Ruud Baltissen wrote: > > > One genearl question remains: What happens if the processor of a PET or > > > 1541 runs out of phase with the onboard clock or even at a (slightly) > > > different speed? In case of the PET I think of the video and in case of the > > > 1541 I think of the I/O for reading from/writing to the disk. > > > > I'm not sure what happens with a PET, but I just happened to read an > > article last night about an upgrade for the old SpeedDos system for the > > 1541/C64. Basicly, all it did was doing the GCR decoding in hardware > > instead of software, and speedup the processor to 2MHz while doing > > disk I/O. I'll lookup the article for you (but since I won't have > > any internet connection for the next week or so, that'll take a while :) > > > > I believe it was called something like "Professional DOS pro" > > Nog gevonden? Yeah, but it didn't provide more information than the above, basicly. There was a small picture next to it (a small daughterboard for the processor with some glue logic and the extra crystal, if memory serves me right). I might send you a copy of it, if you're still interested -- Fight Spam! Join CAUCE! == http://www.cauce.org/ Martijn van Buul, firstname.lastname@example.org Tijntje@OuterSpace - 22.214.171.124 3333 - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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