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-rw-r--r--src/mame/drivers/samcoupe.cpp1103
1 files changed, 732 insertions, 371 deletions
diff --git a/src/mame/drivers/samcoupe.cpp b/src/mame/drivers/samcoupe.cpp
index 0ae77615a6c..c4a2b89905b 100644
--- a/src/mame/drivers/samcoupe.cpp
+++ b/src/mame/drivers/samcoupe.cpp
@@ -4,52 +4,509 @@
Miles Gordon Technology SAM Coupe
- Notes:
- ------
+ Note:
+ - Early ROMs are buggy. Version 1.0 requires the command CALL 229385
+ (256k machine) or CALL 491529 (512k machine) to execute the bootstrap.
- Beware - the early ROMs are very buggy, and tend to go mad once BASIC
- starts paging. ROM 10 (version 1.0) requires the CALL after F9 or BOOT
- because the ROM loads the bootstrap but fails to execute it. The address
- depends on the RAM size:
+ TODO:
+ - Better timing, emulate memory contention
- On a 256K SAM: CALL 229385
- Or on a 512K (or larger) machine: CALL 491529
-
-
- Todo:
- -----
-
- - Attribute read
- - Better timing
- - Harddisk interfaces
+ Hardware:
+ - Z80 at 6 MHz
+ - Custom ASIC handling the system and video
+ - SAA1099 sound
+ - XTAL X1: 24 MHz (system clock)
+ - XTAL X2: 4.433619 MHz (RGB encoder)
***************************************************************************/
-/* core includes */
#include "emu.h"
-#include "includes/samcoupe.h"
-
#include "cpu/z80/z80.h"
+#include "machine/bankdev.h"
+#include "machine/ram.h"
#include "sound/saa1099.h"
-
+#include "sound/spkrdev.h"
+#include "imagedev/cassette.h"
+#include "bus/samcoupe/drive/drive.h"
+#include "bus/samcoupe/expansion/expansion.h"
+#include "bus/samcoupe/mouse/mouseport.h"
+#include "formats/tzx_cas.h"
+#include "emupal.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.h"
-#include "formats/tzx_cas.h"
-#include "formats/coupedsk.h"
-/***************************************************************************
- CONSTANTS
-***************************************************************************/
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+#define SAM_ENABLE_JOYSTICK (0)
+
+#define SAM_BLOCK 8
+
+#define SAM_TOTAL_WIDTH SAM_BLOCK*96
+#define SAM_TOTAL_HEIGHT 312
+#define SAM_SCREEN_WIDTH SAM_BLOCK*64
+#define SAM_SCREEN_HEIGHT 192
+#define SAM_BORDER_LEFT SAM_BLOCK*4
+#define SAM_BORDER_RIGHT SAM_BLOCK*4
+#define SAM_BORDER_TOP 37
+#define SAM_BORDER_BOTTOM 46
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class samcoupe_state : public driver_device
+{
+public:
+ samcoupe_state(const machine_config &mconfig, device_type type, const char *tag) :
+ driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_mem(*this, "mem"),
+ m_io(*this, "io"),
+ m_ram(*this, RAM_TAG),
+ m_bios(*this, "maincpu"),
+ m_screen(*this, "screen"),
+ m_speaker(*this, "speaker"),
+ m_cassette(*this, "cassette"),
+ m_mouse(*this, "mouseport"),
+ m_keyboard(*this, "kbd_%u", 0U),
+#if SAM_ENABLE_JOYSTICK
+ m_joystick(*this, "joy_%u", 0U)
+#endif
+ m_drive(*this, "drive%u", 1),
+ m_expansion(*this, "exp")
+ {
+ }
-#define SAMCOUPE_XTAL_X1 24_MHz_XTAL
-#define SAMCOUPE_XTAL_X2 4.433619_MHz_XTAL
+ void samcoupe(machine_config &config);
+
+protected:
+ virtual void machine_start() override;
+ virtual void machine_reset() override;
+ virtual void video_start() override;
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
+
+private:
+ required_device<cpu_device> m_maincpu;
+ required_device<address_map_bank_device> m_mem;
+ required_device<address_map_bank_device> m_io;
+ required_device<ram_device> m_ram;
+ required_memory_region m_bios;
+ required_device<screen_device> m_screen;
+ required_device<speaker_sound_device> m_speaker;
+ required_device<cassette_image_device> m_cassette;
+ required_device<samcoupe_mouse_port_device> m_mouse;
+ required_ioport_array<9> m_keyboard;
+#if SAM_ENABLE_JOYSTICK
+ required_ioport_array<2> m_joystick;
+#endif
+ required_device_array<samcoupe_drive_port_device, 2> m_drive;
+ required_device<samcoupe_expansion_device> m_expansion;
+
+ enum
+ {
+ TIMER_IRQ_OFF,
+ TIMER_VIDEO_UPDATE
+ };
+ enum
+ {
+ INT_LINE = 0x01,
+ INT_MOUSE = 0x02,
+ INT_MIDIIN = 0x04,
+ INT_FRAME = 0x08,
+ INT_MIDIOUT = 0x10
+ };
-/***************************************************************************
- TIMERS
-***************************************************************************/
+ // video
+ uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+
+ bitmap_ind16 m_bitmap;
+
+ emu_timer *m_video_update_timer;
+
+ uint8_t m_lmpr, m_hmpr, m_vmpr; /* memory pages */
+ uint8_t m_border; /* border */
+ uint8_t m_clut[16]; /* color lookup table, 16 entries */
+ uint8_t m_line_int; /* line interrupt */
+ uint8_t m_status; /* status register */
+
+ /* attribute */
+ uint8_t m_attribute;
+
+ uint8_t *m_videoram;
+
+ uint8_t pen_r(offs_t offset);
+ void clut_w(offs_t offset, uint8_t data);
+ uint8_t status_r(offs_t offset);
+ void line_int_w(uint8_t data);
+ uint8_t lmpr_r();
+ void lmpr_w(uint8_t data);
+ uint8_t hmpr_r();
+ void hmpr_w(uint8_t data);
+ uint8_t vmpr_r();
+ void vmpr_w(uint8_t data);
+ uint8_t midi_r();
+ void midi_w(uint8_t data);
+ uint8_t keyboard_r(offs_t offset);
+ void border_w(uint8_t data);
+ uint8_t attributes_r();
+
+ void samcoupe_palette(palette_device &palette) const;
+ INTERRUPT_GEN_MEMBER(samcoupe_frame_interrupt);
+ TIMER_CALLBACK_MEMBER(irq_off);
+ TIMER_CALLBACK_MEMBER(sam_video_update_callback);
+
+ void draw_mode4_line(int y, int hpos);
+ void draw_mode3_line(int y, int hpos);
+ void draw_mode12_block(bitmap_ind16 &bitmap, int vpos, int hpos, uint8_t mask);
+ void draw_mode2_line(int y, int hpos);
+ void draw_mode1_line(int y, int hpos);
+
+ void samcoupe_irq(uint8_t src);
+
+ // memory
+ uint8_t mem_r(offs_t offset);
+ void mem_w(offs_t offset, uint8_t data);
