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Diffstat (limited to 'src/mame/drivers/sbrain.cpp')
-rw-r--r--src/mame/drivers/sbrain.cpp762
1 files changed, 0 insertions, 762 deletions
diff --git a/src/mame/drivers/sbrain.cpp b/src/mame/drivers/sbrain.cpp
deleted file mode 100644
index 5196e89e441..00000000000
--- a/src/mame/drivers/sbrain.cpp
+++ /dev/null
@@ -1,762 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Robbbert
-/************************************************************************************************************
-
-Intertec SuperBrain
-
-2013-08-19 Skeleton
-
-Intertec Compustar terminal appears to have identical hardware. Need roms for it.
-
-Chips: 2x Z80; FD1791; 2x 8251; 8255; BR1941; CRT8002-003; KR3600-056; DP8350; MM5035
-Xtals: 16.0, 10.92, 5.0688
-RAM: 32K or 64K dynamic (TMS4116-20NL); 1K static disk buffer (MM2114)
-Disk parameters: 512 bytes x 10 sectors x 35 tracks. 1 and 2-sided disks supported.
-Sound: Beeper
-Expansion bus: 40 pins, nearly identical to TRS-80
-
-The boot prom is shared between both cpus. This feat is accomplished by holding the sub cpu
- in reset, until the main cpu has prepared a few memory locations. The first thing in the rom
- is to check these locations, and then program flow splits into 2 sections, one for each cpu.
-The main cpu does a busreq to gain access to the sub cpu's 1k static ram. When the sub cpu
- responds with busack, then the main cpu switches bank2. In emulation, it isn't actually
- necessary to stop the sub cpu because of other handshaking. Our Z80 emulation doesn't
- support the busack signal anyway, so we just assume it is granted immediately.
-When booted, the time (corrupted) is displayed at top right. You need to run TIME hh:mm:ss
- to set the time (TIME.COM must be on the disk).
-
-The schematic in parts is difficult to read. Some assumptions have been made.
-
-To Do:
-- Improve keyboard.
-- Row buffering DMA (DP8350, MM5035) and line-by-line rendering.
-- Proper character generator emulation (CRT8002).
-- Add expansion bus slot.
-- Probably lots of other stuff.
-
-*************************************************************************************************************/
-
-
-#include "emu.h"
-#include "cpu/z80/z80.h"
-#include "bus/rs232/rs232.h"
-#include "imagedev/floppy.h"
-#include "machine/com8116.h"
-#include "machine/i8251.h"
-#include "machine/i8255.h"
-#include "machine/wd_fdc.h"
-#include "machine/ram.h"
-#include "machine/timer.h"
-#include "sound/beep.h"
-#include "video/dp8350.h"
-#include "screen.h"
-#include "speaker.h"
-#include <algorithm>
-
-
-class sbrain_state : public driver_device
-{
-public:
- sbrain_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_subcpu(*this, "subcpu")
- , m_p_chargen(*this, "chargen")
- , m_beep(*this, "beeper")
- , m_crtc(*this, "crtc")
- , m_usart(*this, "usart%u", 0U)
- , m_mainport(*this, "mainport")
- , m_ppi(*this, "ppi")
- , m_fdc(*this, "fdc")
- , m_floppy(*this, "fdc:%u", 0U)
- , m_ram(*this, RAM_TAG)
- , m_boot_prom(*this, "subcpu")
- , m_disk_buffer(*this, "buffer")
- , m_keyboard(*this, "X%u", 0)
- , m_modifiers(*this, "MODIFIERS")
- , m_serial_sw(*this, "BAUDCLOCK")
- {
- }
-
- void sbrain(machine_config &config);
-
-protected:
- virtual void machine_start() override;
- virtual void machine_reset() override;
-
-private:
