// license:MAME // copyright-holders:Miodrag Milanovic, Robbbert /*************************************************************************** PC/M by Miodrag Milanovic http://www.li-pro.net/pcm.phtml (in German) 12/05/2009 Preliminary driver. 14/02/2011 Added keyboard (from terminal). Commands: 1 select memory bank 1 2 select memory bank 2 B C start cp/m from the inbuilt CCP D Debugger Fx Format disk A or B G Jump to address I List files on tape L filename.typ Load file from tape R read from disk S filename aaaa / bbbb save a file to tape V verify W write to disk X Z set tape baud (1200, 2400, 3600 (default), 4800) filename start running this .COM file Therefore if you enter random input, it will lock up while trying to load up a file of that name. Filenames on disk and tape are of the standard 8.3 format. You must specify an extension. Here is an example of starting the debugger, executing a command in it, then exiting back to the monitor. D U E In practice, the I and R commands produce an error, while all disk commands are directed to tape. The F command lists the files on a tape. ToDo: - Add bankswitching - Add NMI generator - Find out if there really is any floppy-disk feature - the schematic has no mention of it. - Add the 6 LEDs. ****************************************************************************/ #include "emu.h" #include "machine/z80ctc.h" #include "machine/z80pio.h" #include "machine/z80dart.h" #include "cpu/z80/z80.h" #include "cpu/z80/z80daisy.h" #include "imagedev/cassette.h" #include "sound/speaker.h" #include "sound/wave.h" #include "machine/k7659kb.h" class pcm_state : public driver_device { public: pcm_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_pio_s(*this, "z80pio_s"), m_pio_u(*this, "z80pio_u"), m_sio(*this, "z80sio"), m_ctc_s(*this, "z80ctc_s"), m_ctc_u(*this, "z80ctc_u"), m_speaker(*this, "speaker"), m_cass(*this, "cassette"), m_p_videoram(*this, "videoram"){ } required_device m_maincpu; required_device m_pio_s; required_device m_pio_u; required_device m_sio; required_device m_ctc_s; required_device m_ctc_u; required_device m_speaker; required_device m_cass; DECLARE_READ8_MEMBER( pcm_85_r ); DECLARE_WRITE_LINE_MEMBER( pcm_82_w ); DECLARE_WRITE8_MEMBER( pcm_85_w ); UINT8 *m_p_chargen; bool m_cone; required_shared_ptr m_p_videoram; virtual void machine_reset(); virtual void video_start(); UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); private: UINT8 m_85; }; WRITE_LINE_MEMBER( pcm_state::pcm_82_w ) { if (state) { m_cone ^= 1; m_speaker->level_w(m_cone); } } /* PIO connections as far as i could decipher PortA is input and connects to the keyboard PortB is mostly output and connects to a series of LEDs, but also carries the cassette control & data lines. A0-A6 ascii codes from the keyboard A7 strobe, high while a key is pressed B0 power indicator LED B1 Run/Stop LED B2 Sound on/off LED B3 n/c B4 High=Save, Low=Load LED B5 Motor On LED B6 Save data B7 Load data There is also a HALT LED, connected directly to the processor. */ READ8_MEMBER( pcm_state::pcm_85_r ) { UINT8 data = m_85 & 0x7f; if ((m_cass)->input() > 0.03) data |= 0x80; return data; } WRITE8_MEMBER( pcm_state::pcm_85_w ) { if (BIT(data, 5)) m_cass->change_state(CASSETTE_MOTOR_ENABLED,CASSETTE_MASK_MOTOR); else m_cass->change_state(CASSETTE_MOTOR_DISABLED,CASSETTE_MASK_MOTOR); m_cass->output( BIT(data, 6) ? -1.0 : +1.0); m_85 = data; } static ADDRESS_MAP_START(pcm_mem, AS_PROGRAM, 8, pcm_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0x1fff ) AM_ROM // ROM AM_RANGE( 0x2000, 0xf7ff ) AM_RAM // RAM AM_RANGE( 0xf800, 0xffff ) AM_RAM AM_SHARE("videoram") // Video RAM ADDRESS_MAP_END static ADDRESS_MAP_START(pcm_io, AS_IO, 8, pcm_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x80, 0x83) AM_DEVREADWRITE("z80ctc_s", z80ctc_device, read, write) // system CTC AM_RANGE(0x84, 0x87) AM_DEVREADWRITE("z80pio_s", z80pio_device, read, write) // system PIO AM_RANGE(0x88, 0x8B) AM_DEVREADWRITE("z80sio", z80sio0_device, cd_ba_r, cd_ba_w) // SIO AM_RANGE(0x8C, 0x8F) AM_DEVREADWRITE("z80ctc_u", z80ctc_device, read, write) // user CTC AM_RANGE(0x90, 0x93) AM_DEVREADWRITE("z80pio_u", z80pio_device, read, write) // user PIO //AM_RANGE(0x94, 0x97) // bank select //AM_RANGE(0x98, 0x9B) // NMI generator //AM_RANGE(0x9C, 0x9F) // io ports available to the user // disk controller? ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( pcm ) INPUT_PORTS_END void pcm_state::machine_reset() { } void pcm_state::video_start() { m_p_chargen = memregion("chargen")->base(); } UINT32 pcm_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx; UINT16 sy=0,ma=0x400,x; for (y = 0; y < 16; y++) { for (ra = 0; ra < 8; ra++) { UINT16 *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 64; x++) { chr = m_p_videoram[x]; gfx = m_p_chargen[(chr<<3) | ra]; *p++ = BIT(gfx, 7); *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); *p++ = BIT(gfx, 0); } } ma+=64; } return 0; } static const z80_daisy_config pcm_daisy_chain[] = { { "z80ctc_s" }, /* System ctc */ { "z80pio_s" }, /* System pio */ { "z80sio" }, /* sio */ { "z80pio_u" }, /* User pio */ { "z80ctc_u" }, /* User ctc */ { NULL } }; /* F4 Character Displayer */ static const gfx_layout pcm_charlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( pcm ) GFXDECODE_ENTRY( "chargen", 0x0000, pcm_charlayout, 0, 1 ) GFXDECODE_END static MACHINE_CONFIG_START( pcm, pcm_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL_10MHz /4) MCFG_CPU_PROGRAM_MAP(pcm_mem) MCFG_CPU_IO_MAP(pcm_io) MCFG_CPU_CONFIG(pcm_daisy_chain) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_UPDATE_DRIVER(pcm_state, screen_update) MCFG_SCREEN_SIZE(64*8, 16*8) MCFG_SCREEN_VISIBLE_AREA(0, 64*8-1, 0, 16*8-1) MCFG_SCREEN_PALETTE("palette") MCFG_GFXDECODE_ADD("gfxdecode", "palette", pcm) MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") /* Sound */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) /* Devices */ MCFG_K7659_KEYBOARD_ADD() MCFG_CASSETTE_ADD("cassette") MCFG_DEVICE_ADD("z80pio_u", Z80PIO, XTAL_10MHz/4) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_DEVICE_ADD("z80pio_s", Z80PIO, XTAL_10MHz/4) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_Z80PIO_IN_PA_CB(DEVREAD8(K7659_KEYBOARD_TAG, k7659_keyboard_device, read)) MCFG_Z80PIO_IN_PB_CB(READ8(pcm_state, pcm_85_r)) MCFG_Z80PIO_OUT_PB_CB(WRITE8(pcm_state, pcm_85_w)) MCFG_Z80SIO0_ADD("z80sio", 4800, 0, 0, 0, 0) // clocks come from the system ctc MCFG_DEVICE_ADD("z80ctc_u", Z80CTC, XTAL_10MHz /4) MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_DEVICE_ADD("z80ctc_s", Z80CTC, XTAL_10MHz /4) MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) // ZC0 : SIO channel A clock // ZC1 : SIO channel B clock MCFG_Z80CTC_ZC2_CB(WRITELINE(pcm_state, pcm_82_w)) // speaker MACHINE_CONFIG_END /* ROM definition */ ROM_START( pcm ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_SYSTEM_BIOS( 0, "v202", "Version 2.02" ) ROMX_LOAD( "bios_v202.d14", 0x0000, 0x0800, CRC(27c24892) SHA1(a97bf9ef075de91330dc0c7cfd3bb6c7a88bb585), ROM_BIOS(1)) ROMX_LOAD( "bios_v202.d15", 0x0800, 0x0800, CRC(e9cedc70) SHA1(913c526283d9289d0cb2157985bb48193df7aa16), ROM_BIOS(1)) ROMX_LOAD( "bios_v202.d16", 0x1000, 0x0800, CRC(abe12001) SHA1(d8f0db6b141736d7715d588384fa49ab386bcc55), ROM_BIOS(1)) ROMX_LOAD( "bios_v202.d17", 0x1800, 0x0800, CRC(2d48d1cc) SHA1(36a825140124dbe10d267fdf28b3eacec6f6d556), ROM_BIOS(1)) ROM_SYSTEM_BIOS( 1, "v210", "Version 2.10" ) ROMX_LOAD( "bios_v210.d14", 0x0000, 0x0800, CRC(45923112) SHA1(dde922533ebd0f6ac06d25b9786830ee3c7178b9), ROM_BIOS(2)) ROMX_LOAD( "bios_v210.d15", 0x0800, 0x0800, CRC(e9cedc70) SHA1(913c526283d9289d0cb2157985bb48193df7aa16), ROM_BIOS(2)) ROMX_LOAD( "bios_v210.d16", 0x1000, 0x0800, CRC(ee9ed77b) SHA1(12ea18e3e280f2a0657ff11c7bcdd658d325235c), ROM_BIOS(2)) ROMX_LOAD( "bios_v210.d17", 0x1800, 0x0800, CRC(2d48d1cc) SHA1(36a825140124dbe10d267fdf28b3eacec6f6d556), ROM_BIOS(2)) ROM_SYSTEM_BIOS( 2, "v330", "Version 3.30" ) ROMX_LOAD( "bios_v330.d14", 0x0000, 0x0800, CRC(9bbfee10) SHA1(895002f2f4c711278f1e2d0e2a987e2d31472e4f), ROM_BIOS(3)) ROMX_LOAD( "bios_v330.d15", 0x0800, 0x0800, CRC(4f8d5b40) SHA1(440b0be4cf45a5d450f9eb7684ceb809450585dc), ROM_BIOS(3)) ROMX_LOAD( "bios_v330.d16", 0x1000, 0x0800, CRC(93fd0d91) SHA1(c8f1bbb63eca3c93560622581ecbb588716aeb91), ROM_BIOS(3)) ROMX_LOAD( "bios_v330.d17", 0x1800, 0x0800, CRC(d8c7ce33) SHA1(9030d9a73ef1c12a31ac2cb9a593fb2a5097f24d), ROM_BIOS(3)) ROM_REGION(0x0800, "chargen",0) ROM_LOAD( "charrom.d113", 0x0000, 0x0800, CRC(5684b3c3) SHA1(418054aa70a0fd120611e32059eb2051d3b82b5a)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1988, pcm, 0, 0, pcm, pcm, driver_device, 0, "Mugler/Mathes", "PC/M", 0)