// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** P112 Single Board Computer 30/08/2010 Skeleton driver The P112 is a stand-alone 8-bit CPU board. Typically running CP/M (tm) or a similar operating system, it provides a Z80182 (Z-80 upgrade) CPU with up to 1MB of memory, serial, parallel and diskette IO, and realtime clock, in a 3.5-inch drive form factor. Powered solely from 5V, it draws 150mA (nominal: not including disk drives) with a 16MHz CPU clock. Clock speeds up to 24.576MHz are possible. http://members.iinet.net.au/~daveb/p112/p112.html Some of the parts: 32kHz crystal 1 Y2 (RTC crystal) 16MHz crystal 1 Y1 Parallel resonant (CPU clock) 24MHz crystal 1 Y3 Parallel resonant (IO chip clock) 28F256A 1 U4 (Intel Flash ROM, programmed) 74HCT00 1 U5 74ACT02 1 U8 74ACT139 1 U11 62256 2 U2 U3 (Static RAM, 32kB) DS1202 1 U6 (Dallas RTC chip) FDC37C665IR 1 U9 (SMC Super-IO chip) LT1133 2 U7 U10 (Linear Technology RS232 Tx/Rx) NMF0512S 1 U12 (Newport Components Flash ROM power) TL7705ACP 1 U15 (Texas Insts. Reset genr.) Z8018216 1 U1 (Zilog CPU chip) ****************************************************************************/ #include "emu.h" #include "cpu/z180/z180.h" #include "screen.h" class p112_state : public driver_device { public: p112_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } virtual void machine_reset() override; virtual void video_start() override; uint32_t screen_update_p112(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_device m_maincpu; void p112(machine_config &config); void p112_io(address_map &map); void p112_mem(address_map &map); }; void p112_state::p112_mem(address_map &map) { map.unmap_value_high(); map(0x00000, 0x07fff).rom(); map(0x08000, 0xfffff).ram(); } void p112_state::p112_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); } /* Input ports */ static INPUT_PORTS_START( p112 ) INPUT_PORTS_END void p112_state::machine_reset() { } void p112_state::video_start() { } uint32_t p112_state::screen_update_p112(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } MACHINE_CONFIG_START(p112_state::p112) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z180, XTAL(16'000'000)) MCFG_CPU_PROGRAM_MAP(p112_mem) MCFG_CPU_IO_MAP(p112_io) /* 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(240, 320) MCFG_SCREEN_VISIBLE_AREA(0, 240-1, 0, 320-1) MCFG_SCREEN_UPDATE_DRIVER(p112_state, screen_update_p112) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_MONOCHROME("palette") MACHINE_CONFIG_END /* ROM definition */ ROM_START( p112 ) ROM_REGION( 0x20000, "maincpu", ROMREGION_ERASEFF ) ROM_SYSTEM_BIOS( 0, "960513", "ver 13-05-1996" ) ROMX_LOAD( "960513.bin", 0x00000, 0x8000, CRC(077c1c40) SHA1(c1e6b4b0de50bba90f0d4667f9344815bb578b9b), ROM_BIOS(1)) ROM_SYSTEM_BIOS( 1, "970308", "ver 08-03-1997" ) ROMX_LOAD( "970308.bin", 0x00000, 0x8000, CRC(15e61f0d) SHA1(66ba1af7da0450b69650086ab20230390ba23e17), ROM_BIOS(2)) ROM_SYSTEM_BIOS( 2, "4b1", "ver 4b1" ) ROMX_LOAD( "romv4b1.bin", 0x00000, 0x8000, CRC(15d79beb) SHA1(f971f75a717e3f6d59b257eb3af369d4d2e0f301), ROM_BIOS(3)) ROM_SYSTEM_BIOS( 3, "4b2", "ver 4b2" ) ROMX_LOAD( "romv4b2.bin", 0x00000, 0x8000, CRC(9b9a8a5e) SHA1(c40151ee654008b9f803d6a05d692a5a3619a726), ROM_BIOS(4)) ROM_SYSTEM_BIOS( 4, "4b3", "ver 4b3" ) ROMX_LOAD( "romv4b3.bin", 0x00000, 0x8000, CRC(734031ea) SHA1(2e5e5ac6bd17d15cab24a36bc3da42ca49cbde92), ROM_BIOS(5)) ROM_SYSTEM_BIOS( 5, "4b4", "ver 4b4" ) ROMX_LOAD( "romv4b4.bin", 0x00000, 0x8000, CRC(cd419c40) SHA1(6002130d874387c9ec23b4363fe9f0ca78208878), ROM_BIOS(6)) ROM_SYSTEM_BIOS( 6, "5", "ver 5" ) ROMX_LOAD( "051103.bin", 0x00000, 0x8000, CRC(6c47ec13) SHA1(24f5bf1524425186fe10e1d29d05f6efbd3366d9), ROM_BIOS(7)) ROM_SYSTEM_BIOS( 7, "5b1", "ver 5b1" ) ROMX_LOAD( "romv5b1.bin", 0x00000, 0x8000, CRC(047296f7) SHA1(380f8e4237525636c605b7e37d989ace8437beb4), ROM_BIOS(8)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */ COMP( 1996, p112, 0, 0, p112, p112, p112_state, 0, "Dave Brooks", "P112", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)