+ uint8_t io_r(offs_t offset);
+ void io_w(offs_t offset, uint8_t data);
+
+ uint8_t mem_page_r(int page, offs_t offset);
+ void mem_page_w(int page, offs_t offset, uint8_t data);
+
+ uint8_t mem_block_a_r(offs_t offset);
+ void mem_block_a_w(offs_t offset, uint8_t data);
+ uint8_t mem_block_b_r(offs_t offset);
+ void mem_block_b_w(offs_t offset, uint8_t data);
+ uint8_t mem_block_c_r(offs_t offset);
+ void mem_block_c_w(offs_t offset, uint8_t data);
+ uint8_t mem_block_d_r(offs_t offset);
+ void mem_block_d_w(offs_t offset, uint8_t data);
+
+ void mem_map_base(address_map &map);
+ void mem_map(address_map &map);
+ void io_map_base(address_map &map);
+ void io_map(address_map &map);
+
+ int m_pages; // total internal memory pages (16 or 32)
+};
+
+
+//**************************************************************************
+// ADDRESS MAPS
+//**************************************************************************
+
+void samcoupe_state::mem_map_base(address_map &map)
+{
+ map(0x0000, 0xffff).rw(FUNC(samcoupe_state::mem_r), FUNC(samcoupe_state::mem_w));
+}
+
+void samcoupe_state::mem_map(address_map &map)
+{
+ map(0x0000, 0x3fff).ram().rw(FUNC(samcoupe_state::mem_block_a_r), FUNC(samcoupe_state::mem_block_a_w));
+ map(0x4000, 0x7fff).ram().rw(FUNC(samcoupe_state::mem_block_b_r), FUNC(samcoupe_state::mem_block_b_w));
+ map(0x8000, 0xbfff).ram().rw(FUNC(samcoupe_state::mem_block_c_r), FUNC(samcoupe_state::mem_block_c_w));
+ map(0xc000, 0xffff).ram().rw(FUNC(samcoupe_state::mem_block_d_r), FUNC(samcoupe_state::mem_block_d_w));
+}
+
+void samcoupe_state::io_map_base(address_map &map)
+{
+ map(0x0000, 0xffff).rw(FUNC(samcoupe_state::io_r), FUNC(samcoupe_state::io_w));
+}
+
+void samcoupe_state::io_map(address_map &map)
+{
+ map.unmap_value_high();
+ map(0x00e0, 0x00e7).mirror(0xff00).rw(m_drive[0], FUNC(samcoupe_drive_port_device::read), FUNC(samcoupe_drive_port_device::write));
+ map(0x00e8, 0x00ef).mirror(0xff00).noprw(); // "print" - handled by expansion devices
+ map(0x00f0, 0x00f7).mirror(0xff00).rw(m_drive[1], FUNC(samcoupe_drive_port_device::read), FUNC(samcoupe_drive_port_device::write));
+ map(0x00f8, 0x00f8).select(0xff00).rw(FUNC(samcoupe_state::pen_r), FUNC(samcoupe_state::clut_w));
+ map(0x00f9, 0x00f9).select(0xff00).rw(FUNC(samcoupe_state::status_r), FUNC(samcoupe_state::line_int_w));
+ map(0x00fa, 0x00fa).select(0xff00).rw(FUNC(samcoupe_state::lmpr_r), FUNC(samcoupe_state::lmpr_w));
+ map(0x00fb, 0x00fb).select(0xff00).rw(FUNC(samcoupe_state::hmpr_r), FUNC(samcoupe_state::hmpr_w));
+ map(0x00fc, 0x00fc).select(0xff00).rw(FUNC(samcoupe_state::vmpr_r), FUNC(samcoupe_state::vmpr_w));
+ map(0x00fd, 0x00fd).select(0xff00).rw(FUNC(samcoupe_state::midi_r), FUNC(samcoupe_state::midi_w));
+ map(0x00fe, 0x00fe).select(0xff00).rw(FUNC(samcoupe_state::keyboard_r), FUNC(samcoupe_state::border_w));
+ map(0x00ff, 0x00ff).select(0xff00).r(FUNC(samcoupe_state::attributes_r));
+ map(0x00ff, 0x00ff).mirror(0xfe00).w("saa1099", FUNC(saa1099_device::data_w));
+ map(0x01ff, 0x01ff).mirror(0xfe00).w("saa1099", FUNC(saa1099_device::control_w));
+}
+
+
+//**************************************************************************
+// INPUT PORT DEFINITIONS
+//**************************************************************************
+
+static INPUT_PORTS_START( samcoupe )
+ PORT_START("kbd_0")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR('?')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(F1))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(F2))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(F3))
+
+ PORT_START("kbd_1")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR('{')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR('}')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(F4))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(F5))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(F6))
+
+ PORT_START("kbd_2")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR('<')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR('>')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('[')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(']')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(F7))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(F8))
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(F9))
+
+ PORT_START("kbd_3")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
+
+ PORT_START("kbd_4")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('~')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('/')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('+') PORT_CHAR('*')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DELETE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+
+ PORT_START("kbd_5")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('=') PORT_CHAR('_')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('"') PORT_CHAR(0xA9)
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(F10))
+
+ PORT_START("kbd_6")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR(0xA3)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR('^')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EDIT") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(INSERT))
+
+ PORT_START("kbd_7")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SYMBOL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("INV") PORT_CODE(KEYCODE_SLASH) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_CHAR('\\')
+
+ PORT_START("kbd_8")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+
+#if SAM_ENABLE_JOYSTICK
+ /* Sam Coupe has single 9-pin ATARI-compatible connector but supports 2 joysticks via a splitter,
+ this works by using a different ground for each stick (pin 8: stick 1 gnd, pin 9: stick 2 gnd.)
