MagerValp wrote:
>
> I picked up what I thought was a PET 2001 at a local flea market
> today. Now that I'm home I realize that it's a PET 200, aka 8032-SK,
> with a dual 8050 disk drive and an 8023P printer, complete with all
> cables and in perfect working condition. This is great :)
Very great. Congradulations!
> A few
> questions that some of you may be able to answer:
>
> What kind of disks should I use in the 8050? Are normal 5.25" 48 TPI
> DSDD disks OK? It formatted them OK but I haven't done any real
> testing.
The disks used on the 8050 and 8250 were "Quad Density" disks which are
somewhere between double density and high density, and are not too
common to locate nowadays. If you find a Commodore 4040, 2031 or MSD
SD-1 or SD-2, you may want to get it, they are format comaptible with
the Commodore 1540/1541/1571 (VIC/64/+4/128) drives and makes file
transferring much less of a pain.
> With it came manuals for the disk drive, the printer and BASIC 4.0,
> but no documentation for the main unit (you know, the "plug in that
> cable there" manual :). Is that manual missing?
My PET FAQ may have some answers (at least the port locations):
http://www.goldrush.com/~foxnhare/petfaq.html
> Which chip is used for generating the display? 6545? I couldn't find
> one on the motherboard, but I didn't look very hard. There was a
> hitachi IC called HD46505 -- could this be it?
Programming the PET/CBM say's it should be a Motorola's MC 6845
> Whas there ever a PET Programmers Reference Guide? If so, does
> anyone on the list have a copy of it?
Programming the PET/CBM by Raeto Colin West, COMPUTE! Books, PET
Revealed by Nick Hampshire, Nick Hampshire Publications, The Complete
Commodore Innerspace Anthology by Transactor Publications, PET Personal
Computer Guide (3rd edition is the best one) By Adam Osborne, Jim and
Ellen Strasma, Osborne/McGraw Hill. (There are more but those are some
of the best reference works, Especially the first two!)
> There appears to be two casette interfaces -- is this the case?
> Hardly useful, is it?
Yep, Two cassette ports, back then Disk Drives were something like $500
for a single and $1000 for a dual drive, so cassette storage was a more
popular and vastly cheaper alternative.
> More to come...
Bring 'Em On!
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