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-rw-r--r--src/mame/drivers/samcoupe.cpp621
1 files changed, 621 insertions, 0 deletions
diff --git a/src/mame/drivers/samcoupe.cpp b/src/mame/drivers/samcoupe.cpp
new file mode 100644
index 00000000000..ba3cb454cf6
--- /dev/null
+++ b/src/mame/drivers/samcoupe.cpp
@@ -0,0 +1,621 @@
+// license:GPL-2.0+
+// copyright-holders:Lee Hammerton, Dirk Best
+/***************************************************************************
+
+ Miles Gordon Technology SAM Coupe
+
+ Notes:
+ ------
+
+ 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:
+
+ On a 256K SAM: CALL 229385
+ Or on a 512K (or larger) machine: CALL 491529
+
+
+ Todo:
+ -----
+
+ - Attribute read
+ - Better timing
+ - Harddisk interfaces
+
+***************************************************************************/
+
+/* core includes */
+#include "emu.h"
+#include "includes/samcoupe.h"
+#
+/* components */
+#include "cpu/z80/z80.h"
+#include "sound/saa1099.h"
+
+/* devices */
+#include "formats/tzx_cas.h"
+#include "formats/coupedsk.h"
+#include "softlist.h"
+
+/***************************************************************************
+ CONSTANTS
+***************************************************************************/
+
+#define SAMCOUPE_XTAL_X1 XTAL_24MHz
+#define SAMCOUPE_XTAL_X2 XTAL_4_433619MHz
+
+
+/***************************************************************************
+ TIMERS
+***************************************************************************/
+
+void samcoupe_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
+{
+ switch (id)
+ {
+ 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;
+ default:
+ assert_always(FALSE, "Unknown id in samcoupe_state::device_timer");
+ }
+}
+
+/***************************************************************************
+ I/O PORTS
+***************************************************************************/
+
+READ8_MEMBER(samcoupe_state::samcoupe_disk_r)
+{
+ /* 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() : 0;
+
+ if(floppy)
+ floppy->ss_w(BIT(offset, 2));
+ m_fdc->set_floppy(floppy);
+
+ /* bit 1 and 2 select the controller register */
+ switch (offset & 0x03)
+ {
+ case 0: return m_fdc->status_r();
+ case 1: return m_fdc->track_r();
+ case 2: return m_fdc->sector_r();
+ case 3: return m_fdc->data_r();
+ }
+
+ return 0xff;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_disk_w)
+{
+ /* 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() : 0;
+
+ if(floppy)
+ floppy->ss_w(BIT(offset, 2));
+ m_fdc->set_floppy(floppy);
+
+ /* bit 1 and 2 select the controller register */
+ switch (offset & 0x03)
+ {
+ case 0: m_fdc->cmd_w(data); break;
+ case 1: m_fdc->track_w(data); break;
+ case 2: m_fdc->sector_w(data); break;
+ case 3: m_fdc->data_w(data); break;
+ }
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_pen_r)
+{
+ screen_device *scr = machine().first_screen();
+ UINT8 data;
+
+ if (offset & 0x100)
+ {
+ int vpos = scr->vpos();
+
+ /* 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
+ data = vpos - SAM_BORDER_TOP;
+ }
+ else
+ {
+ /* horizontal position is encoded into bits 3 to 8 */
+ data = scr->hpos() & 0xfc;
+ }
+
+ return data;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_clut_w)
+{