+ Joysticks overlay number keys 6-0 for the stick 1 and 1-5 for stick 2 (same scheme as ZX Spectrum) */
+
+ PORT_START("joy_0")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY PORT_PLAYER(1)
+
+ PORT_START("joy_1")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2)
+#endif
+INPUT_PORTS_END
+
+
+//**************************************************************************
+// VIDEO EMULATION
+//**************************************************************************
+
+void samcoupe_state::samcoupe_palette(palette_device &palette) const
+{
+ for (int i = 0; i < 128; i++)
+ {
+ uint8_t const b = bitswap<3>(i, 4, 0, 3); // blue: bits 403
+ uint8_t const r = bitswap<3>(i, 5, 1, 3); // red: bits 513
+ uint8_t const g = bitswap<3>(i, 6, 2, 3); // green: bits 623
+
+ palette.set_pen_color(i, pal3bit(r), pal3bit(g), pal3bit(b));
+ }
+}
+
+void samcoupe_state::video_start()
+{
+ m_screen->register_screen_bitmap(m_bitmap);
+}
+
+uint32_t samcoupe_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
+ return 0;
+}
+
+void samcoupe_state::draw_mode4_line(int y, int hpos)
+{
+ /* get start address */
+ uint8_t *vram = m_videoram + ((y - SAM_BORDER_TOP) * 128) + ((hpos - SAM_BORDER_LEFT) / 4);
+
+ for (int i = 0; i < (SAM_BLOCK*2)/4; i++)
+ {
+ /* draw 2 pixels (doublewidth) */
+ m_bitmap.pix16(y, hpos + i * 4 + 0) = m_clut[(*vram >> 4) & 0x0f];
+ m_bitmap.pix16(y, hpos + i * 4 + 1) = m_clut[(*vram >> 4) & 0x0f];
+ m_bitmap.pix16(y, hpos + i * 4 + 2) = m_clut[(*vram >> 0) & 0x0f];
+ m_bitmap.pix16(y, hpos + i * 4 + 3) = m_clut[(*vram >> 0) & 0x0f];
+
+ /* move to next address */
+ vram++;
+
+ /* attribute register contains the third displayed byte */
+ if (i == 2)
+ m_attribute = *vram;
+ }
+}
+
+void samcoupe_state::draw_mode3_line(int y, int hpos)
+{
+ /* get start address */
+ uint8_t *vram = m_videoram + ((y - SAM_BORDER_TOP) * 128) + ((hpos - SAM_BORDER_LEFT) / 4);
+
+ for (int i = 0; i < (SAM_BLOCK*2)/4; i++)
+ {
+ /* draw 4 pixels */
+ m_bitmap.pix16(y, hpos + i * 4 + 0) = m_clut[(*vram >> 6) & 0x03];
+ m_bitmap.pix16(y, hpos + i * 4 + 1) = m_clut[(*vram >> 4) & 0x03];
+ m_bitmap.pix16(y, hpos + i * 4 + 2) = m_clut[(*vram >> 2) & 0x03];
+ m_bitmap.pix16(y, hpos + i * 4 + 3) = m_clut[(*vram >> 0) & 0x03];
+
+ /* move to next address */
+ vram++;
+
+ /* attribute register contains the third displayed byte */
+ if (i == 2)
+ m_attribute = *vram;
+ }
+}
+
+void samcoupe_state::draw_mode12_block(bitmap_ind16 &bitmap, int vpos, int hpos, uint8_t mask)
+{
+ /* extract colors from attribute */
+ uint8_t ink = m_clut[(m_attribute >> 3) & 0x0f];
+ uint8_t pap = m_clut[((m_attribute >> 3) & 0x08) | (m_attribute & 0x07)];
+
+ /* draw block of 8 pixels (doubled to 16) */
+ for (int i = 0; i < SAM_BLOCK; i++)
+ {
+ bitmap.pix16(vpos, hpos + i*2 + 0) = BIT(mask, 7 - i) ? ink : pap;
+ bitmap.pix16(vpos, hpos + i*2 + 1) = BIT(mask, 7 - i) ? ink : pap;
+ }
+}
+
+void samcoupe_state::draw_mode2_line(int y, int hpos)
+{
+ int cell = (y - SAM_BORDER_TOP) * 32 + (hpos - SAM_BORDER_LEFT) / SAM_BLOCK / 2;
+
+ uint8_t mask = m_videoram[cell];
+ m_attribute = m_videoram[cell + 0x2000];
+
+ draw_mode12_block(m_bitmap, y, hpos, mask);
+}
+
+void samcoupe_state::draw_mode1_line(int y, int hpos)
+{
+ uint8_t mask = m_videoram[((((y - SAM_BORDER_TOP) & 0xc0) << 5) | (((y - SAM_BORDER_TOP) & 0x07) << 8) | (((y - SAM_BORDER_TOP) & 0x38) << 2)) + (hpos - SAM_BORDER_LEFT) / SAM_BLOCK / 2];
+ m_attribute = m_videoram[32*192 + (((y - SAM_BORDER_TOP) & 0xf8) << 2) + (hpos - SAM_BORDER_LEFT) / SAM_BLOCK / 2];
+
+ draw_mode12_block(m_bitmap, y, hpos, mask);
+}
+
+TIMER_CALLBACK_MEMBER(samcoupe_state::sam_video_update_callback)
+{
+ int vpos = m_screen->vpos();
+ int hpos = m_screen->hpos();
+
+ int next_vpos = vpos;
+ int next_hpos = hpos + SAM_BLOCK*2;
+
+ /* next scanline? */
+ if (next_hpos >= SAM_BORDER_LEFT + SAM_SCREEN_WIDTH + SAM_BORDER_RIGHT)
+ {
+ next_vpos = (vpos + 1) % (SAM_BORDER_TOP + SAM_SCREEN_HEIGHT + SAM_BORDER_BOTTOM);
+ next_hpos = 0;
+ }
+
+ /* display disabled? (only in mode 3 or 4) */
+ if (BIT(m_vmpr, 6) && BIT(m_border, 7))
+ {
+ m_bitmap.plot_box(hpos, vpos, SAM_BLOCK*2, 1, 0);
+ }
+ else
+ {
+ /* border area? */
+ if (vpos < SAM_BORDER_TOP || vpos >= SAM_BORDER_TOP + SAM_SCREEN_HEIGHT || hpos < SAM_BORDER_LEFT || hpos >= SAM_BORDER_LEFT + SAM_SCREEN_WIDTH)
+ {
+ m_attribute = 0xff;
+ m_bitmap.plot_box(hpos, vpos, SAM_BLOCK*2, 1, m_clut[(m_border & 0x20) >> 2 | (m_border & 0x07)]);
+ }
+ else
+ {
+ /* main screen area */
+ switch ((m_vmpr & 0x60) >> 5)
+ {
+ case 0: draw_mode1_line(vpos, hpos); break;
+ case 1: draw_mode2_line(vpos, hpos); break;
+ case 2: draw_mode3_line(vpos, hpos); break;
+ case 3: draw_mode4_line(vpos, hpos); break;
+ }
+ }
+ }
+
+ /* do we need to trigger the scanline interrupt (interrupt happens at the start of the right border before the specified line)? */
+ if (m_line_int < SAM_SCREEN_HEIGHT && hpos == SAM_BORDER_LEFT + SAM_SCREEN_WIDTH && vpos == (m_line_int + SAM_BORDER_TOP - 1))
+ samcoupe_irq(INT_LINE);
+
+ /* schedule next update */
+ m_video_update_timer->adjust(m_screen->time_until_pos(next_vpos, next_hpos));
+}
+
+
+//**************************************************************************
+// MACHINE EMULATION
