From 17cc198882386354492f5ea4368274b577a53b9b Mon Sep 17 00:00:00 2001 From: Sergey Svishchev Date: Sat, 13 Dec 2014 19:19:03 +0300 Subject: vt240.c: mc7105 WIP (nw) --- src/mess/drivers/vt240.c | 117 +++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 98 insertions(+), 19 deletions(-) diff --git a/src/mess/drivers/vt240.c b/src/mess/drivers/vt240.c index b75fc2f3394..e0e5175ab7c 100644 --- a/src/mess/drivers/vt240.c +++ b/src/mess/drivers/vt240.c @@ -18,11 +18,28 @@ ****************************************************************************/ #include "emu.h" + +#include "bus/rs232/rs232.h" #include "cpu/i8085/i8085.h" #include "cpu/t11/t11.h" +#include "machine/clock.h" +#include "machine/dec_lk201.h" +#include "machine/i8251.h" +#include "machine/mc68681.h" +#include "machine/ms7004.h" #include "machine/ram.h" #include "video/upd7220.h" +#define VERBOSE_DBG 1 /* general debug messages */ + +#define DBG_LOG(N,M,A) \ + do { \ + if(VERBOSE_DBG>=N) \ + { \ + logerror("%11.6f at %s: ",machine().time().as_double(),machine().describe_context()); \ + logerror A; \ + } \ + } while (0) class vt240_state : public driver_device { @@ -30,10 +47,18 @@ public: vt240_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), + m_i8251(*this, "i8251"), + m_duart(*this, "duart"), m_hgdc(*this, "upd7220"), m_video_ram(*this, "video_ram"){ } required_device m_maincpu; + + required_device m_i8251; + DECLARE_WRITE_LINE_MEMBER(write_keyboard_clock); + + required_device m_duart; + required_device m_hgdc; DECLARE_READ8_MEMBER( test_r ); DECLARE_READ8_MEMBER( pcg_r ); @@ -44,12 +69,19 @@ public: //UINT8 *m_char_rom; required_shared_ptr m_video_ram; + DECLARE_DRIVER_INIT(vt240); virtual void machine_reset(); INTERRUPT_GEN_MEMBER(vt240_irq); UPD7220_DRAW_TEXT_LINE_MEMBER( hgdc_draw_text ); }; +WRITE_LINE_MEMBER(vt240_state::write_keyboard_clock) +{ + m_i8251->write_txc(state); + m_i8251->write_rxc(state); +} + /* TODO */ UPD7220_DRAW_TEXT_LINE_MEMBER( vt240_state::hgdc_draw_text ) { @@ -101,14 +133,30 @@ READ8_MEMBER( vt240_state::test_r ) } -static ADDRESS_MAP_START(vt240_mem, AS_PROGRAM, 8, vt240_state) +// PDF page 78 (4-25) +static ADDRESS_MAP_START( vt240_mem, AS_PROGRAM, 16, vt240_state ) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE (0000000, 0077777) AM_ROM + // 0170xxx MEM MAP/8085 decoder + AM_RANGE (0171000, 0171003) AM_DEVREADWRITE8("i8251", i8251_device, data_r, data_w, 0x00ff) + AM_RANGE (0171004, 0171007) AM_DEVREADWRITE8("i8251", i8251_device, status_r, control_w, 0x00ff) + AM_RANGE (0172000, 0172077) AM_DEVREADWRITE8("duart", mc68681_device, read, write, 0xff) + // 0173000 Video logic + // 0174000 Video logic + // 017500x Video logic + // 0176xxx NVR + // 017700x System comm logic +ADDRESS_MAP_END + +// PDF page 134 (6-9) +static ADDRESS_MAP_START(vt240_char_mem, AS_PROGRAM, 8, vt240_state) ADDRESS_MAP_UNMAP_HIGH - AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("ipl", 0) - AM_RANGE(0x4000, 0x5fff) AM_ROM AM_REGION("ipl", 0x8000) + AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("charcpu", 0) + AM_RANGE(0x4000, 0x5fff) AM_ROM AM_REGION("charcpu", 0x8000) AM_RANGE(0x8000, 0x87ff) AM_RAM ADDRESS_MAP_END -static ADDRESS_MAP_START(vt240_io, AS_IO, 8, vt240_state) +static ADDRESS_MAP_START(vt240_char_io, AS_IO, 8, vt240_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x00, 0x01) AM_DEVREADWRITE("upd7220", upd7220_device, read, write) @@ -135,7 +183,7 @@ INTERRUPT_GEN_MEMBER(vt240_state::vt240_irq) //device.execute().set_input_line(I8085_RST65_LINE, ASSERT_LINE); } -static const gfx_layout vt240_chars_8x8 = +static const gfx_layout vt240_chars_8x10 = { 8,10, RGN_FRAC(1,1), @@ -143,28 +191,31 @@ static const gfx_layout vt240_chars_8x8 = { 0 }, { STEP8(0,1) }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 }, - 8*16 + 8*10 }; static GFXDECODE_START( vt240 ) - GFXDECODE_ENTRY( "ipl", 0x0000, vt240_chars_8x8, 0, 8 ) + GFXDECODE_ENTRY( "charcpu", 0x338*10-2, vt240_chars_8x10, 0, 8 ) GFXDECODE_END -static MACHINE_CONFIG_START( vt240, vt240_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu", I8085A, XTAL_16MHz / 4) +static MACHINE_CONFIG_FRAGMENT( vt240_motherboard ) + MCFG_CPU_ADD("maincpu", T11, XTAL_7_3728MHz) // confirm