+ m_clut[(offset >> 8) & 0x0f] = data & 0x7f;
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_status_r)
+{
+ UINT8 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 */
+ data |= m_status;
+
+ return data;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_line_int_w)
+{
+ m_line_int = data;
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_lmpr_r)
+{
+ return m_lmpr;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_lmpr_w)
+{
+ address_space &space_program = m_maincpu->space(AS_PROGRAM);
+
+ m_lmpr = data;
+ samcoupe_update_memory(space_program);
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_hmpr_r)
+{
+ return m_hmpr;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_hmpr_w)
+{
+ address_space &space_program = m_maincpu->space(AS_PROGRAM);
+
+ m_hmpr = data;
+ samcoupe_update_memory(space_program);
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_vmpr_r)
+{
+ return m_vmpr;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_vmpr_w)
+{
+ address_space &space_program = m_maincpu->space(AS_PROGRAM);
+
+ m_vmpr = data;
+ samcoupe_update_memory(space_program);
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_midi_r)
+{
+ logerror("%s: read from midi port\n", machine().describe_context());
+ return 0xff;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_midi_w)
+{
+ logerror("%s: write to midi port: 0x%02x\n", machine().describe_context(), data);
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_keyboard_r)
+{
+ UINT8 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;
+
+ 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();
+ }
+
+ /* 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;
+
+ return data;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_border_w)
+{
+ m_border = data;
+
+ /* bit 3, cassette output */
+ m_cassette->output( BIT(data, 3) ? -1.0 : +1.0);
+
+ /* bit 4, beep */
+ m_speaker->level_w(BIT(data, 4));
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_attributes_r)
+{
+ return m_attribute;
+}
+
+WRITE_LINE_MEMBER(samcoupe_state::write_lpt1_busy)
+{
+ m_lpt1_busy = state;
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_lpt1_busy_r)
+{
+ return m_lpt1_busy;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_lpt1_strobe_w)
+{
+ m_lpt1->write_strobe(data & 1);
+}
+
+DECLARE_WRITE_LINE_MEMBER(samcoupe_state::write_lpt2_busy)
+{
+ m_lpt2_busy = state;
+}
+
+READ8_MEMBER(samcoupe_state::samcoupe_lpt2_busy_r)
+{
+ return m_lpt2_busy;
+}
+
+WRITE8_MEMBER(samcoupe_state::samcoupe_lpt2_strobe_w)
+{
+ m_lpt2->write_strobe(data & 1);
+}
+
+/***************************************************************************
+ ADDRESS MAPS
+***************************************************************************/
+
+static ADDRESS_MAP_START( samcoupe_mem, AS_PROGRAM, 8, samcoupe_state )
+ AM_RANGE(0x0000, 0x3fff) AM_RAM AM_READWRITE(sam_bank1_r, sam_bank1_w) // AM_RAMBANK("bank1")
+ AM_RANGE(0x4000, 0x7fff) AM_RAM AM_READWRITE(sam_bank2_r, sam_bank2_w) // AM_RAMBANK("bank2")
+ AM_RANGE(0x8000, 0xbfff) AM_RAM AM_READWRITE(sam_bank3_r, sam_bank3_w) // AM_RAMBANK("bank3")
+ AM_RANGE(0xc000, 0xffff) AM_RAM AM_READWRITE(sam_bank4_r, sam_bank4_w) // AM_RAMBANK("bank4")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( samcoupe_io, AS_IO, 8, samcoupe_state )
