I have found that there is a very specific set of steps to get co/m and MS DOS to boot correctly. Once I found the correct sequence the boot process worked consistently. Here is a page I made about this subject in 2008, maybe it will be useful https://vintagecomputer.net/browse_thread.cfm?id=135 On Tue, Feb 20, 2024, 10:13 AM Didier Derny <didier_at_aida.org> wrote: > thanks to all for your answers... > what differences between 128 and 256 roms ? the use of the memory by the > basic ? > > to tell the truth as soon as I'm sure the machine works I'll buy a 8088 > board :) > I waited 40 years to see this board running.... > the commodore board I had in 1984 when I was lucky I could reach the dos > 1.25 prompt and it immediately failed... > > > Le 20/02/2024 à 14:09, Bill Degnan a écrit : > > I'd look at the CBM 256-80 ROMS, right? > > On Tue, Feb 20, 2024, 6:26 AM Didier Derny <didier_at_aida.org> wrote: > >> Hi All :) >> >> I'm thinking to expand my CBM 610 to 256k >> except installing the ram chip and the decoupling capacitor is there any >> other step needed ? >> jumpers ? >> changing some chip ? >> changing the roms ? >> >> thanks for your advices... >> >> -- >> didier >> >> >> >>Received on 2024-02-20 17:00:11
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