- u8 mem_r(offs_t offset);
- void mem_w(offs_t offset, u8 data);
-
- u8 ppi_pa_r();
- void ppi_pa_w(u8 data);
- u8 ppi_pb_r();
- void ppi_pb_w(u8 data);
- u8 ppi_pc_r();
- void ppi_pc_w(u8 data);
- u8 char_int_ack_r();
- void char_int_ack_w(u8 data);
- u8 keyboard_r();
-
- void disk_select_w(u8 data);
-
- u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
- TIMER_DEVICE_CALLBACK_MEMBER(kbd_scan);
-
- DECLARE_WRITE_LINE_MEMBER(crtc_lrc_w);
- DECLARE_WRITE_LINE_MEMBER(crtc_vblank_w);
- DECLARE_WRITE_LINE_MEMBER(crtc_vsync_w);
-
- DECLARE_WRITE_LINE_MEMBER(external_txc_w);
- DECLARE_WRITE_LINE_MEMBER(external_rxc_w);
- DECLARE_WRITE_LINE_MEMBER(internal_txc_rxc_w);
-
- void sbrain_io(address_map &map);
- void sbrain_mem(address_map &map);
- void sbrain_subio(address_map &map);
- void sbrain_submem(address_map &map);
-
- bool m_busak;
- u8 m_keydown;
- u8 m_porta;
- u8 m_portb;
- u8 m_portc;
- u8 m_port10;
- u8 m_key_data;
- u8 m_framecnt;
-
- required_device<cpu_device> m_maincpu;
- required_device<cpu_device> m_subcpu;
- required_region_ptr<u8> m_p_chargen;
- required_device<beep_device> m_beep;
- required_device<dp8350_device> m_crtc;
- required_device_array<i8251_device, 2> m_usart;
- required_device<rs232_port_device> m_mainport;
- required_device<i8255_device> m_ppi;
- required_device<fd1791_device> m_fdc;
- required_device_array<floppy_connector, 4> m_floppy;
- required_device<ram_device> m_ram;
- required_region_ptr<u8> m_boot_prom;
- required_shared_ptr<u8> m_disk_buffer;
-
- required_ioport_array<10> m_keyboard;
- required_ioport m_modifiers;
- required_ioport m_serial_sw;
-};
-
-void sbrain_state::sbrain_mem(address_map &map)
-{
- map(0x0000, 0xffff).rw(FUNC(sbrain_state::mem_r), FUNC(sbrain_state::mem_w));
-}
-
-void sbrain_state::sbrain_io(address_map &map)
-{
- map.global_mask(0xff);
- map(0x40, 0x41).mirror(6).rw(m_usart[0], FUNC(i8251_device::read), FUNC(i8251_device::write));
- map(0x48, 0x48).mirror(7).rw(FUNC(sbrain_state::char_int_ack_r), FUNC(sbrain_state::char_int_ack_w)); //chr_int_latch
- map(0x50, 0x50).mirror(7).r(FUNC(sbrain_state::keyboard_r));
- map(0x58, 0x59).mirror(6).rw(m_usart[1], FUNC(i8251_device::read), FUNC(i8251_device::write));
- map(0x60, 0x60).mirror(7).w("brg", FUNC(com8116_device::stt_str_w));
- map(0x68, 0x6b).mirror(4).rw(m_ppi, FUNC(i8255_device::read), FUNC(i8255_device::write));
-}
-
-void sbrain_state::sbrain_submem(address_map &map)
-{
- map(0x0000, 0x07ff).mirror(0xf000).rom().region("subcpu", 0);
- map(0x8800, 0x8bff).mirror(0x7400).ram().share("buffer");
-}
-
-void sbrain_state::sbrain_subio(address_map &map)
-{
- map.global_mask(0x1f);
- map(0x08, 0x0b).mirror(4).rw(m_fdc, FUNC(fd1791_device::read), FUNC(fd1791_device::write));
- map(0x10, 0x10).mirror(7).w(FUNC(sbrain_state::disk_select_w));
-}
-
-
-u8 sbrain_state::mem_r(offs_t offset)
-{
- switch (offset & 0xc000)
- {
- case 0x0000:
- // PPIC-2 set selects boot PROM
- if (BIT(m_portc, 2))
- return m_boot_prom[offset & 0x7ff];
-
- // lowest 16K of RAM is disabled when PPIC-0 is set
- if (BIT(m_portc, 0))
- return 0xff;
- break;
-
- case 0x8000:
- // resetting PPIC-4 selects disk buffer RAM
- if (!BIT(m_portc, 4))
- return m_disk_buffer[offset & 0x3ff];
-
- break;
- }
-
- return m_ram->read(offset);
-}
-
-void sbrain_state::mem_w(offs_t offset, u8 data)
-{