+ AM_RANGE(0x0080, 0x0081) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_WRITE(samcoupe_ext_mem_w)
+ AM_RANGE(0x00e0, 0x00e7) AM_MIRROR(0xff10) AM_MASK(0xffff) AM_READWRITE(samcoupe_disk_r, samcoupe_disk_w)
+ AM_RANGE(0x00e8, 0x00e8) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_DEVWRITE("lpt1_data_out", output_latch_device, write)
+ AM_RANGE(0x00e9, 0x00e9) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lpt1_busy_r, samcoupe_lpt1_strobe_w)
+ AM_RANGE(0x00ea, 0x00ea) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_DEVWRITE("lpt2_data_out", output_latch_device, write)
+ AM_RANGE(0x00eb, 0x00eb) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lpt2_busy_r, samcoupe_lpt2_strobe_w)
+ AM_RANGE(0x00f8, 0x00f8) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_pen_r, samcoupe_clut_w)
+ AM_RANGE(0x00f9, 0x00f9) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_status_r, samcoupe_line_int_w)
+ AM_RANGE(0x00fa, 0x00fa) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_lmpr_r, samcoupe_lmpr_w)
+ AM_RANGE(0x00fb, 0x00fb) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_hmpr_r, samcoupe_hmpr_w)
+ AM_RANGE(0x00fc, 0x00fc) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_vmpr_r, samcoupe_vmpr_w)
+ AM_RANGE(0x00fd, 0x00fd) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_midi_r, samcoupe_midi_w)
+ AM_RANGE(0x00fe, 0x00fe) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READWRITE(samcoupe_keyboard_r, samcoupe_border_w)
+ AM_RANGE(0x00ff, 0x00ff) AM_MIRROR(0xff00) AM_MASK(0xffff) AM_READ(samcoupe_attributes_r)
+ AM_RANGE(0x00ff, 0x00ff) AM_MIRROR(0xfe00) AM_MASK(0xffff) AM_DEVWRITE("saa1099", saa1099_device, data_w)
+ AM_RANGE(0x01ff, 0x01ff) AM_MIRROR(0xfe00) AM_MASK(0xffff) AM_DEVWRITE("saa1099", saa1099_device, control_w)
+ADDRESS_MAP_END
+
+
+/***************************************************************************
+ INTERRUPTS
+***************************************************************************/
+
+TIMER_CALLBACK_MEMBER(samcoupe_state::irq_off)
+{
+ /* adjust STATUS register */
+ m_status |= param;
+
+ /* clear interrupt */
+ if ((m_status & 0x1f) == 0x1f)
+ m_maincpu->set_input_line(0, CLEAR_LINE);
+
+}
+
+void samcoupe_state::samcoupe_irq(UINT8 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);
+
+ /* adjust STATUS register */
+ m_status &= ~src;
+}
+
+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)
+
+ 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('\xa9')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(F10))
+
+ 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('\xa3')
+ 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("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('\\')
+
+ 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))
+
+ 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)
+
+ PORT_START("mouse_x")
+ PORT_BIT(0xfff, 0x000, IPT_MOUSE_X) PORT_SENSITIVITY(50) PORT_KEYDELTA(0) PORT_REVERSE
+
+ PORT_START("mouse_y")
+ PORT_BIT(0xfff, 0x000, IPT_MOUSE_Y) PORT_SENSITIVITY(50) PORT_KEYDELTA(0)
+
+ PORT_START("config")
+ PORT_CONFNAME(0x01, 0x00, "Real Time Clock")
+ PORT_CONFSETTING( 0x00, DEF_STR(None))
+ PORT_CONFSETTING( 0x01, "SAMBUS")
+INPUT_PORTS_END
+
+
+/***************************************************************************