+//**************************************************************************
void samcoupe_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
@@ -58,9 +515,6 @@ void samcoupe_state::device_timer(emu_timer &timer, device_timer_id id, int para
case TIMER_IRQ_OFF:
irq_off(ptr, param);
break;
- case TIMER_MOUSE_RESET:
- samcoupe_mouse_reset(ptr, param);
- break;
case TIMER_VIDEO_UPDATE:
sam_video_update_callback(ptr, param);
break;
@@ -69,47 +523,69 @@ void samcoupe_state::device_timer(emu_timer &timer, device_timer_id id, int para
}
}
-/***************************************************************************
- I/O PORTS
-***************************************************************************/
+TIMER_CALLBACK_MEMBER(samcoupe_state::irq_off)
+{
+ /* adjust STATUS register */
+ m_status |= param;
-uint8_t samcoupe_state::samcoupe_disk_r(offs_t offset)
+ /* clear interrupt */
+ if ((m_status & 0x1f) == 0x1f)
+ m_maincpu->set_input_line(0, CLEAR_LINE);
+}
+
+void samcoupe_state::samcoupe_irq(uint8_t src)
{
- /* drive and side is encoded into bit 5 and 3 */
- floppy_connector *con = (BIT(offset, 4) ? m_wd1772_1 : m_wd1772_0);
- floppy_image_device *floppy = con ? con->get_device() : nullptr;
+ /* assert irq and a timer to set it off again */
+ m_maincpu->set_input_line(0, ASSERT_LINE);
+ timer_set(attotime::from_usec(20), TIMER_IRQ_OFF, src);
- if(floppy)
- floppy->ss_w(BIT(offset, 2));
- m_fdc->set_floppy(floppy);
+ /* adjust STATUS register */
+ m_status &= ~src;
+}
- /* bit 1 and 2 select the controller register */
- return m_fdc->read(offset & 0x03);
+INTERRUPT_GEN_MEMBER(samcoupe_state::samcoupe_frame_interrupt)
+{
+ /* signal frame interrupt */
+ samcoupe_irq(INT_FRAME);
}
-void samcoupe_state::samcoupe_disk_w(offs_t offset, uint8_t data)
+void samcoupe_state::machine_start()
{
- /* drive and side is encoded into bit 5 and 3 */
- floppy_connector *con = (BIT(offset, 4) ? m_wd1772_1 : m_wd1772_0);
- floppy_image_device *floppy = con ? con->get_device() : nullptr;
+ // make sure the ram device is already running
+ if (!m_ram->started())
+ throw device_missing_dependencies();
- if(floppy)
- floppy->ss_w(BIT(offset, 2));
- m_fdc->set_floppy(floppy);
+ m_pages = m_ram->size() / 0x4000; // 16 or 32
- /* bit 1 and 2 select the controller register */
- return m_fdc->write(offset & 0x03, data);
+ /* schedule our video updates */
+ m_video_update_timer = timer_alloc(TIMER_VIDEO_UPDATE);
+ m_video_update_timer->adjust(m_screen->time_until_pos(0, 0));
}
-uint8_t samcoupe_state::samcoupe_pen_r(offs_t offset)
+void samcoupe_state::machine_reset()
+{
+ m_lmpr = 0x0f; // ROM0 paged in, ROM1 paged out, RAM Banks
+ m_hmpr = 0x01;
+ vmpr_w(0x81);
+ m_line_int = 0xff; // line interrupts disabled
+ m_status = 0x1f; // no interrupts active
+}
+
+
+//**************************************************************************
+// ASIC
+//**************************************************************************
+
+uint8_t samcoupe_state::pen_r(offs_t offset)
{
uint8_t data;
if (offset & 0x100)
{
+ // HPEN
int vpos = m_screen->vpos();
- /* return the current screen line or 192 for the border area */
+ // return the current screen line or 192 for the border area
if (vpos < SAM_BORDER_TOP || vpos >= SAM_BORDER_TOP + SAM_SCREEN_HEIGHT)
data = 192;
else
@@ -117,445 +593,325 @@ uint8_t samcoupe_state::samcoupe_pen_r(offs_t offset)
}
else
{
- /* horizontal position is encoded into bits 3 to 8 */
- data = m_screen->hpos() & 0xfc;
+ // LPEN
+
+ // 765432-- screen horizontal position
+ // ------1- midi status (currently transferring)
+ // -------0 border clut bit 0
+
+ data = (m_screen->hpos() & 0xfc) | (0 << 1) | (m_border & 1);
}
return data;
}
-void samcoupe_state::samcoupe_clut_w(offs_t offset, uint8_t data)
+void samcoupe_state::clut_w(offs_t offset, uint8_t data)
{
m_clut[(offset >> 8) & 0x0f] = data & 0x7f;
}
-uint8_t samcoupe_state::samcoupe_status_r(offs_t offset)
+uint8_t samcoupe_state::status_r(offs_t offset)
{
+ // 765----- keyboard matrix k8 to k6
+ // ---4---- midi out interrupt
+ // ----3--- frame interrupt
+ // -----2-- midi in interrupt
+ // ------1- mouse interrupt
+ // -------0 line interrupt
+
uint8_t data = 0xe0;
- /* bit 5-7, keyboard input */
- if (!BIT(offset, 8)) data &= m_keyboard_row_fe->read() & 0xe0;
- if (!BIT(offset, 9)) data &= m_keyboard_row_fd->read() & 0xe0;
- if (!BIT(offset, 10)) data &= m_keyboard_row_fb->read() & 0xe0;
- if (!BIT(offset, 11)) data &= m_keyboard_row_f7->read() & 0xe0;
- if (!BIT(offset, 12)) data &= m_keyboard_row_ef->read() & 0xe0;
- if (!BIT(offset, 13)) data &= m_keyboard_row_df->read() & 0xe0;
- if (!BIT(offset, 14)) data &= m_keyboard_row_bf->read() & 0xe0;
- if (!BIT(offset, 15)) data &= m_keyboard_row_7f->read() & 0xe0;
-
- /* bit 0-4, interrupt source */
+ for (int i = 0; i < 8; i++)
+ if (BIT(offset, i + 8) == 0)
+ data &= m_keyboard[i]->read() & 0xe0;
+
data |= m_status;
return data;
}
-void samcoupe_state::samcoupe_line_int_w(uint8_t data)
+void samcoupe_state::line_int_w(uint8_t data)
{
m_line_int = data;
}
-uint8_t samcoupe_state::samcoupe_lmpr_r()
+uint8_t samcoupe_state::lmpr_r()
{
return m_lmpr;
}
-void samcoupe_state::samcoupe_lmpr_w(uint8_t data)
+void samcoupe_state::lmpr_w(uint8_t data)
{
