Hello all.
I picked up this morning a VAXstation 4000/60 from the local recycling
center's computer dumpster. I could not find the monitor or keyboard. Is
there any way to make a VGA monitor, and PS/2 Keyboard/mouse work on this
machine?
Thanks
Joe Giliberti
Hiya,
Folk are welcome to the following for the cost of postage (from Canberra, Australia or Austin, TX if you don't mind waiting an extra couple of weeks)
Two new 3Com EtherLink SE 3C563 cards - 10Base-T and AUI port 10Mbit for Mac SE
Dozen or so original AppleTalk interfaces - DB9 male at one end, 3 pin Appletalk connector at the other. Have a bunch of 3pin-3pin Appletalk cables too - 6ft long.
Please contact me off list if of interest, goes into recycling in a weeks time otherwise :)
Cheers,
Hugh
I require a Macintosh IIx. Not a II, not a IIfx, nor a IIcx nor IIci, but
a IIx.
If you have one and wish to sell it, please contact me ASAP.
Any physical/cosmetic condition (within reason, i.e. nothing that's been
through a crusher) is acceptable. It need not be functional.
Thanks!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
P.S. The folly of storing cassette data in MP3 format has been discussed
here in detail before.
DON'T DO IT.
Use WAV only.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
I have been asked to find some TU-58 drives and tapes.
The drive would need to be the external dual TU-58 with an RS-232 header
interface (of 10 pins).
Does anyone have any to spare? Does anyone have any price estimates as
to how much they cost these days?
Please contact me off list if you have any that are actually available.
Sincerely yours,
Jerome Fine
All,
I finally finished my Obtronix Apple 1 reproduction!
Actually,
building the Apple 1 didn't take much time at all! It was the custom
work on the mounting board, the curved and angled plastic leg brackets,
and, and ...
I uploaded photos of it to
http://www.vintage-computer.com/vcforum/album.php?u=6611
I also have a request:
My
Obtronix Apple 1 reproduction had a bad Signetics 2504v. I don't think
it was DOA (I believe it just "developed" the problem recently).
The Signetics 2504v is a 1024-bit dynamic shift register, 8-pin dip. It's used here to as part of the display control. The problem I saw was odd numbers (1,3,5,7,9,A,C,E) in every other screen column were displayed as the preceding ASCII character (0,2,4,6,8,@,B,D). Data from the keyboard was stored correctly in main RAM. The video memory problem just displayed it incorrectly.
Anyway,
does anyone have a source of a Signetics 2504v? Or possibly, is there
other more readably available junk-hardware-for-parts that I could pull a 2504v?
Thanks!
Scott Austin
A fascinating little blog entry on the Apple I BASIC (4K), converted from an
MP3 of the tape. Includes code and the 4K binary.
http://www.pagetable.com/?p=32
--
------------------------------------ personal: http://www.cameronkaiser.com/ --
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- I may have invented CtrlAltDel, but Microsoft made it popular. -- D. Bradley
Jim Beacon asks:
> whilst reading my 11/45 processor manual the other
> night, I came across the statement that, if Unibus A and
> B are separated, Unibus B can be used for inter-processor
> links, so long as one of the connected devices is a Unibus controller.
I and John Wilson had wondered about this in the past, and in 2001
John Holden mentioned the following in vmsnet.pdp-11:
> Tom Uban wrote:
>> The 11/45 processor handbook talks about the utility of a multiprocessor
>> system, considering the dual UNIBUS architecture and fast/slow memory
>> scheme.
>> I know that many discussions have gone by about a multiprocessor 11/70,
>> but did DEC ever make (internally?), produce, or sell a multiprocessor
>> 11/45 system?
>> Did anyone in put a pair (or more) of 11/45's together on their own?
> I had an 11/45 with a 11/20 front end, but it gets tricky. You can
> only
> separate the two Unibuses (unbusi?) if you have fastbus memory. The
> controllers were dual ported, one to unibus B and the other a direct
> path to the processor. Unibus A was always used by the processor, and
> had the bus arbitration logic. Unibus B had no such logic, and was
> used
> for DMA transfers from peripherals to the fastbus memory.
> If you separate the buses (just remove a jumper), and run a second
> processor on Unibus B there is a problem. The second processor and
> its peripherals have full access to the fastbus memory (only), but the
> peripherals on the 11/45 had no access.
> In my case using an 11/20 (which doesn't have memory management) the
> fastbus memory has to be strapped into the first 56Kb of memory. The
> DMA
> devices on the 11/45 couldn't have access to this memory, so I had to
> write a special bootstrap loader that buffered data in normal memory,
> then transferred it to the fastbus segment.
> A different hardware solution was the 'Unibus Window', where you could
> transparently map chunks of memory (or peripherals) between to
> unibus machines.
Can anybody tell me a rough estimate of what a Northstar Advantage would be
worth? I believe it has one floppy and a HD in it (definitely not dual
floppies).