+ PALETTE
+***************************************************************************/
+
+/*
+ Decode colours for the palette as follows:
+
+ bit 7 6 5 4 3 2 1 0
+ nothing G+4 R+4 B+4 ALL+1 G+2 R+2 B+2
+
+*/
+PALETTE_INIT_MEMBER(samcoupe_state, samcoupe)
+{
+ for (int i = 0; i < 128; i++)
+ {
+ UINT8 b = BIT(i, 0) * 2 + BIT(i, 4) * 4 + BIT(i, 3);
+ UINT8 r = BIT(i, 1) * 2 + BIT(i, 5) * 4 + BIT(i, 3);
+ UINT8 g = BIT(i, 2) * 2 + BIT(i, 6) * 4 + BIT(i, 3);
+
+ r <<= 5;
+ g <<= 5;
+ b <<= 5;
+
+ palette.set_pen_color(i, rgb_t(r, g, b));
+ }
+
+ palette.palette()->normalize_range(0, 127);
+}
+
+
+/***************************************************************************
+ MACHINE DRIVERS
+***************************************************************************/
+
+FLOPPY_FORMATS_MEMBER( samcoupe_state::floppy_formats )
+ FLOPPY_MGT_FORMAT
+FLOPPY_FORMATS_END
+
+static SLOT_INTERFACE_START( samcoupe_floppies )
+ SLOT_INTERFACE( "35dd", FLOPPY_35_DD )
+SLOT_INTERFACE_END
+
+
+static MACHINE_CONFIG_START( samcoupe, samcoupe_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, SAMCOUPE_XTAL_X1 / 4) /* 6 MHz */
+ MCFG_CPU_PROGRAM_MAP(samcoupe_mem)
+ MCFG_CPU_IO_MAP(samcoupe_io)
+ MCFG_CPU_VBLANK_INT_DRIVER("screen", samcoupe_state, samcoupe_frame_interrupt)
+
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_RAW_PARAMS(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)
+ MCFG_SCREEN_UPDATE_DRIVER(samcoupe_state, screen_update)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 128)
+ MCFG_PALETTE_INIT_OWNER(samcoupe_state, samcoupe)
+
+ /* devices */
+ MCFG_CENTRONICS_ADD("lpt1", centronics_devices, "printer")
+ MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(samcoupe_state, write_lpt1_busy))
+
+ MCFG_CENTRONICS_OUTPUT_LATCH_ADD("lpt1_data_out", "lpt1")
+
+ MCFG_CENTRONICS_ADD("lpt2", centronics_devices, "printer")
+ MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(samcoupe_state, write_lpt2_busy))
+
+ MCFG_CENTRONICS_OUTPUT_LATCH_ADD("lpt2_data_out", "lpt2")
+
+ MCFG_DEVICE_ADD("sambus_clock", MSM6242, XTAL_32_768kHz)
+ MCFG_CASSETTE_ADD("cassette")
+ MCFG_CASSETTE_FORMATS(tzx_cassette_formats)
+ MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED)
+ MCFG_CASSETTE_INTERFACE("samcoupe_cass")
+
+ MCFG_SOFTWARE_LIST_ADD("cass_list","samcoupe_cass")
+
+ MCFG_WD1772_ADD("wd1772", SAMCOUPE_XTAL_X1/3)
+ MCFG_FLOPPY_DRIVE_ADD("wd1772:0", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD("wd1772:1", samcoupe_floppies, "35dd", samcoupe_state::floppy_formats)
+ MCFG_SOFTWARE_LIST_ADD("flop_list","samcoupe_flop")
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+ MCFG_SAA1099_ADD("saa1099", SAMCOUPE_XTAL_X1/3) /* 8 MHz */
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("512K")
+ MCFG_RAM_EXTRA_OPTIONS("256K,1280K,1536K,2304K,2560K,3328K,3584K,4352K,4608K")
+MACHINE_CONFIG_END
+
+
+/***************************************************************************
+ ROM DEFINITIONS
+***************************************************************************/
+
+/*
+ The bios is actually 32K. This is the combined version of the two old 16K MESS roms.
+ It does match the 3.0 one the most, but the first half differs in one byte
+ and in the second half, the case of the "plc" in the company string differs.