MCFG_CPU_PROGRAM_MAP(vt240_mem) - MCFG_CPU_IO_MAP(vt240_io) - MCFG_CPU_VBLANK_INT_DRIVER("screen", vt240_state, vt240_irq) + MCFG_T11_INITIAL_MODE(5 << 13) +/* + MCFG_CPU_ADD("charcpu", I8085A, XTAL_16MHz / 4) + MCFG_CPU_PROGRAM_MAP(vt240_char_mem) + MCFG_CPU_IO_MAP(vt240_char_io) + MCFG_CPU_VBLANK_INT_DRIVER("screen", vt240_state, vt240_irq) +*/ - /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(640, 480) MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1) -// MCFG_VIDEO_START_OVERRIDE(vt240_state,vt240) +// MCFG_VIDEO_START_OVERRIDE(vt240_state,vt240) MCFG_SCREEN_UPDATE_DEVICE("upd7220", upd7220_device, screen_update) MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") MCFG_GFXDECODE_ADD("gfxdecode", "palette", vt240) @@ -172,15 +223,43 @@ static MACHINE_CONFIG_START( vt240, vt240_state ) MCFG_DEVICE_ADD("upd7220", UPD7220, XTAL_4MHz / 4) MCFG_DEVICE_ADDRESS_MAP(AS_0, upd7220_map) MCFG_UPD7220_DRAW_TEXT_CALLBACK_OWNER(vt240_state, hgdc_draw_text) + + MCFG_MC68681_ADD("duart", XTAL_3_6864MHz) /* 2681 duart (not 68681!) */ +// MCFG_MC68681_IRQ_CALLBACK(WRITELINE(dectalk_state, dectalk_duart_irq_handler)) + MCFG_MC68681_A_TX_CALLBACK(DEVWRITELINE("rs232", rs232_port_device, write_txd)) +// MCFG_MC68681_B_TX_CALLBACK(WRITELINE(dectalk_state, dectalk_duart_txa)) +// MCFG_MC68681_INPORT_CALLBACK(READ8(dectalk_state, dectalk_duart_input)) +// MCFG_MC68681_OUTPORT_CALLBACK(WRITE8(dectalk_state, dectalk_duart_output)) +// MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr)) +// MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_rts)) + + MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "null_modem") + MCFG_RS232_RXD_HANDLER(DEVWRITELINE("duart", mc68681_device, rx_a_w)) +// MCFG_RS232_DSR_HANDLER(DEVWRITELINE("duart", mc68681_device, ipX_w)) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_START( mc7105, vt240_state ) + MCFG_FRAGMENT_ADD(vt240_motherboard) + + // serial connection to MS7004 keyboard + MCFG_DEVICE_ADD("i8251", I8251, 0) +// MCFG_I8251_RXRDY_HANDLER(DEVWRITELINE("pic8259", pic8259_device, ir1_w)) + + MCFG_DEVICE_ADD("ms7004", MS7004, 0) + MCFG_MS7004_TX_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxd)) + + // baud rate is supposed to be 4800 but keyboard is slightly faster + MCFG_DEVICE_ADD("keyboard_clock", CLOCK, 4960*16) + MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(vt240_state, write_keyboard_clock)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( mc7105 ) - ROM_REGION( 0x10000, "ipl", ROMREGION_ERASEFF ) + ROM_REGION( 0x10000, "charcpu", ROMREGION_ERASEFF ) ROM_LOAD( "027.bin", 0x8000, 0x8000, CRC(a159b412) SHA1(956097ccc2652d494258b3682498cfd3096d7d4f)) ROM_LOAD( "028.bin", 0x0000, 0x8000, CRC(b253151f) SHA1(22ffeef8eb5df3c38bfe91266f26d1e7822cdb53)) - ROM_REGION( 0x20000, "subcpu", ROMREGION_ERASEFF ) + ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD16_BYTE( "029.bin", 0x00000, 0x8000, CRC(4a6db217) SHA1(47637325609ea19ffab61fe31e2700d72fa50729)) ROM_LOAD16_BYTE( "031.bin", 0x00001, 0x8000, CRC(47129579) SHA1(39de9e2e26f90c5da5e72a09ff361c1a94b9008a)) ROM_LOAD16_BYTE( "030.bin", 0x10000, 0x8000, CRC(05fd7b75) SHA1(2ad8c14e76accfa1b9b8748c58e9ebbc28844a47)) @@ -190,14 +269,14 @@ ROM_END /* Driver */ DRIVER_INIT_MEMBER(vt240_state,vt240) { - UINT8 *ROM = memregion("ipl")->base(); + UINT8 *ROM = memregion("charcpu")->base(); /* patch T11 check */ ROM[0x09d] = 0x00; ROM[0x09e] = 0x00; ROM[0x09f] = 0x00; - /* ROM checksum*/ + /* ROM checksum */ ROM[0x15c] = 0x00; ROM[0x15d] = 0x00; ROM[0x15e] = 0x00; @@ -206,4 +285,4 @@ DRIVER_INIT_MEMBER(vt240_state,vt240) /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ //COMP( 1983, vt240, 0, 0, vt220, vt220, driver_device, 0, "Digital Equipment Corporation", "VT240", GAME_NOT_WORKING | GAME_NO_SOUND) //COMP( 1983, vt241, 0, 0, vt220, vt220, driver_device, 0, "Digital Equipment Corporation", "VT241", GAME_NOT_WORKING | GAME_NO_SOUND) -COMP( 1983, mc7105, 0, 0, vt240, vt240, vt240_state, vt240, "Elektronika", "MC7105", GAME_NOT_WORKING | GAME_NO_SOUND) +COMP( 1983, mc7105, 0, 0, mc7105, vt240, vt240_state, vt240, "Elektronika", "MC7105", GAME_NOT_WORKING | GAME_NO_SOUND) -- cgit v1.2.3