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Flow Selector#
This unreferenced debug menu allows the player to jump to a specific scene. However, it's missing some setup routine to restore video output after being loaded. This can be workaround by following these steps in MAME's debugger:
- Set a breakpoint with
bpset 800051ca; - Set the next screen index to load with
do r0=0x1e; - Wait until the breakpoint is hit, then resume execution with "Run";
- Open a memory view, then set
0x40000010 = 0x00003207, and0x40000030 = 0x00000000;
MIDI Test#
Another feature used for playing MIDI instruments would likely be reachable from this screen, but was disabled. We can restore it with patch 0x2cb04 = 02 80 94 d0. Afterwards, select the first NULL entry to load this test.
While there's no graphical output, we can observe its state on these memory addresses:
0xc00d0508= Work RAM variable for instrument index;0xc00d050c= Work RAM variable for note number;0x7000000c= I/O address for sending MIDI event;
Controls:
Right/Left |
Increment / Decrement note number, and send "note off" event |
Up/Down |
Increment / Decrement instrument index, and send "program change" event |
Any Red Button |
Send "note on" event |
Left + Right Red Button |
Return to Flow Selector screen |
A list of instruments for each tested channel is stored at file offset 0x2d380. While it seems some instruments are missing on this list, they actually match all available instruments on the console's MIDI synthesizer. Attempting to play other instruments on hardware will just play the next available instrument.
; Channel 0 instruments
8002d380 00 00 00 00 ddw 0h
8002d384 80 02 d0 a0 addr "00Piano1"
8002d388 00 00 00 01 ddw 1h
8002d38c 80 02 d0 ac addr "BPiano1"
8002d390 00 00 00 02 ddw 2h
8002d394 80 02 d0 b4 addr "EGPiano1"
8002d398 00 00 00 04 ddw 4h
8002d39c 80 02 d0 c0 addr "EP1"
8002d3a0 00 00 00 06 ddw 6h
8002d3a4 80 02 d0 c4 addr "Harpsichord"
8002d3a8 00 00 00 0a ddw Ah
8002d3ac 80 02 d0 d0 addr "MBOX"
8002d3b0 00 00 00 0c ddw Ch
8002d3b4 80 02 d0 d8 addr "Marimba"
8002d3b8 00 00 00 0d ddw Dh
8002d3bc 80 02 d0 e0 addr "Xylophone"
8002d3c0 00 00 00 10 ddw 10h
8002d3c4 80 02 d0 ec addr "DOrg"
8002d3c8 00 00 00 13 ddw 13h
8002d3cc 80 02 d0 f4 addr "churchOrg"
8002d3d0 00 00 00 14 ddw 14h
8002d3d4 80 02 d1 00 addr "ReedOrg"
8002d3d8 00 00 00 16 ddw 16h
8002d3dc 80 02 d1 08 addr "Harmonica"
8002d3e0 00 00 00 18 ddw 18h
8002d3e4 80 02 d1 14 addr "NylonGuitar"
8002d3e8 00 00 00 1b ddw 1Bh
8002d3ec 80 02 d1 20 addr "CleanGuitar"
8002d3f0 00 00 00 1c ddw 1Ch
8002d3f4 80 02 d1 2c addr "sGuitar"
8002d3f8 00 00 00 21 ddw 21h
8002d3fc 80 02 d1 34 addr "FingerBass"
8002d400 00 00 00 22 ddw 22h
8002d404 80 02 d1 40 addr "PickBass"
8002d408 00 00 00 24 ddw 24h
8002d40c 80 02 d1 4c addr "SlapBass1"
8002d410 00 00 00 25 ddw 25h
8002d414 80 02 d1 58 addr "SlapBass2"
8002d418 00 00 00 28 ddw 28h
8002d41c 80 02 d1 64 addr "Violin"
8002d420 00 00 00 2a ddw 2Ah
8002d424 80 02 d1 6c addr "Cello"
8002d428 00 00 00 2b ddw 2Bh
8002d42c 80 02 d1 74 addr "ContraB"
8002d430 00 00 00 30 ddw 30h
8002d434 80 02 d1 7c addr "Strings1"
8002d438 00 00 00 31 ddw 31h
8002d43c 80 02 d1 88 addr "Strings2"
8002d440 00 00 00 32 ddw 32h
8002d444 80 02 d1 94 addr "Syn.Strings1"