+*/
+ROM_START( samcoupe )
+ ROM_REGION( 0x8000, "maincpu", 0 )
+ ROM_SYSTEM_BIOS( 0, "31", "v3.1" )
+ ROMX_LOAD( "rom31.z5", 0x0000, 0x8000, CRC(0b7e3585) SHA1(c86601633fb61a8c517f7657aad9af4e6870f2ee), ROM_BIOS(1) )
+ ROM_SYSTEM_BIOS( 1, "30", "v3.0" )
+ ROMX_LOAD( "rom30.z5", 0x0000, 0x8000, CRC(e535c25d) SHA1(d390f0be420dfb12b1e54a4f528b5055d7d97e2a), ROM_BIOS(2) )
+ ROM_SYSTEM_BIOS( 2, "25", "v2.5" )
+ ROMX_LOAD( "rom25.z5", 0x0000, 0x8000, CRC(ddadd358) SHA1(a25ed85a0f1134ac3a481a3225f24a8bd3a790cf), ROM_BIOS(3) )
+ ROM_SYSTEM_BIOS( 3, "24", "v2.4" )
+ ROMX_LOAD( "rom24.z5", 0x0000, 0x8000, CRC(bb23fee4) SHA1(10cd911ba237dd2cf0c2637be1ad6745b7cc89b9), ROM_BIOS(4) )
+ ROM_SYSTEM_BIOS( 4, "21", "v2.1" )
+ ROMX_LOAD( "rom21.z5", 0x0000, 0x8000, CRC(f6804b46) SHA1(11dcac5fdea782cdac03b4d0d7ac25d88547eefe), ROM_BIOS(5) )
+ ROM_SYSTEM_BIOS( 5, "20", "v2.0" )
+ ROMX_LOAD( "rom20.z5", 0x0000, 0x8000, CRC(eaf32054) SHA1(41736323f0236649f2d5fe111f900def8db93a13), ROM_BIOS(6) )
+ ROM_SYSTEM_BIOS( 6, "181", "v1.81" )
+ ROMX_LOAD( "rom181.z5", 0x0000, 0x8000, CRC(d25e1de1) SHA1(cb0fa79e4d5f7df0b57ede08ea7ecc9ae152f534), ROM_BIOS(7) )
+ ROM_SYSTEM_BIOS( 7, "18", "v1.8" )
+ ROMX_LOAD( "rom18.z5", 0x0000, 0x8000, CRC(f626063f) SHA1(485e7d9e9a4f8a70c0f93cd6e69ff12269438829), ROM_BIOS(8) )
+ ROM_SYSTEM_BIOS( 8, "14", "v1.4" )
+ ROMX_LOAD( "rom14.z5", 0x0000, 0x8000, CRC(08799596) SHA1(b4e596051f2748dee9481ea4af7d15ccddc1e1b5), ROM_BIOS(9) )
+ ROM_SYSTEM_BIOS( 9, "13", "v1.3" )
+ ROMX_LOAD( "rom13.z5", 0x0000, 0x8000, CRC(2093768c) SHA1(af8d348fd080b18a4cbe9ed69d254be7be330146), ROM_BIOS(10) )
+ ROM_SYSTEM_BIOS( 10, "12", "v1.2" )
+ ROMX_LOAD( "rom12.z5", 0x0000, 0x8000, CRC(7fe37dd8) SHA1(9339a0c1f72e8512c6f32dec15ab7d6c3bb04151), ROM_BIOS(11) )
+ ROM_SYSTEM_BIOS( 11, "10", "v1.0" )
+ ROMX_LOAD( "rom10.z5", 0x0000, 0x8000, CRC(3659d31f) SHA1(d3de7bb74e04d5b4dc7477f70de54d540b1bcc07), ROM_BIOS(12) )
+ ROM_SYSTEM_BIOS( 12, "04", "v0.4" )
+ ROMX_LOAD( "rom04.z5", 0x0000, 0x8000, CRC(f439e84e) SHA1(8bc457a5c764b0bb0aa7008c57f28c30248fc6a4), ROM_BIOS(13) )
+ ROM_SYSTEM_BIOS( 13, "01", "v0.1" )
+ ROMX_LOAD( "rom01.z5", 0x0000, 0x8000, CRC(c04acfdf) SHA1(8976ed005c14905eec1215f0a5c28aa686a7dda2), ROM_BIOS(14) )
+ROM_END
+
+/***************************************************************************
+ GAME DRIVERS
+***************************************************************************/
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1989, samcoupe, 0, 0, samcoupe, samcoupe, driver_device, 0, "Miles Gordon Technology plc", "SAM Coupe", 0 )