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.
So I have one of these boards, but I haven't been able to locate a manual
for this specific one.
Does anyone have the manual for this specific board?
- Peter
https://www.kennettclassic.com/surplus/
Lots of items remain. Priced cheap for pick-up only
Also have a complete NeXT cube with display, mouse, keyboard. SCSI2SD card
harddrive installed. Works $2700. Will consider shipping this.
Contact me privately with questions.
Bill
I saw on the BASIC Programming group on FaceBook that a new venture is going to start publishing Compute's Gazette again.
https://www.computesgazette.com/
Perhaps interesting to some of you.
Will
You just can't beat the person who never gives up.
Babe Ruth
