Hi all,
I?m reassembling an H765 supply after cleaning and repairs. It has the "newer" style 15V and power monitoring board (the one with the edge finger connector, same as used in H7420 supplies.)
The board slides into a slot in a sub-chassis that also houses the power control circuitry, which small chassis later slides into, and is secured to, the larger H7420 chassis.
I cannot for the life of me figure out what, if anything, secures the power monitor board to the small chassis! There don?t appear to be any conveniently placed fixtures to which to screw down the board, and I haven?t been able to inform myself by pondering the various engineering diagrams, IPB?s, nor the pile of remaining fastening hardware...
When I test-fit everything in the larger chassis, the unsecured board is held captive only by the grace of the surrounding wiring harness and by some small clearance issues with the large cap on the board. This doesn't seem satisfactory; as part of something like an 11/34 on tilt slides, it would seem to bang around a bit in there if left loose like that.
Am I missing something? Puzzled...
--FritzM.
Found more stuff. 4 Perq boards, the HP1000, a Perq mouse and "pad", a
Sun4 keyboard with 15 pin plug, and another Perq2 keyboard. Also found a
weird one, a MFM drive with an adapter board on the bottom. Is the below
a MFM to Shugart interface?
Pics are up on the Discord server right now along with the HP1000.
C
I seem to recall that in "how to shoot yourself in the foot in various
programming languages," APL is something like "There's a bang. Your foot
is missing. You don't remember enough linear algebra to know how it got
that way."
Working to restore a series 30 , looking for any spare boards ,cpu ,bic boards from a series 30/33Just putting it out there ,long shot i knowCheers,Grant?Sent from my Galaxy
I'm wondering how to do hard drive formatting, which is likely to be needed when working with emulated disks in David Gesswein's MFM emulator.
As far as I can tell, RT-11 can do this. At least I have a source code printout for such a formatter. But while I can find a hard drive image of RT V5 for Pro, I haven't found any floppy-bootable images. And I think it's a bit tricky to create one. I knew, long ago for V2...
Any suggestions? Any alternative sources for a formatter? I guess I really should consider typing in the core of that formatter and adding it to RSTS.
paul
I have a nice ICL PERQ 2 T2 that I am going to start working with now.
First thing was to try to image the hard drive. It is a Micropolis 1303. It
spins up but when it reaches what I think the correct speed it immediately
spins down. Usually I think there would be a click and then the heads would
recalibrate. But there is no click and no head movement.
I really would like to make an image of the drive. What are your thoughts?
Are the heads sticking?
Some kind of solenoid that is not releasing the heads? Not properly up to
speed? (but it sounds like the speed is right)
/Mattis
Hi all,
Does anybody know if the old Compuserve discussion forums are
available anywhere now?
I'm specifically interested in the ones about HP Palmtops and cc:Mail.
/Tomas