- // any memory write affects CRTC when PPIC-0 is set
- if (BIT(m_portc, 0))
- m_crtc->register_load(bitswap<2>(data, 0, 1), offset & 0xfff);
-
- switch (offset & 0xc000)
- {
- case 0x0000:
- // can't write to boot PROM
- if (BIT(m_portc, 2))
- return;
-
- // RAS is disabled for bank 0 when PPIC-0 is set
- if (BIT(m_portc, 0))
- return;
-
- break;
-
- case 0x8000:
- // resetting PPIC-4 selects disk buffer RAM
- if (!BIT(m_portc, 4))
- {
- m_disk_buffer[offset & 0x3ff] = data;
- break;
- }
-
- break;
- }
-
- m_ram->write(offset, data);
-}
-
-u8 sbrain_state::char_int_ack_r()
-{
- if (!machine().side_effects_disabled())
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
- return 0xff;
-}
-
-void sbrain_state::char_int_ack_w(u8 data)
-{
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
-}
-
-u8 sbrain_state::keyboard_r()
-{
- return m_key_data;
-}
-
-/* Misc disk functions
-d0 : busy signal to master CPU
-d1 : SEL A (drive 0?)
-d2 : SEL B (drive 1?)
-d3 : SEL C
-d4 : SEL D
-d5 : side select
-d6,7 : not used
-*/
-void sbrain_state::disk_select_w(u8 data)
-{
- m_port10 = data | 0xc0;
-
- floppy_image_device *floppy = nullptr;
- for (int d = 0; d < 4; d++)
- if (BIT(m_port10, d + 1))
- {
- floppy = m_floppy[d]->get_device();
- if (floppy)
- break;
- }
-
- m_fdc->set_floppy(floppy);
-
- if (floppy)
- floppy->ss_w(BIT(m_port10, 5));
-}
-
-u8 sbrain_state::ppi_pa_r()
-{
- return m_porta;
-}
-
-/* Video functions:
-d0,1 : 11 = alphanumeric; 10 = external ;other = graphics
-d2 : Underline
-d3,4 : not used
-d5 : strike through
-d6 : 1=60hz 0=50hz
-d7 : reverse video
-*/
-void sbrain_state::ppi_pa_w(u8 data)
-{
- m_crtc->refresh_control(BIT(data, 6));
-
- m_porta = data;
-}
-
-/* Inputs
-d0 : data ready from keyboard
-d1 : key held down
-d2 : Vert Blank
-d3 : not used
-d4 : /capslock
-d5 : disk status: 1 = busy, 0 = ready
-d6 : Ring Indicator line from main rs232 port, 1=normal, 0=set
-d7 : cpu2 /busak line
-*/
-u8 sbrain_state::ppi_pb_r()
-{
- u8 vertsync = m_crtc->vblank_r() << 2;
- u8 capslock = BIT(m_modifiers->read(), 0) << 4; // bit 4, capslock
- u8 p10d0 = BIT(m_port10, 0) << 5; // bit 5
- u8 ri = m_mainport->ri_r() << 6;
- u8 busak = m_busak ? 128 : 0; // bit 7
- return busak | ri | p10d0 | capslock | vertsync | m_keydown;
-}
-
-void sbrain_state::ppi_pb_w(u8 data)
-{
- m_portb = data & 8;
-}
-
-u8 sbrain_state::ppi_pc_r()
-{
- return m_portc;
-}
-
-/* System
-d0 : 1 = bank 0 disabled
-d1 : character blanking
-d2 : 1=enable rom, 0=enable ram bank 0
-d3 : cpu2 reset line
-d4 : 1=enable ram bank 2, 0=bank 2 uses disk buffer
-d5 : cpu2 /busreq line
-d6 : beeper
-d7 : keyboard, 1=enable comms, 0=reset
-*/
-void sbrain_state::ppi_pc_w(u8 data)
-{
- m_portc = data;
- m_beep->set_state(BIT(data, 6));
- if (!BIT(data, 7))
- m_keydown &= 2; // ack DR
-
- m_subcpu->set_input_line(INPUT_LINE_RESET, BIT(data, 3) ? ASSERT_LINE : CLEAR_LINE);
- m_fdc->mr_w(!BIT(data, 3));
- if (BIT(data, 3))
- disk_select_w(0);
- m_subcpu->set_input_line(Z80_INPUT_LINE_BUSRQ, BIT(data, 5) ? ASSERT_LINE : CLEAR_LINE); // ignored in z80.cpp
- m_busak = BIT(data, 5);
-}
-
-WRITE_LINE_MEMBER(sbrain_state::external_txc_w)
-{
- if (!BIT(m_serial_sw->read(), 0))
- m_usart[1]->write_txc(state);
-}
-
-WRITE_LINE_MEMBER(sbrain_state::external_rxc_w)
-{
- if (!BIT(m_serial_sw->read(), 2))
- m_usart[1]->write_rxc(state);
-}
-
