I have taken a look at the code in the 8-4032-9 rom dump and whilst it disassembles OK, I haven’t as yet figured out the logic. There is a section which when called (for eg from sys xxxxx,xx,xx,xx) that takes the line, looking for numbers separated by commas… The first sections of the code redirects the "system interrupts" and the next resets it. Will look further over time. The 4K rom is definitely the Command-O rom. Andy > On 29 Dec 2019, at 17:00, Francesco Messineo <francesco.messineo_at_gmail.com> wrote: > > On Sun, Dec 29, 2019 at 4:58 PM Jim Brain <brain_at_jbrain.com> wrote: >> >> On 12/29/2019 8:41 AM, Andy Grady wrote: >>> Frank >>> >>> Both ROMS are installed on $9000 socket >>> >>> The 4K ROM looks identical to the Command-O ROM. Initialise SYS 36864 >>> (I believe) >>> >>> http://www.geocities.ws/davegostelow/PETroms/CmdOAd.jpg >>> >>> Not sure about the other one right now. >>> >>> Andy >> >> Any chance you can dump and send to zimmers? > > I attached the dumps to my first post in the thread. Once we know what > the dumps are, we can send the to zimmers if they aren't yet there. >> >> >> >Received on 2020-05-30 00:01:36
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