ACA1221 maprom kickstart 3.1 red screen

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Don't Panic. Please wash hands.
  • I have aca1221 with license for maprom function.

    I try to load kickstart 3.1 with maprom function but i see a red screeen flash.

    The rom work in emulator winuae and the rom 1.3 or 2.0 work with maprom.

    Can you help me?

  • Red screen normally means that some checksum in the Kickstart is not correct.


    I have a hard time believing that the memory chips are at fault, as in all the years we've been making accelerators, not a single memory chip has gone defective. I'd look for the error in the Kick3.1 file - is that *exactly* 524288 bytes?

  • i have solved with aca1221 red screen after maprom kickstart 3.1

    i have copyed acamaprom and rom kickstart 3.1 into ram:

    after i have execute the command from ram:


    after with 3.1 kickstart for loading workbench from CF i have removed jumper

    from ide adapter (it's like cutting red pin 1 in the cable)