-WRITE_LINE_MEMBER(sbrain_state::internal_txc_rxc_w)
-{
- if (!BIT(m_serial_sw->read(), 1))
- m_usart[1]->write_txc(state);
- if (!BIT(m_serial_sw->read(), 3))
- m_usart[1]->write_rxc(state);
- if (!BIT(m_serial_sw->read(), 4))
- m_mainport->write_etc(state);
-}
-
-u8 translate_table[3][10][8] = {
- // unshifted
- {
- { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 },
- { 0x38, 0x39, 0x2e, 0x2c, 0x2d, 0x00, 0x00, 0x00 },
- { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
- { 0x09, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67 },
- { 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f },
- { 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77 },
- { 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x7b, 0x03, 0x7f },
- { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 },
- { 0x38, 0x39, 0x2d, 0x3d, 0x5c, 0x08, 0x0a, 0x0d },
- { 0x1b, 0x00, 0x20, 0x3b, 0x27, 0x2c, 0x2e, 0x2f }
- },
- // shift
- {
- { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 },
- { 0x38, 0x39, 0x2e, 0x2c, 0x2d, 0x00, 0x00, 0x00 },
- { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
- { 0x09, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 },
- { 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f },
- { 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57 },
- { 0x58, 0x59, 0x5a, 0x5d, 0x7c, 0x7d, 0x03, 0x7f },
- { 0x29, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5e, 0x26 },
- { 0x2a, 0x28, 0x5f, 0x2b, 0x7e, 0x08, 0x0a, 0x0d },
- { 0x1b, 0x00, 0x20, 0x3a, 0x22, 0x3c, 0x3e, 0x3f }
- },
- // ctrl
- {
- { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 },
- { 0x38, 0x39, 0x2e, 0x2c, 0x2d, 0x00, 0x00, 0x00 },
- { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
- { 0x09, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
- { 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
- { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
- { 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x03, 0x1f },
- { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 },
- { 0x38, 0x39, 0x2d, 0x3d, 0x1e, 0x08, 0x0a, 0x0d },
- { 0x1b, 0x00, 0x20, 0x3b, 0x27, 0x2c, 0x2e, 0x2f }
- }
-};
-
-static INPUT_PORTS_START( sbrain )
- PORT_START("X0")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
-
- PORT_START("X1")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad .") PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad ,") PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(UCHAR_MAMEKEY(COMMA_PAD))
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad -") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD))
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Insert") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(INSERT))
-
- PORT_START("X2")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
-
- PORT_START("X3")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9)
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
-
- PORT_START("X4")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
-
- PORT_START("X5")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
-
- PORT_START("X6")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("[ ]") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR(']')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("{ }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('{') PORT_CHAR('}')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_END) PORT_CHAR(3)
