It is with some sadness to here of Skype's demise even though MS owned it.
It's not necessarily on topic of 'ancient' personal computing but then
again maybe it is!
Happy computing,
Murray 🙂
I have some more thing to move out of my shop.
These are in Kent Washington. most are too big to ship.
Hp 1000f 2117f computer. Lots of boards. Unknown condition. looks good. 400.00Hp 2753a Paper Tape 100.00Hp 7906 drive 200.00
HP 7970e Tape HPIB interface in cabinet 100.00HP 7970B tape 50.00
HP 9000/380 in Desk side Cabinet with drives and Hi-Res graphics 250.00
Intel 310 development system 200.00
General Automation computer 100.00
HP K-210 server works with drives in a Rack Free
Sun 4-260 desk side computer. No drives. missing top cover. did boot 200.00
Dec 11/44 loaded with boards in Rack, comes with 2) RA-80's, 1) TU80 in 42" rackHas 2 RA81 and 2 RA 91 drives.( loose), + a second 42" cabinet, with a 11/44 chassis, (no Boards) with a Power supply. (mint) Computer has booted in the past, but now has 12v power supply issues 600.00
Dec 11/34 Chassis and Boards 300.00
Nova 3 Chassis, Front panel and Boards 450.00
Nova 4 Chassis and boards 200.00
3 DG Desk Top computers. made out of modular units connected together like model 10/20 Style 50.00 each
Altos 486, 586, 5-15AD desk tops computers 50.00 each
Private Mail please with questions and or requests. most have not been turned on. Some have but years ago. All stored in a heated shop.
- Jerryg-wright(a)att.net
I am putting together a PDP-11/23 and have a working RSX-11M 4.4 OS running
in simh while I wait for a few parts. I want DECnet as well. I have the 4.7
kit and have done a netgen, but I can't install it because I don't have the
CEXPAR partition in my system image. I have gone over the VMR command in
the manual a few times and tried various things to try and create the
partition in my image, but have not been successful. I assume (from looking
in the manuals) that I either need to create that partition in my image, or
make room for it?
The netgen process has the defaults of 113500 as the base and 4300 as the
size. VMR complains about 'non-existing memory' for the base and if I try
the wild card I get 'alignment error'.
I have 512KW of memory that I plan to use in the real machine, so simh is
configured with that as well.
Any pointers would be greatly appreciated.
-Peter
I'm sorry if this has been asked before.
How can I send PDFs to Bitsavers?
I know I cannot just FTP and create a directory.
I am looking on the website but I am probably not reading what is
right in front of me.
Any help would be appreciated.
Is anyone out there familiar with the Wang 2200 BASIC? Of about 1973/1974
C. Corti, I think you still have one of these complete and runnable?
My question is, was its basically really "built" using TTL logic/chips?
The system didn't really have a microprocessor (neither did the early
Alto, right?)
I recall that system had many boards, the whole "CPU" box was external to
the monitor (and in the earliest versions, the power supply was also a
large external box). I can't really fathom creating a BASIC out of raw
TTL, or maybe I'm misunderstanding the approach.
-Steve
Hello PDP-11 Gurus,
I am looking for a better time-keeping alternative than the LTC in my
PDP-11/23-PLUS.
Is the KWV11-C card the best option for that or are there other options? I
have looked
around a bit and have seen some other RTC boards but don't know if they
would work.
-Peter
I'm attempting to interface with the 15-pin connector on the AX-45. I'm
assuming it uses a similar protocol as the IF-50 / IF-30 interface which
has been described in other forums
https://forum.classic-computing.de/forum/index.php?thread/29023-panasonic-r…
and has a working interface emulation
https://www.youtube.com/watch?v=1UJ5cyvNC_M
I opened up the typewriter and traced the pins of the 15-pin centronics
connector. So far I came up with this
pin 1 : GND
pin 2 : connected to the IC + has a pulldown resistor
pin 3 : GND
pin 4 : connected to the IC + has a pulldown resistor
pin 5 : GND
pin 6 : connected to the IC + has a pulldown resistor
pin 7 : GND
pin 8 : N/C
pin 9 : N/C
pin 10 : connected, but haven't been able to trace yet
pin 11 : connected, but haven't been able to trace yet
pin 12 : connected, but haven't been able to trace yet
pin 13: N/C
pin 14: N/C
pin 15: N/C
Probably these pins map to
DATA
CS
CLK
and
ACK
But this is still a work in progress - If we can figure out how to get the
typewriter to listen to our commands we're one step closer to getting it to
print.
The Packard-Bell PB440 (1963) was microprogrammable:
https://bitsavers.org/pdf/packardBell/PB-440/SP-149A_PB-440_microprogrammin…
Various earlier systems used microprogram-like techniques, but I don't
know how many were earlier than PB in their use of the word.
Was the PB-250's floating point microprogrammed?
--Chuck
Passing on a request: anyone know of a way to erase user data off a Mac SE hard disk that will leave the disk and Mac OS intact? The machine works and could go to a new home but has privileged medical data on it so just deleting files isn’t sufficient — the free space has to be overwritten. Are there any utilities available on floppy disk that could do it? Plan B is taking a sledgehammer to the drive, but seems a waste to go right to euthanasia if there’s another option.
