Date: Fri, 17 Jan 2003 16:27:36 -0500 (EST)
Subject: Looking for : Sharp PC-1405
Or equiv (Tandy had them as PC-2 or something, iirc).
The goal of my classic collection is to get one of every computer I've
programmed over the years. One of the first computers I programmed was a
PC-1405 (actually, I can't remember the exact model).
I found one of these in a pawn shop. By brother "stole" it. I found
another. This was my one classic computer that was helluva useful. So
useful I took it with my places. And, well, I've just lost it. I've
checked eBay and there are a few Sharp Pocket Computers, but W@W L@@K @
T3H PR1C3Z! Buy it now for "only" 300 USD!
So, does anyone here have one they don't need and/or would be willing to
let go for a reasonable price?
I've got a PC-1421 Financial Computer if you (or anybody) are interested:
76 character keyboard
16 character display
40K ROM Basic
4.2 Kb RAM
Interface for optional CE-126 Printer/Cassette (don't have)
Basic program mode
Basic run mode
Almost new, in box with cover & 280P manual. Make me an offer (less than
US$ 300, or even CDN$ 300 :).
I'm working with an old data sample (ca. 1979) to a piece of
equipment that I do not have access to. I've identified some bits
and pieces of code and am trying to identify the processor.
Here's what I know. The processor is big-endian and appears to be
byte-addressable. The opcode for CALL appears to be D3 xx xx, where
xxxx is the address of the destination. 2C appears to be load
immediate instruction and is also 3 bytes long.
The code doesn't look tight enough to be a p-code implementation of
Does this ring any bells to anyone?
Last weekend I promised to enable rsync access to the archives
(and mirrors) here.
I've set up the following rsync (no password required) archive sets here:
ftp : Public rsync access to ftp://ftp.trailing-edge.com/ area
pdp-10-tape-images : public rsync access to the PDP-10 tape images,
bitsavers-mirror : public rsync access to my local bitsavers mirror,
Suggested rsync commands would be, for example:
rsync -rlptu -v www.trailing-edge.com::pdp-10-tape-images ./pdp-10-tape-images
rsync -rlptu -v www.trailing-edge.com::ftp ./ftp.trailing-edge.com
rsync -rlptu -v www.trailing-edge.com::bitsavers-mirror ./bitsavers-mirror
Realistically the pdp-10-tape-images and ftp sites don't change often,
butm my bitsavers mirror is kept up to date.
I like to think my outgoing bandwidth (20 Mbit) is pretty much infinite,
this looks like a good way to find out :-)
ftp racks up to 3.5 Gbytes. PDP-10 tapes racks up to 2.2 Gbytes. And
bitsavers-mirror racks up to 126 Gbytes.
From today's (August 24) Wall Street Journal front page:
Written as a bit of a puff piece, but interesting nonetheless, given
the national reach of the WSJ. It might (though I doubt it) spur a
few Wall Street types to take a keener interest in retro gear, making
things dearer and harder for us homie hobbyists to acquire. :)
Kudo's to Ian (King) and Rich (Alderson), et al.
I have a MicroVAX II in a BA123 enclosure and I am experiencing some
problems getting it to see the RD53. Whenever I try to boot I just get the
error DEVOFFLINE and the Ready light on the front panel goes out when this
happens (you can't get it to switch on again if you press the button a few
The RD53 is known to work as it will boot in a MicroVAX 2000. The RQDX3 also
works as I have tested it in a working MicroVAX II (BA23). I have tested the
cable from the RQDX3 to the M9058 distribution board. I have also tested the
cable from the M9058 to the front panel. I have tested the front panel
button and it seems to be right (it shorts two terminals when depressed,
leaving the Open Circuit when it is out). I have swapped the cables from the
distribution board to the drive with another set.
I am starting to suspect that the M9058 is at fault, I don't have a spare to
eliminate this component, but I was wondering if anyone else has seen this
problem and has any suggestions.
I dug my GIGI out of the pile this weekend, during a visit to my stuff
in Kansas City. I notice it is running out 4 bnc's and recall that the
Dec monitor I had at one time had that sort of feed. Is it as easy as 4
of 5 wires (sync on green maybe) to get it going?
I also have an aging cranky 24" Viewsonic which has BNC inputs, but when
it goes poof, I'd love to have this as someething I can still run with
an LED display.
I know there is a GIGI discussion in the archive somewhere and will look
for it to see if it had a monitor discussion associated with it.
I'm in the process of getting a mongrel Sun 3/400 machine running as a host for my Symbolics UX400. The UX400 support software requires SunOS 4.1 which I used to have on CD, but I now appear to have misplaced. (I have a copy of 4.1.4, but it only supports Sun4 machines
Anyone have a copy they could make an image of? (and yes, I've confirmed that this machine will boot from CD.)