8002d448 00 00 00 33 ddw 33h
8002d44c 80 02 d1 a4 addr "Syn.Strings2"
8002d450 00 00 00 38 ddw 38h
8002d454 80 02 d1 b4 addr "Trumpet"
8002d458 00 00 00 39 ddw 39h
8002d45c 80 02 d1 bc addr "Trombone"
8002d460 00 00 00 3c ddw 3Ch
8002d464 80 02 d1 c8 addr "FH"
8002d468 00 00 00 41 ddw 41h
8002d46c 80 02 d1 cc addr "AltoSax"
8002d470 00 00 00 44 ddw 44h
8002d474 80 02 d1 d4 addr "Oboe"
8002d478 00 00 00 45 ddw 45h
8002d47c 80 02 d1 dc addr "EnglishHorn"
8002d480 00 00 00 46 ddw 46h
8002d484 80 02 d1 e8 addr "Bassoon"
8002d488 00 00 00 47 ddw 47h
8002d48c 80 02 d1 f0 addr "Clarinet"
8002d490 00 00 00 48 ddw 48h
8002d494 80 02 d1 fc addr "Piccolo"
8002d498 00 00 00 49 ddw 49h
8002d49c 80 02 d2 04 addr "Flute"
8002d4a0 00 00 00 4f ddw 4Fh
8002d4a4 80 02 d2 0c addr "Ocarina"
8002d4a8 00 00 00 50 ddw 50h
8002d4ac 80 02 d2 14 addr "SqrWave"
8002d4b0 00 00 00 51 ddw 51h
8002d4b4 80 02 d2 1c addr "SawWave"
8002d4b8 00 00 00 52 ddw 52h
8002d4bc 80 02 d2 24 addr "L0"
8002d4c0 00 00 00 54 ddw 54h
8002d4c4 80 02 d2 28 addr "L3"
8002d4c8 00 00 00 55 ddw 55h
8002d4cc 80 02 d2 2c addr "L4"
8002d4d0 00 00 00 56 ddw 56h
8002d4d4 80 02 d2 30 addr "L5"
8002d4d8 00 00 00 57 ddw 57h
8002d4dc 80 02 d2 34 addr "Svib"
8002d4e0 00 00 00 58 ddw 58h
8002d4e4 80 02 d2 3c addr "L880"
8002d4e8 00 00 00 61 ddw 61h
8002d4ec 80 02 d2 44 addr "Fx2"
8002d4f0 00 00 00 62 ddw 62h
8002d4f4 80 02 d2 48 addr "L6"
8002d4f8 00 00 00 67 ddw 67h
8002d4fc 80 02 d2 4c addr "Fx"
8002d500 00 00 00 75 ddw 75h
8002d504 80 02 d2 50 addr "MT"
8002d508 00 00 00 79 ddw 79h
8002d50c 80 02 d2 54 addr "noise"
; Channel 9 instruments
8002d510 00 00 00 23 ddw 23h
8002d514 80 02 d2 5c addr "BassDrum1"
8002d518 00 00 00 24 ddw 24h
8002d51c 80 02 d2 68 addr "BassDrum2"
8002d520 00 00 00 25 ddw 25h
8002d524 80 02 d2 74 addr "SideStick"
8002d528 00 00 00 26 ddw 26h
8002d52c 80 02 d2 80 addr "Snare1"
8002d530 00 00 00 27 ddw 27h
8002d534 80 02 d2 88 addr "Snare",81h,"L"
8002d538 00 00 00 28 ddw 28h
8002d53c 80 02 d2 90 addr "Snare2"
8002d540 00 00 00 29 ddw 29h
8002d544 80 02 d2 98 addr "FloorTom_L"
8002d548 00 00 00 2a ddw 2Ah
8002d54c 80 02 d2 a4 addr "Hi_Hat Closed"
8002d550 00 00 00 2b ddw 2Bh
8002d554 80 02 d2 b4 addr "FloorTom_H"
8002d558 00 00 00 2c ddw 2Ch
8002d55c 80 02 d2 c0 addr "Hi_Hat Pedal"
8002d560 00 00 00 2d ddw 2Dh
8002d564 80 02 d2 d0 addr "Low Tom"
8002d568 00 00 00 2e ddw 2Eh
8002d56c 80 02 d2 d8 addr "Hi_Hat Open"
8002d570 00 00 00 2f ddw 2Fh
8002d574 80 02 d2 e4 addr "Mid Tom L"
8002d578 00 00 00 30 ddw 30h
8002d57c 80 02 d2 f0 addr "Mid Tom H"
8002d580 00 00 00 31 ddw 31h
8002d584 80 02 d2 fc addr "Crash Chimbal1"
8002d588 00 00 00 32 ddw 32h
8002d58c 80 02 d3 0c addr "High Tom"
8002d590 00 00 00 33 ddw 33h
8002d594 80 02 d3 18 addr "Ride Cymbal"
8002d598 00 00 00 34 ddw 34h
8002d59c 80 02 d3 24 addr "Chinese Cymbal1"
8002d5a0 00 00 00 35 ddw 35h
8002d5a4 80 02 d3 34 addr "Ride Cymbal Cup"
8002d5a8 00 00 00 36 ddw 36h
8002d5ac 80 02 d3 44 addr "Tambourine"
8002d5b0 00 00 00 37 ddw 37h
8002d5b4 80 02 d3 50 addr "Splash Cymbal"
8002d5b8 00 00 00 38 ddw 38h
8002d5bc 80 02 d3 60 addr "Cowbell"
8002d5c0 00 00 00 39 ddw 39h
8002d5c4 80 02 d3 68 addr "Crash Cymbal 2"
8002d5c8 00 00 00 7f ddw 7Fh
8002d5cc 80 02 d3 78 addr "Noise"