PDP paper tape - PC04/PC05 (offer to trade)! - test-drb@ccmp.vtda.org

2 Feb 1999

You wrote...
...
 Just checking that my 8/e and PC0'4' (converted
from a PC05) are still
here.. Yes, they are ;-) 

Yeah, there's been a rash of disappearences, some have reported suspicious
18-wheeler trucks parked in peoples back yards with 12 people moving
computer gear ;)

...
 That's probably my info - I converted a PC05 into a
PC04 because I
couldn't get the real thing either. 

Why yes, now that I look it is. Kudo's to you BTW - it's a very nice clean
mod. I will do it if I have to, but wanted to check around for the "real
thing". There's just something heartsinking about taking a dremmel tool to
the front of my PC05 :)

One question though - why is the switch needed anyway (I never used the real
thing before)? It would seem to me that the PC05 arrangement where power is
turned on when data is sent works fine - why put a switch on it? If the
switch isn't needed for easy access, it could always be put on the rear or
out of site.

...
 You do need to get the DEC Omnibus -> PC04 interface
(M840???). That's
the only hard thing to find. The other flip-chip card is quite common. 

Yup - the previous owner didn't have that either. I'm still hunting for the
module, but quite determined.

...
 I suppose the other thing to find would be a
'junker' PC04 and use the
backplane and switch PCB + bezel (and rear label if you really want to be
correct) to convert yours without any real changes. The punch and reader
mechanisms, many of the cards, PSU, etc are the same. 

True. I'll keep looking for a bit still... THANKS!

PS - I hope you didn't mind but someone on the list asked me for a copy of
the PC05/4 mod, so I passed on your email address. I apologize in advance if
youd've preferred me not to.

Regards,

Jay West