HP-1000 HP-IB / GP-IB IEEE-488.2, etc

[Tim Riker]

Bob Shannon wrote:
> To use HPIB mass-storage on an HP 1000 you should be using the 12821A
> interface, not the 59310B.
> 
> 12821A interfaces are quite common, I have several extras.

Are you offering? I'd love to take one or two off your hands.

> As for cables, the 12821A cable has a massive ferrite core and a
> grounding lug that the 59310 cable does not have.  But I believe that
> the two cables are electrically compatible.
> 
> I know I have a 12821A cable that was cut, and a replacement connector.
> (if your up to building your own)

Yes! If your offering, I'll take you up on it. I have extra card edge
connectors, but not the IEEE-488 ends.

> I would strongly recommend you try to use the 12821A interface with your
> floppy, you might find that the 'CS/80' boot loader rom supports that
> drive.
> If so, the loader ROM will only work with the 12821A board, not the
> 59310B.

That sounds great. I can load the boot ROM over serial to test things,
and if it works, I'll look for a real ROM.

> I can also point you towards low-level driver code for both the 59310B
> and the 12821A interface boards.

I'm interested in this too. I've been meaning to hunt for code, but have
not gotten to it yet.

> HP-IPL/OS fully supports the 59310 interface for instrument control.
> It should not be too hard to write IPL code to talk to your floppy disk
> drive and debug the thing from high-level code.
> 
> 12821A code support is not currently in HP-IPL/OS, but I do have tested
> and working low-level code for CS/80 disks that could be patched into
> a working CS/80 disk driver, and at that point IPL would have 12821A
> support all the way up to a crude DOS and file system.

cool! More things to play with. :)

-- 
Tim Riker - http://Rikers.org/ - TimR at Debian.org
Embedded Linux Technologist - http://eLinux.org/
BZFlag maintainer - http://BZFlag.org/ - for fun!