Re: 9060/9090

From: A. Fachat <>
Date: Wed, 25 Dec 2013 09:21:14 +0100
Message-ID: <>
If you want to read out the ROM of this FDC controller CPU I have a small 
program on my petindex site in the drives section to do this. At least it 
worked for the IEEE488 floppy drives.
If it doesn't already exist on the web. On my site IIRC I have a 
disassembly of the floppy FDC ROM - maybe a guidance for the HDC ROM

Link if needed later.


Am 25. Dezember 2013 04:38:31 schrieb Ethan Dicks <>:

> There are two sets of firmware in there (two CPUs).  One talks to the PET
> via IEEE and understand CBM DOS commands, the other talks to the SASI
> board, and they have a patch of SRAM for shared data.
> > Any idea if a source code exist for this rom ?
> > I would like to extract the sasi commend really send by this board

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Received on 2013-12-25 09:00:08

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