Commodore's PC's were very good, not spectacular by any means but very compatible and of a high build quality. I still have a few (including two laptops) - all work perfectly even now. Solid and reliable machines. On Wed, Oct 19th, 2011 at 8:36 AM, Didier Derny <didier@aida.org> wrote: > Hi, > > Frankly I would have a terrible pleasure to drop a commodore pc > In an active volcano .... > > Commodore and PC ... contradiction the terms... > > Hopefully I stopped working on commodore before I saw this error... euh > horror... > > Lol have fun :=) > > -- > didier > > > -----Message d'origine----- > De : owner-cbm-hackers@musoftware.de > [mailto:owner-cbm-hackers@musoftware.de] De la part de Ruud@Baltissen.org > Envoyé : mardi 18 octobre 2011 21:33 > À : cbm-hackers@musoftware.de > Objet : Hacking a Commodore PC10-III > > Hallo allemaal, > > > Most of the time we are talking about hacking the C64, PET, CBM, > etc. with as latest "victim" the Plus/4. To be very honest, after > twenty years of 6502 I was a bit fed up with all the 6502 related > stuff. And having various Commodore PC's on the shelf doing nothing > at all, I decided to give them a bit more of attention. For > example, I wanted to find a better replacement for onboard harddisk > than the old 20 MB MFM I had. Indeed "had" because it just died two > days ago. So I started to disassemble the BIOSes of the PC 10/20- > III and the PC-1 > > By accident I could lay my hands on a XT-IDE card: > http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=XT-IDE > I equiped it with the XTIDE universal BIOS: > http://code.google.com/p/xtideuniversalbios/ > After some puzzling I was able to replace the original code for the > unusable 8 bits IDE harddisk with the above one. Advantage: now I > can solder the relative simple IO interface W/O the need for the > onboard ROM. > > I attached a 2.5 GB HD and installed MS-DOS 5. FYI: I chose the 2.5 > GB one for the simple reason it made the lessest noise of all > harddisks I have. MS-DOS 5 supports UMB (= upper memory block), > memory between the "famous" 640 KB limit and the maximum of 1 MB. > Something the PC 10-III doesn't have so I added an old IBM memory > expansion card, adding 64 KB in the 0Exxxx area. > But this memory needs to be initialised as well. So I added the > needed routines to the BIOS as well. > > Now I have to install my 23 years old UMB software and see if > things work out fine. I have no doubt here as I have done this 20 > years ago as well but with an IBM AT. > > Next steps: replace the 8088 with a NEC V20 and installing a 8087. > And maybe a VGA card, less original but the original IBM CGA screen > weights about a ton :( > > If interested, all sources are free! > > > Next project: doing the same for my PC-1, just for fun! And then > I'm going to pay attention to my just bought CMD hard disk, which > is 6502 again :). > > > -- > ___ > / __|__ > / / |_/ Groetjes, Ruud Baltissen > \ \__|_\ > \___| http://Ruud.C64.org > > > > > > > > Message was sent through the cbm-hackers mailing list > > > Message was sent through the cbm-hackers mailing list > > Message was sent through the cbm-hackers mailing listReceived on 2011-10-18 23:00:12
Archive generated by hypermail 2.2.0.