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Delete") PORT_CODE(KEYCODE_DEL) PORT_CHAR(127)
-
- PORT_START("X7")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
-
- PORT_START("X8")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("\\ ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\\') PORT_CHAR('~')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Line Feed") PORT_CODE(KEYCODE_INSERT) PORT_CHAR(10)
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
-
- PORT_START("X9")
- PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC)
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Here Is") PORT_CODE(KEYCODE_HOME)
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32)
- PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
- PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("' \"") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('\"')
- PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
- PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
-
- PORT_START("MODIFIERS")
- PORT_BIT(0x01,IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CapsLock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE
- PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
-
- PORT_START("BAUDCLOCK")
- PORT_DIPNAME(0x03, 0x01, "Main TX Clock") PORT_DIPLOCATION("SW:1,3")
- PORT_DIPSETTING(0x01, "Internal")
- PORT_DIPSETTING(0x02, "External")
- PORT_DIPNAME(0x0c, 0x04, "Main RX Clock") PORT_DIPLOCATION("SW:2,4")
- PORT_DIPSETTING(0x04, "Internal")
- PORT_DIPSETTING(0x08, "External")
- PORT_DIPNAME(0x10, 0x10, "Internal Baud Clock to Main Port") PORT_DIPLOCATION("SW:5")
- PORT_DIPSETTING(0x10, DEF_STR(Off))
- PORT_DIPSETTING(0x00, DEF_STR(On))
-INPUT_PORTS_END
-
-TIMER_DEVICE_CALLBACK_MEMBER(sbrain_state::kbd_scan)
-{
- // m_keydown: d0 = 1 after key pressed, and is reset by pc7; d1 = 1 while a key is down.
- m_keydown &= 1;
- u8 i, j, keyin, mods = m_modifiers->read() & 6;
- u8 translate_set = 0;
- if (BIT(mods, 1))
- translate_set = 1;
- else
- if (BIT(mods, 2))
- translate_set = 2;
-
- for (i = 0; i < 10; i++)
- {
- keyin = m_keyboard[i]->read();
- if (keyin)
- {
- for (j = 0; j < 8; j++)
- {
- if (BIT(keyin, j))
- {
- u8 pressed = translate_table[translate_set][i][j];
- m_keydown = (m_key_data == pressed) ? (m_keydown | 2) : 3;
- m_key_data = pressed;
- return;
- }
- }
- }
- }
- m_key_data = 0xff;
-}
-
-WRITE_LINE_MEMBER(sbrain_state::crtc_lrc_w)
-{
- // TODO: actually triggered by BUSACK and taken after DMA burst finishes
- if (state && !m_crtc->lbre_r() && !m_crtc->vblank_r())
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
-}
-
-WRITE_LINE_MEMBER(sbrain_state::crtc_vblank_w)
-{
- if (state)
- m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
-}
-
-WRITE_LINE_MEMBER(sbrain_state::crtc_vsync_w)
-{
- // TODO: internal to the CRT8002
- if (!state)
- m_framecnt++;
-}
-
-void sbrain_state::machine_start()
-{
- std::fill_n(m_ram->pointer(), m_ram->size(), 0x00);
-
- m_usart[0]->write_cts(0);
-}
-
-static void sbrain_floppies(device_slot_interface &device)
-{
- device.option_add("525dd", FLOPPY_525_DD);
-}
-
-void sbrain_state::machine_reset()
-{
- m_keydown = 0;
-
- for (auto &floppy : m_floppy)
- {
- floppy_image_device *device = floppy->get_device();
- if (device != nullptr)
