From: David Wood (jbevren_at_starbase.globalpc.net)
Date: 2008-03-19 04:45:38
[Top posted reply, sorry in advance] The idea of running cp/m concurrently with a 6502 host isn't new. http://mylinuxisp.com/~jdbaker/oldsite/SmallSys/AppliCard.html The link above contains information about an apple2 card that hosts a z80, its own ram, and a bus interface between the cp/m system and the host system. In concept, the BIOS runs on the 6502 concurrently with CP/M on the AppliCard. This would allow any device supported by the host system to be used by the CP/M system, i.e. disks, network, console, printer, serial.. -jbevren On Tue, 18 Mar 2008 email@example.com wrote: > Hallo allemaal, > > > I found some old Z80 operated printer buffers. These are nothing more > then a Z80 CPU, some I/O to communicate with the printer(s) and the > attached computers, quite some RAM (256 KB IIRC) and the needed > glue-logic. I lately also got a CP/M box for the BBC. This is nothing > more then a 6522 and all the things mentioned above (although only 64 KB > RAM). > > Attaching a 6522 (or 6526) to whatever Commodore shouldn't be a problem. > Finding a printer buffer with a Z80 could be a problem. But IMHO an old > obselete MSX or CPC-64/128 can do the trick as well. The advantage of > such a system is that during debugging messages can be displayed on the > screen. > > Next step is the software of course: a BIOS for the Z80 part and a > driver (by lack of another name) for the 6502. Maybe I can take the BIOS > of the BBC-Z80 card as base. > > Is there any interest in this? > > And don't worry, I first finish 1541IDE :) > > > -- > ___ > / __|__ > / / |_/ Groetjes, Ruud > \ \__|_\ > \___| URL: Ruud.C64.org > > > > De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij overgebrachte virussen. > > APG NV te Heerlen is ingeschreven in het handelsregister Limburg onder nummer 14099617. > > > The information contained in this e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail; please delete in this case the e-mail and do not disclose its contents to any person. We don't accept liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission. > > APG NV, Heerlen, is registered in the trade register Limburg, The Netherlands no. 14099617. > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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