- address_space &space_program = m_maincpu->space(AS_PROGRAM);
-
m_lmpr = data;
- samcoupe_update_memory(space_program);
}
-uint8_t samcoupe_state::samcoupe_hmpr_r()
+uint8_t samcoupe_state::hmpr_r()
{
return m_hmpr;
}
-void samcoupe_state::samcoupe_hmpr_w(uint8_t data)
+void samcoupe_state::hmpr_w(uint8_t data)
{
- address_space &space_program = m_maincpu->space(AS_PROGRAM);
-
m_hmpr = data;
- samcoupe_update_memory(space_program);
}
-uint8_t samcoupe_state::samcoupe_vmpr_r()
+uint8_t samcoupe_state::vmpr_r()
{
return m_vmpr;
}
-void samcoupe_state::samcoupe_vmpr_w(uint8_t data)
+void samcoupe_state::vmpr_w(uint8_t data)
{
- address_space &space_program = m_maincpu->space(AS_PROGRAM);
-
m_vmpr = data;
- samcoupe_update_memory(space_program);
+
+ if (BIT(m_vmpr, 6)) /* if bit set in 2 bank screen mode */
+ m_videoram = &m_ram->pointer()[(m_vmpr & 0x1e) << 14];
+ else
+ m_videoram = &m_ram->pointer()[(m_vmpr & 0x1f) << 14];
}
-uint8_t samcoupe_state::samcoupe_midi_r()
+uint8_t samcoupe_state::midi_r()
{
- logerror("%s: read from midi port\n", machine().describe_context());
+ logerror("Read from MIDI port\n");
return 0xff;
}
-void samcoupe_state::samcoupe_midi_w(uint8_t data)
+void samcoupe_state::midi_w(uint8_t data)
{
- logerror("%s: write to midi port: 0x%02x\n", machine().describe_context(), data);
+ logerror("Write to MIDI port: 0x%02x\n", data);
}
-uint8_t samcoupe_state::samcoupe_keyboard_r(offs_t offset)
+uint8_t samcoupe_state::keyboard_r(offs_t offset)
{
+ // 7------- status bit external memory
+ // -6------ cassette input
+ // --5----- light pen input
+ // ---43210 keyboard matrix k5 to k1, mouse
+
uint8_t data = 0x1f;
- /* bit 0-4, keyboard input */
- if (!BIT(offset, 8)) data &= m_keyboard_row_fe->read() & 0x1f;
- if (!BIT(offset, 9)) data &= m_keyboard_row_fd->read() & 0x1f;
- if (!BIT(offset, 10)) data &= m_keyboard_row_fb->read() & 0x1f;
- if (!BIT(offset, 11)) data &= m_keyboard_row_f7->read() & 0x1f;
- if (!BIT(offset, 12)) data &= m_keyboard_row_ef->read() & 0x1f;
- if (!BIT(offset, 13)) data &= m_keyboard_row_df->read() & 0x1f;
- if (!BIT(offset, 14)) data &= m_keyboard_row_bf->read() & 0x1f;
- if (!BIT(offset, 15)) data &= m_keyboard_row_7f->read() & 0x1f;
+ for (int i = 0; i < 8; i++)
+ if (BIT(offset, i + 8) == 0)
+ data &= m_keyboard[i]->read() & 0x1f;
+
+#if SAM_ENABLE_JOYSTICK
+ if (BIT(offset, 12) == 0) data &= m_joystick[0]->read() & 0x1f;
+ if (BIT(offset, 11) == 0) data &= m_joystick[1]->read() & 0x1f;
+#endif
if (offset == 0xff00)
{
- data &= m_keyboard_row_ff->read() & 0x1f;
-
- /* if no key has been pressed, return the mouse state */
- if (data == 0x1f)
- data = samcoupe_mouse_r();
+ data &= m_keyboard[8]->read() & 0x1f;
+ data &= m_mouse->read() & 0x1f;
}
- /* bit 5, lightpen strobe */
data |= 1 << 5;
-
- /* bit 6, cassette input */
data |= (m_cassette->input() > 0 ? 1 : 0) << 6;
-
- /* bit 7, external memory */
data |= 1 << 7;
- /* joysticks */
- if (!BIT(offset, 12)) data &= m_joy1->read() | (0xff ^ 0x1f);
- if (!BIT(offset, 11)) data &= m_joy2->read() | (0xff ^ 0x1f);
-
return data;
}
-void samcoupe_state::samcoupe_border_w(uint8_t data)
+void samcoupe_state::border_w(uint8_t data)
{
- m_border = data;
+ // 7------- screen off in mode 3/4
+ // -6------ midi through
+ // --5--210 clut address for border color
+ // ---4---- beeper
+ // ----3--- cassette output
- /* bit 3, cassette output */
- m_cassette->output( BIT(data, 3) ? -1.0 : +1.0);
+ m_border = data;
- /* bit 4, beep */
+ m_cassette->output(BIT(data, 3) ? -1.0 : +1.0);
m_speaker->level_w(BIT(data, 4));
}
-uint8_t samcoupe_state::samcoupe_attributes_r()
+uint8_t samcoupe_state::attributes_r()
{
return m_attribute;
}
-WRITE_LINE_MEMBER(samcoupe_state::write_lpt1_busy)
-{
- m_lpt1_busy = state;
-}
-uint8_t samcoupe_state::samcoupe_lpt1_busy_r()
-{
- return m_lpt1_busy;
-}
+//**************************************************************************
+// MEMORY
+//**************************************************************************
-void samcoupe_state::samcoupe_lpt1_strobe_w(uint8_t data)
-{
- m_lpt1->write_strobe(data & 1);
-}
+//-------------------------------------------------
+// mem_r/w - program space accesses
+//-------------------------------------------------
-DECLARE_WRITE_LINE_MEMBER(samcoupe_state::write_lpt2_busy)
+uint8_t samcoupe_state::mem_r(offs_t offset)
{
- m_lpt2_busy = state;
-}
+ uint8_t data = 0xff;
-uint8_t samcoupe_state::samcoupe_lpt2_busy_r()
-{
- return m_lpt2_busy;
-}
+ int xmem = BIT(m_hmpr, 7) && BIT(offset, 15) ? 1 : 0;
-void samcoupe_state::samcoupe_lpt2_strobe_w(uint8_t data)
-{
- m_lpt2->write_strobe(data & 1);
-}
+ m_expansion->xmem_w(xmem);
-/***************************************************************************
- ADDRESS MAPS
-***************************************************************************/
+ data &= m_expansion->mreq_r(offset);
-void samcoupe_state::samcoupe_mem(address_map &map)
-{
- map(0x0000, 0x3fff).ram().rw(FUNC(samcoupe_state::sam_bank1_r), FUNC(samcoupe_state::sam_bank1_w)); // .bankrw("bank1");
- map(0x4000, 0x7fff).ram().rw(FUNC(samcoupe_state::sam_bank2_r), FUNC(samcoupe_state::sam_bank2_w)); // .bankrw("bank2");
- map(0x8000, 0xbfff).ram().rw(FUNC(samcoupe_state::sam_bank3_r), FUNC(samcoupe_state::sam_bank3_w)); // .bankrw("bank3");