- device->mon_w(0); // motors run all the time
- }
-
- // PPI resets to input mode, which causes PPIC-3 to be pulled up to +5V, resetting disk CPU
-}
-
-u32 sbrain_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
-{
- // PPIC-3 blanks entire display
- if (BIT(m_portc, 3))
- {
- bitmap.fill(rgb_t::black(), cliprect);
- return 0;
- }
-
- u8 y,ra,chr,gfx;
- uint16_t sy=0,x;
-
- // Where attributes come from:
- // - Most systems use ram for character-based attributes, but this one uses strictly hardware which would seem cumbersome
- // - d0,1 graphics from porta d0,d1
- // - d2 strike-through from porta d5
- // - d3 underline from porta d2
- // - d4 reverse-video from porta d7
- // - d5 blank from PC1 (scan-line based)
- // - d6 flash from bit 7 of each character
-
- uint16_t ma = m_crtc->top_of_page();
- uint16_t cr = m_crtc->cursor_address();
- uint8_t *videoram = &m_ram->pointer()[m_ram->size() - 0x800];
- for (y = 0; y < 24; y++)
- {
- for (ra = 0; ra < 10; ra++)
- {
- uint32_t *p = &bitmap.pix32(sy++);
-
- for (x = 0; x < 80; x++)
- {
- gfx = 0;
- if (ra > 0)
- {
- chr = videoram[(x + ma) & 0x7ff];
-
- if (!BIT(chr, 7) || BIT(m_framecnt, 5))
- {
- chr &= 0x7f;
-
- if (chr)
- gfx = m_p_chargen[(chr<<4) | (ra - 1)]; // ra hacked for incorrect character generator
- }
- }
-
- if (((x + ma) & 0xfff) == cr)
- gfx ^= 0x7f;
-
- /* Display a scanline of a character */
- *p++ = BIT(gfx, 6) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 5) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 4) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 3) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 2) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 1) ? rgb_t::white() : rgb_t::black();
- *p++ = BIT(gfx, 0) ? rgb_t::white() : rgb_t::black();
- }
- }
- ma = (ma + 80) & 0xfff;
- }
- return 0;
-}
-
-void sbrain_state::sbrain(machine_config &config)
-{
- // basic machine hardware
- Z80(config, m_maincpu, 16_MHz_XTAL / 4);
- m_maincpu->set_addrmap(AS_PROGRAM, &sbrain_state::sbrain_mem);
- m_maincpu->set_addrmap(AS_IO, &sbrain_state::sbrain_io);
-
- Z80(config, m_subcpu, 16_MHz_XTAL / 4);
- m_subcpu->set_addrmap(AS_PROGRAM, &sbrain_state::sbrain_submem);
- m_subcpu->set_addrmap(AS_IO, &sbrain_state::sbrain_subio);
-
- RAM(config, m_ram).set_default_size("64K").set_extra_options("32K");
-
- /* video hardware */
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_color(rgb_t::amber());
- screen.set_screen_update(FUNC(sbrain_state::screen_update));
-
- DP8350(config, m_crtc, 10.92_MHz_XTAL).set_screen("screen"); // XTAL not directly connected
- m_crtc->character_generator_program(1);
- m_crtc->lrc_callback().set(FUNC(sbrain_state::crtc_lrc_w));
- m_crtc->vblank_callback().set(FUNC(sbrain_state::crtc_vblank_w));
- m_crtc->vsync_callback().set(FUNC(sbrain_state::crtc_vsync_w));
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
- BEEP(config, m_beep, 800).add_route(ALL_OUTPUTS, "mono", 1.00);
-
- /* Devices */
- I8255(config, m_ppi);
- m_ppi->in_pa_callback().set(FUNC(sbrain_state::ppi_pa_r));
- m_ppi->out_pa_callback().set(FUNC(sbrain_state::ppi_pa_w));
- m_ppi->in_pb_callback().set(FUNC(sbrain_state::ppi_pb_r));
- m_ppi->out_pb_callback().set(FUNC(sbrain_state::ppi_pb_w));
- m_ppi->in_pc_callback().set(FUNC(sbrain_state::ppi_pc_r));
- m_ppi->out_pc_callback().set(FUNC(sbrain_state::ppi_pc_w));
