diff options
Diffstat (limited to 'src/mame/drivers/dms86.c')
-rw-r--r-- | src/mame/drivers/dms86.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/mame/drivers/dms86.c b/src/mame/drivers/dms86.c new file mode 100644 index 00000000000..c1927ec631f --- /dev/null +++ b/src/mame/drivers/dms86.c @@ -0,0 +1,131 @@ +// 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<cpu_device> m_maincpu; + required_device<generic_terminal_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(); +}; + +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) |