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Notes:Raiden Trad (Genesis)
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This page contains notes for the game Raiden Trad (Genesis).
Free
Options
The programming for setting the difficulty in options is located at 000848-00087D. It allows only three settings: FFC026:00 - EASY, FFC026:01 - NORMAL, and FFC026:02 - HARD. There's nothing to suggest a FFC026:03 - FREE setting.
controller check 00:0848 08 00 BTST #2,D0 //check d-pad left 00:084C 67 10 BEQ #$10 [00:085E] //goto 00085E if not pressed d-pad left pressed 00:084E 53 39 SUBQ.B #1,($00FFC026) //lower difficulty setting 00:0854 6A 26 BPL #$26 [00:087C] //goto 00087C exit if difficulty is not on EASY rollover, set HARD difficulty 00:0856 13 FC MOVE.b #$02,($00FFC026) //HARD controller check 00:085E 08 00 BTST #3,D0 //check d-pad right 00:0862 67 18 BEQ #$18 [00:087C] //goto 00087C if not pressed d-pad right pressed 00:0864 52 39 ADDQ.B #1,($00FFC026) //raise difficulty setting 00:086A 0C 39 CMPI.B #$02,($00FFC026) //check if difficulty is HARD 00:0872 6F 08 BLE #$08 [00:087C] //goto 00087C if difficulty is not on HARD rollover, set EASY difficulty 00:0874 13 FC MOVE.b #$00,($00FFC026) //EASY exit 00:087C 4E 75 RTS
Gameplay
In game, FFC026:03 is checked for.
00:2C90 12 39 MOVE.b ($00FFC026),D1 00:2C96 C2 3C AND.B #$03,D1 00:2C9A B2 3C CMP.B #$03,D1 00:2C9E 66 04 BNE #$04 [00:2CA4] 00:2CA0 12 3C MOVE.b #$02,D1 // ??? effect 00:2CA4 E4 19 ROR.B #2,D1 00:2CA6 80 01 OR.B D1,D0 00:2CA8 13 C0 MOVE.b D0,($00FFE9AF) 00:2CAE 53 79 SUBQ.W #1,($00FFE99A) 00:2CB4 66 06 BNE #$06 [00:2CBC]
