On Mon, May 19, 2008 at 12:21:23AM -0700, Josh Dersch wrote:
Picked up an original PET 2001-8 awhile back
that's been heavily (and I
do mean heavily) modified at various points in its history by someone
with very odd design aesthetics. (See pic at
http://yahozna.dyndns.org/scratch/hackedpet.jpg &
http://yahozna.dyndns.org/scratch/hackedpet2.jpg).
That's one crowded PET.
The memory board looks interesting - any idea what was meant to go
in the cartridge slots?
Various parts were hacked in and hot glued (!!) in
place or just left to
dangle. When I got it everything was loose inside. There's an
Expandamem board and some homebrew job with some eproms and some hackery
connected to the internal cassette port.
The cassette ports were common to tap for +5V.
Anyone know what the original power supply capacitor
was for this
thing? I've found parts lists & schematics for the main PCB, video &
voltage regulator but none of them appear to list this. (I'd also be
interested in knowing the transformer specs & wiring, since I'm probably
going to have to rewire that...)
My PETs are at home, but there should be some info in the classiccmp
archives about the transformer - I was asking about the amperages
since I have a couple of bare PET boards with me that I plan to fire up.
--
Ethan Dicks, A-333-S Current South Pole Weather at 20-May-2008 at 11:10 Z
South Pole Station
PSC 468 Box 400 Temp -92.6 F (-69.2 C) Windchill -125.2 F (-87.3 C)
APO AP 96598 Wind 6.3 kts Grid 64 Barometer 670.1 mb (11004 ft)
Ethan.Dicks at
usap.gov http://penguincentral.com/penguincentral.html