// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Digital Microsystems DMS-86 11/01/2010 Skeleton driver. Monitor commands: A B boot to HiNet D dump memory to screen I in port L memory test O out port (e.g. O 84 77) P S write a byte to memory T X display registers Note that bit 3 of port 82 is tested at boot. If low, the computer bypasses the monitor and goes straight to "Joining HiNet". ****************************************************************************/ #include "emu.h" #include "cpu/i86/i86.h" #include "machine/terminal.h" #define TERMINAL_TAG "terminal" class dms86_state : public driver_device { public: dms86_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_terminal(*this, TERMINAL_TAG) { } required_device m_maincpu; required_device m_terminal; DECLARE_READ16_MEMBER( dms86_82_r ); DECLARE_READ16_MEMBER( dms86_84_r ); DECLARE_READ16_MEMBER( dms86_86_r ); DECLARE_READ16_MEMBER( dms86_9a_r ); DECLARE_WRITE8_MEMBER( kbd_put ); UINT8 *m_ram; UINT8 m_term_data; virtual void machine_reset() override; }; READ16_MEMBER( dms86_state::dms86_82_r ) { // HiNet / Monitor switch return 0xff; } READ16_MEMBER( dms86_state::dms86_84_r ) { UINT8 ret = m_term_data; m_term_data = 0; return ret; } READ16_MEMBER( dms86_state::dms86_86_r ) { return 4 | (m_term_data ? 1 : 0); } READ16_MEMBER( dms86_state::dms86_9a_r ) { return 0; } static ADDRESS_MAP_START(dms86_mem, AS_PROGRAM, 16, dms86_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x00000, 0x1ffff) AM_RAM AM_RANGE(0xfe000, 0xfffff) AM_ROM AM_REGION("user1",0) ADDRESS_MAP_END static ADDRESS_MAP_START(dms86_io, AS_IO, 16, dms86_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x82, 0x83) AM_READ(dms86_82_r) AM_RANGE(0x84, 0x85) AM_READ(dms86_84_r) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0xff) AM_RANGE(0x86, 0x87) AM_READ(dms86_86_r) AM_RANGE(0x9A, 0x9B) AM_READ(dms86_9a_r) AM_RANGE(0x9c, 0x9d) AM_DEVWRITE8(TERMINAL_TAG, generic_terminal_device, write, 0xff) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( dms86 ) INPUT_PORTS_END void dms86_state::machine_reset() { } WRITE8_MEMBER( dms86_state::kbd_put ) { m_term_data = data; } static MACHINE_CONFIG_START( dms86, dms86_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",I8086, XTAL_9_8304MHz) MCFG_CPU_PROGRAM_MAP(dms86_mem) MCFG_CPU_IO_MAP(dms86_io) MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0) MCFG_GENERIC_TERMINAL_KEYBOARD_CB(WRITE8(dms86_state, kbd_put)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( dms86 ) ROM_REGION( 0x2000, "user1", ROMREGION_ERASEFF ) ROM_LOAD16_BYTE( "hns-86_54-8678.bin", 0x0000, 0x1000, CRC(95f58e1c) SHA1(6fc8f087f0c887d8b429612cd035c6c1faab570c)) ROM_LOAD16_BYTE( "hns-86_54-8677.bin", 0x0001, 0x1000, CRC(78fad756) SHA1(ddcbff1569ec6975b8489935cdcfa80eba413502)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1982, dms86, 0, 0, dms86, dms86, driver_device, 0, "Digital Microsystems", "DMS-86", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)