Re: CBM's CP/M, Z-80 carts for the 64

From: silverdr_at_wfmh.org.pl
Date: Wed, 19 Dec 2012 22:09:26 +0100
Message-Id: <CBDEB8F6-9519-4318-8345-30F4FCC2CF3B@wfmh.org.pl>
> On 19/12/2012 12:47, silverdr@wfmh.org.pl wrote:
>> Do I recall correctly that those carts were unreliable / unstable? Also, wikipedia states: [..] the cartridges only worked on early-model C64s from 1982 and were incompatible with later units [..] What do the authors mean there?

On 2012-12-19, at 14:35, didier derny wrote:
> I saw a few between 1984-1985...
> none really worked...
> in the best case it started and crashed after a few minutes...

On 2012-12-19, at 15:48, Craig Taylor wrote:
> I have been able to get the C64 CP/M cart working on a flat C128 (stock powersupply / just as an experiment).   It ran reliably but I didn't spend that much time with it due to the how _very_slow_ it was... 

On 2012-12-19, at 16:11, Steve Gray wrote:
> I have one and it does work on the C64. I tested with a breadbin 64 but I can't tell you how "early" the machine was.
> If anyone is REALLY TRUELY interested, I have lots of C64's I can test on ;-)

On my wide (250425) board though I encountered the "best case" described by didier. I was wondering whether my cart is broken or something. Then I vaguely recalled a discussion about stability of the cart. I tried it on the narrow board (according to some sources on which it should not work at all) and it seemed to work. At least I could boot and issue some commands for several minutes. And I still wonder what is the reason. Especially that it seemed to work on the latest board. Maybe I should leave it overnight..

-- 
SD!
       Message was sent through the cbm-hackers mailing list
Received on 2012-12-19 22:00:03

Archive generated by hypermail 2.2.0.