[Apr/06/97]


                 Game Plan 'Killer Comet' ROM Image Documentation


   KILLCOM.E1  -  Computer Board location E1
                  2716 (2K x 8)

   KILLCOM.F1  -  Computer Board location F1
                  2716 (2K x 8)

   KILLCOM.G1  -  Computer Board location G1
                  2716 (2K x 8)

   KILLCOM.G2  -  Computer Board location G2
                  2716 (2K x 8)

   KILLCOM.J1  -  Computer Board location J1
                  2716 (2K x 8)

   KILLCOM.J2  -  Computer Board location J2
                  2716 (2K x 8)

   KILLSND.E1  -  Audio Computer Board location E1
                  2716 (2K x 8)

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[MAME]


Killer Comet memory map

MAIN CPU:

Address          Dir Data     Name      Description
---------------- --- -------- --------- -----------------------
00000-xxxxxxxxxx R/W xxxxxxxx RAM       can be either 256 bytes (2x2101) or 1kB (2x2114)
00001-----------              n.c.
00010-----------              n.c.
00011-----------              n.c.
00100-------xxxx R/W xxxxxxxx VIA 1     6522 for video interface
00101-------xxxx R/W xxxxxxxx VIA 2     6522 for I/O interface
00110-------xxxx R/W xxxxxxxx VIA 3     6522 for interface with sound CPU
00111-----------              n.c.
01--------------              n.c.
10--------------              n.c.
11000xxxxxxxxxxx R   xxxxxxxx ROM E2    program ROM
11001xxxxxxxxxxx R   xxxxxxxx ROM F2    program ROM
11010xxxxxxxxxxx R   xxxxxxxx ROM G2    program ROM
11011xxxxxxxxxxx R   xxxxxxxx ROM J2    program ROM
11100xxxxxxxxxxx R   xxxxxxxx ROM J1    program ROM
11101xxxxxxxxxxx R   xxxxxxxx ROM G1    program ROM
11110xxxxxxxxxxx R   xxxxxxxx ROM F1    program ROM
11111xxxxxxxxxxx R   xxxxxxxx ROM E1    program ROM


SOUND CPU:

Address          Dir Data     Name      Description
---------------- --- -------- --------- -----------------------
000-0----xxxxxxx R/W xxxxxxxx VIA 5     6532 internal RAM
000-1------xxxxx R/W xxxxxxxx VIA 5     6532 for interface with main CPU
001-------------              n.c.
010-------------              n.c.
011-------------              n.c.
100-------------              n.c.
101-----------xx R/W xxxxxxxx PSG 1     AY-3-8910
110-------------              n.c.
111--xxxxxxxxxxx R   xxxxxxxx ROM E1

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