- map(0xc000, 0xffff).ram().rw(FUNC(samcoupe_state::sam_bank4_r), FUNC(samcoupe_state::sam_bank4_w)); // .bankrw("bank4");
-}
+ if (xmem == 0)
+ data &= m_mem->read8(offset);
-void samcoupe_state::samcoupe_io(address_map &map)
-{
- map(0x0080, 0x0081).select(0xff00).w(FUNC(samcoupe_state::samcoupe_ext_mem_w));
- map(0x00e0, 0x00e7).select(0xff10).rw(FUNC(samcoupe_state::samcoupe_disk_r), FUNC(samcoupe_state::samcoupe_disk_w));
- map(0x00e8, 0x00e8).select(0xff00).w("lpt1_data_out", FUNC(output_latch_device::write));
- map(0x00e9, 0x00e9).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_lpt1_busy_r), FUNC(samcoupe_state::samcoupe_lpt1_strobe_w));
- map(0x00ea, 0x00ea).select(0xff00).w("lpt2_data_out", FUNC(output_latch_device::write));
- map(0x00eb, 0x00eb).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_lpt2_busy_r), FUNC(samcoupe_state::samcoupe_lpt2_strobe_w));
- map(0x00f8, 0x00f8).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_pen_r), FUNC(samcoupe_state::samcoupe_clut_w));
- map(0x00f9, 0x00f9).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_status_r), FUNC(samcoupe_state::samcoupe_line_int_w));
- map(0x00fa, 0x00fa).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_lmpr_r), FUNC(samcoupe_state::samcoupe_lmpr_w));
- map(0x00fb, 0x00fb).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_hmpr_r), FUNC(samcoupe_state::samcoupe_hmpr_w));
- map(0x00fc, 0x00fc).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_vmpr_r), FUNC(samcoupe_state::samcoupe_vmpr_w));
- map(0x00fd, 0x00fd).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_midi_r), FUNC(samcoupe_state::samcoupe_midi_w));
- map(0x00fe, 0x00fe).select(0xff00).rw(FUNC(samcoupe_state::samcoupe_keyboard_r), FUNC(samcoupe_state::samcoupe_border_w));
- map(0x00ff, 0x00ff).select(0xff00).r(FUNC(samcoupe_state::samcoupe_attributes_r));
- map(0x00ff, 0x00ff).select(0xfe00).w("saa1099", FUNC(saa1099_device::data_w));
- map(0x01ff, 0x01ff).select(0xfe00).w("saa1099", FUNC(saa1099_device::control_w));
+ return data;
}
-
-/***************************************************************************
- INTERRUPTS
-***************************************************************************/
-
-TIMER_CALLBACK_MEMBER(samcoupe_state::irq_off)
+void samcoupe_state::mem_w(offs_t offset, uint8_t data)
{
- /* adjust STATUS register */
- m_status |= param;
+ int xmem = BIT(m_hmpr, 7) && BIT(offset, 15) ? 1 : 0;
- /* clear interrupt */
- if ((m_status & 0x1f) == 0x1f)
- m_maincpu->set_input_line(0, CLEAR_LINE);
+ m_expansion->xmem_w(xmem);
-}
-
-void samcoupe_state::samcoupe_irq(uint8_t src)
-{
- /* assert irq and a timer to set it off again */
- m_maincpu->set_input_line(0, ASSERT_LINE);
- timer_set(attotime::from_usec(20), TIMER_IRQ_OFF, src);
+ m_expansion->mreq_w(offset, data);
- /* adjust STATUS register */
- m_status &= ~src;
+ if (xmem == 0)
+ m_mem->write8(offset, data);
}
-INTERRUPT_GEN_MEMBER(samcoupe_state::samcoupe_frame_interrupt)
-{
- /* signal frame interrupt */
- samcoupe_irq(SAM_FRAME_INT);
-}
-
-
-/***************************************************************************
- INPUT PORTS
-***************************************************************************/
-
-static INPUT_PORTS_START( samcoupe )
- PORT_START("keyboard_row_fe")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR('?')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(F1))
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(F2))
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(F3))
-
- PORT_START("keyboard_row_fd")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR('{')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR('}')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(F4))
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(F5))
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(F6))
-
- PORT_START("keyboard_row_fb")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR('<')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR('>')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('[')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(']')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(F7))
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(F8))
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(F9))
-
- PORT_START("keyboard_row_f7")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR(UCHAR_MAMEKEY(ESC))
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
-
- PORT_START("keyboard_row_ef")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('~')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('/')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('+') PORT_CHAR('*')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DELETE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+//-------------------------------------------------
+// io_r/w - i/o space accesses
+//-------------------------------------------------
- PORT_START("keyboard_row_df")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('=') PORT_CHAR('_')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('"') PORT_CHAR(0xA9)
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(F10))
+uint8_t samcoupe_state::io_r(offs_t offset)
+{
+ uint8_t data = 0xff;