-
- I8251(config, m_usart[0], 16_MHz_XTAL / 8);
- m_usart[0]->txd_handler().set("auxport", FUNC(rs232_port_device::write_txd));
-
- I8251(config, m_usart[1], 16_MHz_XTAL / 8);
- m_usart[1]->txd_handler().set(m_mainport, FUNC(rs232_port_device::write_txd));
- m_usart[1]->rts_handler().set(m_mainport, FUNC(rs232_port_device::write_rts));
- m_usart[1]->dtr_handler().set(m_mainport, FUNC(rs232_port_device::write_dtr));
-
- RS232_PORT(config, m_mainport, default_rs232_devices, nullptr);
- m_mainport->rxd_handler().set(m_usart[1], FUNC(i8251_device::write_rxd));
- m_mainport->cts_handler().set(m_usart[1], FUNC(i8251_device::write_cts));
- m_mainport->dsr_handler().set(m_usart[1], FUNC(i8251_device::write_dsr));
- m_mainport->txc_handler().set(FUNC(sbrain_state::external_txc_w));
- m_mainport->rxc_handler().set(FUNC(sbrain_state::external_rxc_w));
-
- rs232_port_device &auxport(RS232_PORT(config, "auxport", default_rs232_devices, nullptr));
- auxport.rxd_handler().set(m_usart[0], FUNC(i8251_device::write_rxd));
- auxport.dsr_handler().set(m_usart[0], FUNC(i8251_device::write_dsr));
-
- com8116_device &brg(COM8116(config, "brg", 5.0688_MHz_XTAL)); // BR1941L
- brg.fr_handler().set(m_usart[0], FUNC(i8251_device::write_txc));
- brg.fr_handler().append(m_usart[0], FUNC(i8251_device::write_rxc));
- brg.ft_handler().set(FUNC(sbrain_state::internal_txc_rxc_w));
-
- FD1791(config, m_fdc, 16_MHz_XTAL / 16);
- m_fdc->set_force_ready(true);
-
- FLOPPY_CONNECTOR(config, "fdc:0", sbrain_floppies, "525dd", floppy_image_device::default_floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, "fdc:1", sbrain_floppies, "525dd", floppy_image_device::default_floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, "fdc:2", sbrain_floppies, nullptr, floppy_image_device::default_floppy_formats).enable_sound(true);
- FLOPPY_CONNECTOR(config, "fdc:3", sbrain_floppies, nullptr, floppy_image_device::default_floppy_formats).enable_sound(true);
-
- TIMER(config, "timer_a", 0).configure_periodic(FUNC(sbrain_state::kbd_scan), attotime::from_hz(15));
-}
-
-ROM_START( sbrain )
- ROM_REGION( 0x0800, "subcpu", ROMREGION_ERASEFF ) // only the second CPU has its own ROM
- ROM_SYSTEM_BIOS( 0, "4_2", "4.2")
- ROMX_LOAD("sbii_sb4_2.z69", 0x0000, 0x0800, CRC(89313e26) SHA1(755d494934099a4488abc44a8566c18d7d4fdea3), ROM_BIOS(0))
- ROM_SYSTEM_BIOS( 1, "4_003", "4.003" )
- ROMX_LOAD("4_003_vc8001.z69", 0x0000, 0x0800, CRC(3ce3cd53) SHA1(fb6ade6bd67de3d9f911a1a48481ca619bda65ae), ROM_BIOS(1))
- ROM_SYSTEM_BIOS( 2, "3_1", "3.1" )
- ROMX_LOAD("3_1.z69", 0x0000, 0x0800, CRC(b6a2e6a5) SHA1(a646faaecb9ac45ee1a42764628e8971524d5c13), ROM_BIOS(2))
- ROM_SYSTEM_BIOS( 3, "3_05", "3.05" )
- ROMX_LOAD("qd_3_05.z69", 0x0000, 0x0800, CRC(aedbe777) SHA1(9ee9ca3f05e11ceb80896f06c3a3ae352db214dc), ROM_BIOS(3))
- ROM_SYSTEM_BIOS( 4, "4_2_50", "4.2 (50Hz hack)")
- ROMX_LOAD("sbii_sb4_2_50hz.z69", 0x0000, 0x0800, CRC(285a894b) SHA1(694fef446fe19c0962f79951aa4d464489a9d161), ROM_BIOS(4))
- // Using the chargen from 'c10' for now.
- ROM_REGION( 0x2000, "chargen", 0 )
- ROM_LOAD("c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf))
-ROM_END
-
-COMP( 1981, sbrain, 0, 0, sbrain, sbrain, sbrain_state, empty_init, "Intertec Data Systems", "SuperBrain Video Computer System", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_GRAPHICS )