Cartridge self-checking: Difference between revisions
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Revision as of 21:33, 1 August 2012
From samsho4, done for all 4 banks in $200000~$2FFFFF:
move #$0FFF,d7 ;Number of times to test until error LAB_0057: move #$0001,$2FFFF0 ;Set P bank 1 cmpi #$0001,$2FFFF0 ;Check if ($2FFFF0) = 1 beq LAB_0058 ;Pass dbf d7,LAB_0057 ;Or loop move #$0048,EXT_0574 ;Fail move.b #$FF,2066(a5) ;Set RAM jmp EXT_01A0 ;Write "WARNING BANK ERROR" and lock LAB_0058:
Also see Slot check security.