- PORT_START("keyboard_row_bf")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR(0xA3)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR('^')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EDIT") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(INSERT))
+ m_expansion->print_w((offset & 0xf8) == 0xe8); // 0xe8 to 0xef
- PORT_START("keyboard_row_7f")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SYMBOL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("INV") PORT_CODE(KEYCODE_SLASH) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_CHAR('\\')
+ data &= m_expansion->iorq_r(offset);
+ data &= m_io->read8(offset);
- PORT_START("keyboard_row_ff")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT))
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ return data;
+}
- PORT_START("mouse_buttons")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_CODE(MOUSECODE_BUTTON1) PORT_NAME("Mouse Button 1")
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_CODE(MOUSECODE_BUTTON3) PORT_NAME("Mouse Button 3")
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_CODE(MOUSECODE_BUTTON2) PORT_NAME("Mouse Button 2")
- PORT_BIT(0xf8, IP_ACTIVE_LOW, IPT_UNUSED)
+void samcoupe_state::io_w(offs_t offset, uint8_t data)
+{
+ m_expansion->print_w((offset & 0xf8) == 0xe8);
- PORT_START("mouse_x")
- PORT_BIT(0xfff, 0x000, IPT_MOUSE_X) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_REVERSE
+ m_expansion->iorq_w(offset, data);
+ m_io->write8(offset, data);
+}
- PORT_START("mouse_y")
- PORT_BIT(0xfff, 0x000, IPT_MOUSE_Y) PORT_SENSITIVITY(50) PORT_KEYDELTA(0)
+//-------------------------------------------------
+// mem_page_r/w - read/write memory pages
+//-------------------------------------------------
- PORT_START("config")
- PORT_CONFNAME(0x01, 0x00, "Real Time Clock")
- PORT_CONFSETTING( 0x00, DEF_STR(None))
- PORT_CONFSETTING( 0x01, "SAMBUS")
+uint8_t samcoupe_state::mem_page_r(int page, offs_t offset)
+{
+ if (page < m_pages)
+ return m_ram->pointer()[(page << 14) | offset];
+ else
+ return 0xff;
+}
- /* Sam Coupe has single 9-pin ATARI-compatible connector but supports 2 joysticks via a splitter,
- this works by using a different ground for each stick (pin 8: stick 1 gnd, pin 9: stick 2 gnd.)
- Joysticks overlay number keys 6-0 for the stick 1 and 1-5 for stick 2 (same scheme as ZX Spectrum) */
+void samcoupe_state::mem_page_w(int page, offs_t offset, uint8_t data)
+{
+ if (page < m_pages)
+ m_ram->pointer()[(page << 14) | offset] = data;
+}
- PORT_START("joy_1")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY PORT_PLAYER(1)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY PORT_PLAYER(1)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY PORT_PLAYER(1)
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY PORT_PLAYER(1)
+//-------------------------------------------------
+// mem_block_a/b/c/d_r/w - read/write memory blocks
+//-------------------------------------------------
- PORT_START("joy_2")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY PORT_PLAYER(2)
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY PORT_PLAYER(2)
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY PORT_PLAYER(2)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY PORT_PLAYER(2)
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2)
-INPUT_PORTS_END
+uint8_t samcoupe_state::mem_block_a_r(offs_t offset)
+{
+ int page = m_lmpr & 0x1f;
+ // ram enabled?
+ if (BIT(m_lmpr, 5))
+ return mem_page_r(page, offset);
+ else
+ return m_bios->base()[offset];
+}
-/***************************************************************************
- PALETTE
-***************************************************************************/
+void samcoupe_state::mem_block_a_w(offs_t offset, uint8_t data)
+{
+ int page = m_lmpr & 0x1f;
-/*
- Decode colours for the palette as follows:
+ // not write protected?
+ if (BIT(m_lmpr, 7) == 0)
+ mem_page_w(page, offset, data);
+}
- bit 7 6 5 4 3 2 1 0
- nothing G+4 R+4 B+4 ALL+1 G+2 R+2 B+2
+uint8_t samcoupe_state::mem_block_b_r(offs_t offset)
+{
+ int page = ((m_lmpr & 0x1f) + 1) & 0x1f;
+ return mem_page_r(page, offset);
+}
-*/
-void samcoupe_state::samcoupe_palette(palette_device &palette) const
+void samcoupe_state::mem_block_b_w(offs_t offset, uint8_t data)
{
- for (int i = 0; i < 128; i++)
- {
- uint8_t const b = bitswap<3>(i, 4, 0, 3);
- uint8_t const r = bitswap<3>(i, 5, 1, 3);
- uint8_t const g = bitswap<3>(i, 6, 2, 3);
+ int page = ((m_lmpr & 0x1f) + 1) & 0x1f;
+ mem_page_w(page, offset, data);
+}
- palette.set_pen_color(i, pal3bit(r), pal3bit(g), pal3bit(b));
- }
+uint8_t samcoupe_state::mem_block_c_r(offs_t offset)
+{
+ int page = m_hmpr & 0x1f;
+ return mem_page_r(page, offset);
}
+void samcoupe_state::mem_block_c_w(offs_t offset, uint8_t data)
+{
+ int page = m_hmpr & 0x1f;
+ mem_page_w(page, offset, data);
+}
-/***************************************************************************
- MACHINE DRIVERS
-***************************************************************************/
+uint8_t samcoupe_state::mem_block_d_r(offs_t offset)
+{
+ int page = ((m_hmpr & 0x1f) + 1) & 0x1f;
-FLOPPY_FORMATS_MEMBER( samcoupe_state::floppy_formats )
- FLOPPY_MGT_FORMAT
-FLOPPY_FORMATS_END
+ // ram enabled?
