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