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Documented Drive I/O BD commands in Rail Chase 2 [Angelo Salese]
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Angelo Salese
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9521cb7a84
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8b31d67163
@ -475,6 +475,93 @@ static CUSTOM_INPUT( _1c0001c_r )
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return iptval;
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}
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/*
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Rail Chase 2 "Drive I/O BD" documentation
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I'm fairly sure that this is actually controlled by a CPU with undumped program code.
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commands 0x2* are for device status bits (all of them active low)
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command 0x27 (4 port valve rear cylinder)
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---- --xx Cylinder Position (00 - neutral, 01 - up, 10 - down, 11 - error)
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command 0x29
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---- -x-- Compressor Motor
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---- --x- Unloader Valve
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---- ---x Compression Valve
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command 0x2a (4 port valve left cylinder)
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---- -x-- Rev Valve
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---- --x- Down Valve
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---- ---x Up Valve
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command 0x2b (4 port valve right cylinder)
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---- -x-- Rev Valve
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---- --x- Down Valve
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---- ---x Up Valve
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command 0x2e
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---- --xx Compression SW (00 - error, 01 - low, 10 - high, 11 - error)
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command 0x2f
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---- x--- Emergency SW
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---- ---x Safety Sensor
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These are all used on network check, probably some specific data port R/Ws
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command 0x3b
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command 0xe0
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command 0xd0
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command 0xb0
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command 0x70
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command 0x0e
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command 0x0d
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command 0x0b
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command 0x07
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Every other write of this controls devices behaviour:
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command 0x4f (left up valve off)
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command 0x5b (left down valve off)
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command 0x5d (compression valve on)
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command 0x5e (left rev valve on)
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command 0x5f (left Cylinder reset)
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command 0x6f (right up valve off)
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command 0x7b (right down valve off)
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command 0x7d (compression valve on)
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command 0x7e (right rev valve on)
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command 0x7f (right Cylinder reset)
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command 0x84 (reset up/down valves of rear cylinder)
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command 0x85 (rear up valve on)
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command 0x86 (rear down valve on)
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command 0x8b (compression valve on)
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command 0x8d (left rev valve is on)
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command 0x8e (right rev valve is on)
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command 0x8f (reset 4 port valve left / right cylinders and compression valve)
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*/
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static UINT16 cmd_data;
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static CUSTOM_INPUT( rchase2_devices_r )
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{
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return 0xffff;
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}
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static WRITE32_HANDLER( rchase2_devices_w )
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{
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/*
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0x00040000 start 1 lamp
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0x00080000 start 2 lamp
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*/
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if(mem_mask == 0x0000ffff)
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cmd_data = data;
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}
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/*****************************************************************************/
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/* COPRO */
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@ -1638,6 +1725,14 @@ INPUT_PORTS_END
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static INPUT_PORTS_START( rchase2 )
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PORT_INCLUDE( model2 )
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PORT_MODIFY("IN1")
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PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) // 1p shot
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PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) // 2p shot
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PORT_BIT( 0xfffc, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_MODIFY("IN2")
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PORT_BIT( 0xffff, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(rchase2_devices_r, NULL)
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/* FIXME: don't know yet if min max values are really correct, we'll see ... */
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PORT_START("ANA0")
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PORT_BIT( 0x00ff, 0x0000, IPT_AD_STICK_X ) PORT_MINMAX(0x80,0x7f) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_PLAYER(2)
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@ -3614,6 +3709,10 @@ ROM_START( rchase2 ) /* Rail Chase 2 Revision A, Model 2B */
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ROM_REGION( 0x800000, "scsp", 0 ) // Samples
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ROM_LOAD("mpr-18029.32", 0x0000000, 0x200000, CRC(f6804150) SHA1(ef40c11008c75d04159772ad30f02cdb8c5464f3) )
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ROM_LOAD("mpr-18030.34", 0x0400000, 0x200000, CRC(1167615d) SHA1(bae0060aec3c15f08342f11df665c05c5703523d) )
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/* the Drive I/O clearly has a CPU on it (see above) */
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ROM_REGION( 0x1000, "iocpu", 0 )
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ROM_LOAD("drive_io.bin", 0x0000, 0x1000, NO_DUMP )
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ROM_END
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@ -4696,6 +4795,11 @@ static DRIVER_INIT( doa )
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ROM[0x808/4] = 0x08000004;
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}
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static DRIVER_INIT( rchase2 )
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{
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memory_install_write32_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x01c00008, 0x01c0000b, 0, 0, rchase2_devices_w);
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}
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// Model 2 (TGPs, Model 1 sound board)
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GAME( 1993, daytona, 0, model2o, daytona, 0, ROT0, "Sega", "Daytona USA (Japan, Revision A)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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GAME( 1993, daytona93, daytona, model2o, daytona, 0, ROT0, "Sega", "Daytona USA Deluxe '93", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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@ -4743,7 +4847,7 @@ GAME( 1997, zerogunj, zerogun, model2b, model2, zerogun, ROT0, "Psikyo", "Zero
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GAME( 1998, dynamcopb,dynamcop, model2b, model2, genprot, ROT0, "Sega", "Dynamite Cop (Export, Model 2B)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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GAME( 1998, dyndeka2b,dynamcop, model2b, model2, genprot, ROT0, "Sega", "Dynamite Deka 2 (Japan, Model 2B)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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GAME( 1998, pltkids, 0, model2b, model2, pltkids, ROT0, "Psikyo", "Pilot Kids (Model 2B, Revision A)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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GAME( 1995, rchase2, 0, model2b, rchase2,0, ROT0, "Sega", "Rail Chase 2 (Revision A)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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GAME( 1995, rchase2, 0, model2b, rchase2,rchase2, ROT0, "Sega", "Rail Chase 2 (Revision A)", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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// Model 2C-CRX (TGPx4, SCSP sound board)
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GAME( 1996, skisuprg, 0, model2c, model2, 0, ROT0, "Sega", "Sega Ski Super G", GAME_NOT_WORKING|GAME_IMPERFECT_GRAPHICS )
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