I have been fortunate to acquire a Kaypro system that appears to be in
great condition and looks to work.
It looks exactly like this:
Thus, it says Kaypro 1 on the artwork
Still, the sticker on the rear says Kaypro 2, so I'm confused.
In any event, I have no system disks for it (There is a slight
possibility they are part of the stash with which the Kaypro was
bundled, but it's 100 sq ft of stuff). Thus, I'm wondering if there is
a kind soul who might be able to ship me a set of disks. (I'll pay
shipping, of course).
I also am the proud owner of 2 Obsorne machines (one works, the other
seems to have drive issues. They are the redesigned units, but (as I
suspected) the systems disks won't work on the Kaypro.
Jim Brain, Brain Innovations (X)
brain at jbrain.com
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!
A while back, I mentioned that I'd found and potentially fixed the "bricking" problem with the CQD-220.
To recap, for those that werent following, the problem lies in the code for the on-board 8086 when you set the number of both disks and tapes to zero. The 8086, during its routine to load the values from the EEPROM, loads the total number of disks and tapes and executes a loop with a counter predecrement; if the counter is loaded as 0, it effectively runs through the loop 256 times instead of 7 (the max), which spins out of control and blows away some RAM somewhere before crashing.
Fortunately, through a compiler bug or some such, there are 5 bytes available from a totally redundant instruction (loading a value into a register where the same value is already loaded) in just the right place to test the total number of devices and jump to the "uninitialized device table in EEPROM" section of the routine if it is zero. With one byte to spare! (good thing NOP is only a byte in 8086)
This applies to the A7A revision of the ROM, anyway; I haven't gotten to the A8 version yet, though I know it exhibits the same bug. Hopefully it also has the same redundant instruction. In any case, I should be able to find and fix it quickly once I have the time, because I know where to look.
So, here's the thing; I've finally gotten the time to test the fixed ROM image (was temporarily short of 27256 chips, but that's been resolved) and I'd like to get the fixed images somewhere they'll be easy to find if anyone else runs into the same problem (this took me over a year of sporadic attention to fix). Does anyone know where I should post this? There's my own website, which is really not a thing anymore, but there are probably lots of places Google is more likely to find.
Also, are there copyright implications to consider? I know CMD is long gone, but I still worry about these things.
Last thing: does anyone know the difference between the A7A ROM and the A8? I've not found anything different; I assume it's probably an obscure bugfix.
The images are only 64K total, so I shouldn't imagine they'll be bandwidth intensive.
It's running! Telnet to 188.8.131.52 to take a look and help me test it.
You can use the standard Windows telnet program, Putty, Linux, or
whatever you have handy.
Around 10 users can be on at the same time. When you sign on (no
password required) there will be a little menu to help you waste some
time. Some things you can do are see who else is on the server, view the
machine type, ROM BIOS date and DOS version, check the TCP/IP statistics
to see how much traffic it is handling, etc.
There are some upgrades since the last time I ran this test (in Dec 2007):
- The TCP/IP stack is much better
- I'm doing 'telnet' negotiation to figure out the terminal type, turn
echoing on, etc
- Crude line editing has been added
Right now it is running on my PCjr using a Xircom PE3 10BT. I plan to
leave it up as long as it runs, or three days, whichever comes first. It
is a PCjr so if there is a momentary delay, don't panic - it's probably
just doing disk I/O.
Backspace is a little dodgy .. it really wants ASCII 8 and a lot of
terminals and emulators do ASCII 127 instead. Try variations with the
shift and control keys if it doesn't work.
I'm still digging. I found more 550 stuff. I think this is everything
that came with the 550. Here's a chance for you 550 owner's to get the
whole set at one shot!
Original DS-DOS box and invoice.
Original Sanyo Easywriter ver 1.3 disk
Original Sanyo disk box with 550 dos ver 2.11 and BASIC 1.25, two
original Sanyo disk for InfoStar (set B disk 2 and 3 of 4; disks 1 and 4
are below), original Sanyo disk for DOS 1.25 and BASIC ver 1.1
Original Sanyo disk box with all three original disk of set A, WordStar
and CalcStar and a backup copy of DS-DOS.
Two card board dummy disks used to protect the floppy drives duing shipment.
>A few weeks ago we were talking about the Sanyo 550 series and someone
mentioned one of the alternates operating systems that supported 80 track
drives in the 550. I said that was DS-DOS by Michtron.
> Today I found an old Sanyo disk package with four disks for the 550. One
of them is DS DOS 2.11, one is InfoStar, one is MailMerge/SpellStar and the
other is a disk of misc utilities. The first three are original disks. In
additon, the InfoStar, MailMerge/SpellStar are Sanyo labeled disks that
came with the 550. If anyone wants them, trade me something I can use and
they're all your's.
Does anyone have this, willing to sell or --- more ideally,
for me --- willing to trade a SGI IP59 quad-processor CPU/node-
board? (P/N: 030-1989-003)
I have several (non-SGI) systems of interest, Alphas (PWS 500au's
and DS10s), but also Sun SPARCs (e.g. Ultra 10) and also at least
one HP Integrity rx2620 "Montecito" (largely maxed out, with 24
Gbytes RAM) to trade. All of the above are max'ed out, in terms
of 'specs' & configurations, plus there are many (PCI, PCI-X,
AGP, etc.) options available. I also have an IP53 dual-processor
CPU/node-board, as a possible 'replacement' (in case an IP59 board
would have to be removed from a working system) and may even have
a quad-processor one (i.e. the one I currently have installed).
I'd also like to emphasize, to avoid confusion, that these are
things I have to offer. Not so much things I'd like (or deem
sensible) to trade 1:1. The reason I'm looking for this part,
as well as other parts, is because I'm trying to get as much
out of my system as possible, as I'm working on my portfolio
as a graphic designer.
Either way, please don't hesitate to contact me. I'm open to
ideas and offers. Thanks in advance.
Does anyone have a complete set of SGI DMediaPro DM2/DM3 LVDS
cables, willing to trade/sell? (See my other WTT/WTB thread,
for the IP59 board, for possible items of interest to trade.)
I'm specifically looking for both a white (P/N: 018-0985-001)
and black (P/N: 018-0946-001) LVDS cable, to connect a DM3 to
Thanks in advance.