----------------------------- Lode Runner V4 by IREM (1985) ----------------------------- malcor Location Type File ID Checksum ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TB 4K 27256 LR4-V-4K F7FA [ GFX ] TB 2D 27128 LR4-V-2D F352 [ GFX ] TB 2C 27128 LR4-V-2C 5504 [ GFX ] TB 2B 27128 LR4-V-2B 9B06 [ GFX ] MB 4E 27128 LR4-A-4E EF21 [ program ] MB 4D 27128 LR4-A-4D.C 010C [ program ] [ Rev.C ] MB 3F 27128 LR4-A-3F 99D5 [ sound ] MB 3D 27128 LR4-A-3D FD64 [ sound ] LB 3N 27128 LR4-B-3N 5985 [ GFX ] LB 4N 27128 LR4-B-4N 3D80 [ GFX ] LB 4K 27128 LR4-B-4K 7591 [ GFX ] LB 4F 27128 LR4-B-4F 9808 [ GFX ] LB 4E 27128 LR4-B-4E 0D07 [ GFX ] LB 4C 27128 LR4-B-4C 1E5C [ GFX ] TB 1P TBP24S10 LR4-V-1P 0689 TB 1N TBP24S10 LR4-V-1N 086A TB 1M TBP24S10 LR4-V-1M 0935 TB 4H TBP24S10 LR4-V-4H 0DC2 TB 4L PAL16R4A LR4-V-4L 22C8 LB 1N TBP24S10 LR4-B-1N 073D [VID Green] LB 1M TBP24S10 LR4-B-1M 0733 [VID Red ] LB 1L TBP24S10 LR4-B-1L 0675 [VID Blue ] LB 6F TBP24S10 LR4-B-6F 0EB3 LB 5P TBP18S030 LR4-B-5P 0010 Note: TB - Top board (M62-V-A) MB - Middle board (M62-A-B) LB - Lower board (M62-B-C) TBP24S10 is compatible to a AM27S21, MB7114... TBP18S030 is compatible to a AM27S19, MB7112... PLD file is in the JEDEC format Brief hardware overview: ------------------------ Top PCB (M62-V-A), graphics PCB: Processors - Nanao KNA6034201 custom - Nanao KNA6032601 custom - Nanao KNA6032701 custom x2 Middle PCB (M62-A-B), CPU & Sound PCB: Main processor - Z80A Sound Processor - HD6803 - YM2149 x2 (noise & square wave generator) note: There may be useful information contained in the LR4-A-3D ROM image for people trying to emulate the game. Lower PCB (M62-B-C), graphics PCB: Processors - Nanao KNA6034201 custom - Nanao KNA6021901 custom x2 - Custom (security) (old 60 pin PQFP)