+ if (BIT(m_lmpr, 6) == 0)
+ return mem_page_r(page, offset);
+ else
+ return m_bios->base()[0x4000 + offset];
+}
-static void samcoupe_floppies(device_slot_interface &device)
+void samcoupe_state::mem_block_d_w(offs_t offset, uint8_t data)
{
- device.option_add("35dd", FLOPPY_35_DD);
+ int page = ((m_hmpr & 0x1f) + 1) & 0x1f;
+ mem_page_w(page, offset, data);
}
+
+//**************************************************************************
+// MACHINE DEFINTIONS
+//**************************************************************************
+
void samcoupe_state::samcoupe(machine_config &config)
{
- /* basic machine hardware */
- Z80(config, m_maincpu, SAMCOUPE_XTAL_X1 / 4); /* 6 MHz */
- m_maincpu->set_addrmap(AS_PROGRAM, &samcoupe_state::samcoupe_mem);
- m_maincpu->set_addrmap(AS_IO, &samcoupe_state::samcoupe_io);
+ Z80(config, m_maincpu, 24_MHz_XTAL / 4); // 6 MHz
+ m_maincpu->set_addrmap(AS_PROGRAM, &samcoupe_state::mem_map_base);
+ m_maincpu->set_addrmap(AS_IO, &samcoupe_state::io_map_base);
m_maincpu->set_vblank_int("screen", FUNC(samcoupe_state::samcoupe_frame_interrupt));
- /* video hardware */
+ ADDRESS_MAP_BANK(config, m_mem);
+ m_mem->set_addrmap(AS_PROGRAM, &samcoupe_state::mem_map);
+ m_mem->set_data_width(8);
+ m_mem->set_addr_width(16);
+
+ ADDRESS_MAP_BANK(config, m_io);
+ m_io->set_addrmap(AS_PROGRAM, &samcoupe_state::io_map);
+ m_io->set_data_width(8);
+ m_io->set_addr_width(16);
+
+ RAM(config, RAM_TAG).set_default_size("512K").set_extra_options("256K");
+
+ // video hardware
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
- m_screen->set_raw(SAMCOUPE_XTAL_X1/2, SAM_TOTAL_WIDTH, 0, SAM_BORDER_LEFT + SAM_SCREEN_WIDTH + SAM_BORDER_RIGHT,
- SAM_TOTAL_HEIGHT, 0, SAM_BORDER_TOP + SAM_SCREEN_HEIGHT + SAM_BORDER_BOTTOM);
+ m_screen->set_raw(24_MHz_XTAL / 2, SAM_TOTAL_WIDTH, 0, SAM_BORDER_LEFT + SAM_SCREEN_WIDTH + SAM_BORDER_RIGHT,
+ SAM_TOTAL_HEIGHT, 0, SAM_BORDER_TOP + SAM_SCREEN_HEIGHT + SAM_BORDER_BOTTOM);
m_screen->set_screen_update(FUNC(samcoupe_state::screen_update));
m_screen->set_palette("palette");
PALETTE(config, "palette", FUNC(samcoupe_state::samcoupe_palette), 128);
- /* devices */
- CENTRONICS(config, m_lpt1, centronics_devices, "printer");
- m_lpt1->busy_handler().set(FUNC(samcoupe_state::write_lpt1_busy));
-
- output_latch_device &lpt1_data_out(OUTPUT_LATCH(config, "lpt1_data_out"));
- m_lpt1->set_output_latch(lpt1_data_out);
-
- CENTRONICS(config, m_lpt2, centronics_devices, "printer");
- m_lpt2->busy_handler().set(FUNC(samcoupe_state::write_lpt2_busy));
-
- output_latch_device &lpt2_data_out(OUTPUT_LATCH(config, "lpt2_data_out"));
- m_lpt2->set_output_latch(lpt2_data_out);
-
- MSM6242(config, m_rtc, 32.768_kHz_XTAL);
-
- /* sound hardware */
+ // sound hardware
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50);
- SAA1099(config, "saa1099", SAMCOUPE_XTAL_X1/3).add_route(ALL_OUTPUTS, "mono", 0.50); /* 8 MHz */
+ SAA1099(config, "saa1099", 24_MHz_XTAL / 3).add_route(ALL_OUTPUTS, "mono", 0.50); // 8 MHz
CASSETTE(config, m_cassette);
m_cassette->set_formats(tzx_cassette_formats);
@@ -564,19 +920,21 @@ void samcoupe_state::samcoupe(machine_config &config)
m_cassette->set_interface("samcoupe_cass");
SOFTWARE_LIST(config, "cass_list").set_original("samcoupe_cass");
- WD1772(config, m_fdc, SAMCOUPE_XTAL_X1/3);
- FLOPPY_CONNECTOR(config, "wd1772:0", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, "wd1772:1", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats).enable_sound(true);
+ // expansion ports
+ SAMCOUPE_MOUSE_PORT(config, m_mouse, samcoupe_mouse_modules);
+
+ SAMCOUPE_DRIVE_PORT(config, m_drive[0], samcoupe_drive_modules, "floppy");
+ SAMCOUPE_DRIVE_PORT(config, m_drive[1], samcoupe_drive_modules, "floppy");
+
SOFTWARE_LIST(config, "flop_list").set_original("samcoupe_flop");
- /* internal ram */
- RAM(config, RAM_TAG).set_default_size("512K").set_extra_options("256K,1280K,1536K,2304K,2560K,3328K,3584K,4352K,4608K");
+ SAMCOUPE_EXPANSION(config, m_expansion, samcoupe_expansion_modules);
}
-/***************************************************************************
- ROM DEFINITIONS
-***************************************************************************/
+//**************************************************************************
+// ROM DEFINTIONS
+//**************************************************************************
/*
The bios is actually 32K. This is the combined version of the two old 16K MESS roms.
@@ -613,8 +971,11 @@ ROM_START( samcoupe )
ROMX_LOAD( "rom04.z5", 0x0000, 0x8000, CRC(f439e84e) SHA1(8bc457a5c764b0bb0aa7008c57f28c30248fc6a4), ROM_BIOS(12) )
ROM_SYSTEM_BIOS( 13, "01", "v0.1" )
ROMX_LOAD( "rom01.z5", 0x0000, 0x8000, CRC(c04acfdf) SHA1(8976ed005c14905eec1215f0a5c28aa686a7dda2), ROM_BIOS(13) )
+ ROM_SYSTEM_BIOS( 14, "atom", "ATOM HDD Interface Auto Boot" )
+ ROMX_LOAD( "atom.z5", 0x0000, 0x8000, CRC(dec75f58) SHA1(cd342579f066c0863e4f769c2e6757085e21b0a1), ROM_BIOS(14) )
ROM_END
+
/***************************************************************************
GAME DRIVERS
***************************************************************************/