I found this 1988 Vintage computer in the Trash. Lets Restore it! (HP1000 A400 Restoration)
HTML-код
- Опубликовано: 8 сен 2024
- In this video, i take a look at a HP1000-A400 that i found in the E-waste bin. the machine looks very sad and distroyed, but can I fix it?
in this first episode I will take a look if the power supply works.
The music in this video is made by me. if you like it, follow me on bandcamp:
logicode.bandc...
also I stream on twitch
/ mutzbunny
New Sub; Detroit, Michigan, USA
Freaking Awesome Brotha!
I think the only devices that ever used the HP-IB High Speed mode were the hard disk and the tape drives for the HP 9000 series. The most common HP-IB/GPIB devices like printers, plotters and data acquisition devices (e.g. HP rack multimeters etc) only used the regular modes.
Brilliant work brother ❤
Love form India ❤
You've got some really cool test gear in your lab! I'm envious :)
I believe the CPU in the A400 is a monolithic design rather than the bit-slice design in the A600 and A600+.
very possible. I have not fully understood yet how it all works
I loved this. Keep up the good work.
Looking forward to the next video!
Nice to see new minicomputer content, even though I've never seen HP minicomputers before :)
Ill show you more of them
@@curiouscomputer I am looking forward to new content. I also watched the second video (honestly, I watched the second video first because RUclips suggested it to me :)
What is the part number for the Mux board? 12040A, by any chance? If so, it's an 8-channel RS-232 serial card, based on a Z80 microprocessor. And, yes, the high speed HP-IB card was used to talk to the disks and tapes, at a massive (for the time) 1 megabyte / second.
I think it could be a 12040. I need to check that. Would be really cool if so.
I can confirm i have 4x 12040A cards
@@curiouscomputer Ok, wow, that's a nice set of ports. The 12040A (and sister card 12792A for the M/E/F series) were line-oriented serial interfaces, best used for hooking terminals to the computers. I believe there was a firmware update at some point a few years after release that made them a bit better for random serial device interfacing, where strings didn't necessarily terminate in the carriage return character, though both versions would do either mode. The RTE drivers allowed adding a "device driver" to do higher level functions, such as managing the cartridge tape units on the 264x terminals. HP provided some, and the manual described how to write your own. The cards used a breakout cable and box with 8 of the 25-pin connectors, otherwise you're in for a lot of wiring. Hope they still work!