SEBHC Wiki

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Les Bird

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Nov 7, 2021, 6:02:36 PMNov 7
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All,
I'm slowing filling up the Wiki with useful stuff. The latest is that I'm trying to organize software by manufacturer (as discussed with Glenn in an email). It's all being done right from the main Wiki page to make it easy to find stuff (for example, if you need a Microsoft software package). I'm missing a few things though that I hope some of you have.

BIOS80 V3 disk image (I think I have the docs)
BIOS80 V4 documentation
BIOS80 V5 documentation
UCSD PASCAL - is this available on hard sector or soft? I have soft sector versions but I cannot read the disks with the H37IMGR. I think the disks are bad or it's in some weird format that the WD1797 can't read.

Lots more to add as I do more organizing.

Les

glenn.f...@gmail.com

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Nov 7, 2021, 8:54:19 PMNov 7
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I think the next wiki entry we need is one that explains how we/others can add to the wiki!  I’d be happy to contribute

 

As for UCSD P-System.  I’ve put a fair amount of time/effort into that.  I still hope to be able to get that working with hard disk (Z67-IDE+).

 

Heath marketed two versions.  The first was version II, which was a commercial packaging of the work done at UCSD.  This was distributed on hard sectored floppys. From the spring ’81 catalog:

 

 

Later this was replaced with version IV which was a commercial product from a company called SofTech. This was on soft sectored disks and only supported on the ’89. I can only find a reference to it in the 1984 catalog:

 

 

By which time it was way too late to the party (and way too expensive!). note the requirement for dual 96TPI drives just to have a usable system!

 

We have copies of both sets of media and I can help with that if you need me to.  I actually have all the doc’s for the version IV release as well.

 

If I can get this working on the H8/H89 with a hard disk my best bet will be to either use Version II (the source for which has been released by UCSD, but not the low level adaptation for the H8/89) or us the “adaptable” version IV, which uses the CPM BIOS for the low level hardware access.  This obviously wasn’t that popular back in the day because it required buying licenses for two OSes!

 

  • Glenn

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Norby

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Nov 8, 2021, 7:30:15 AMNov 8
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On USCD-P it will be nice to take an SCSI trace in case it is probing for correct H89 equipment installed. HDOS does this when it is booting and checks for Z67 HW. If correct sequence is not detected it fails to boot.

Norby

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On Nov 7, 2021, at 9:54 PM, glenn.f...@gmail.com wrote:



glenn.f...@gmail.com

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Nov 8, 2021, 8:12:20 AMNov 8
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Pretty sure they never built in any support for the 67. This was purely a floppy-based implementation as far as I can tell from the documentation and software.  We would have to figure out how to add that. 

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Norby

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Nov 8, 2021, 8:32:59 AMNov 8
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WOW! Thanks for the clarification. An only floppy based solution was hard on floppy media as it required a lot of diskette swapping for such OS. 

Hopefully as a team we can figure out on how to get it working on the Z67 controller. The Z67 is just a big fat floppy diskette.👍

If not perhaps we can get it working on the GIDE interface as it is a simpler solution.

Sent from my iPhone

On Nov 8, 2021, at 9:12 AM, glenn.f...@gmail.com wrote:



glenn.f...@gmail.com

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Nov 8, 2021, 8:48:20 AMNov 8
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Version II was pretty much worthless as it only worked on dual-floppy H17, and most of that was taken up by the OS!.  I don’t think it was smart enough to know about double-sided disks or about SY2:.  I think a lot of people probably felt gypped after laying out the $300.  The file system structure is also very dumb. only accesses files as sequential linear sectors on the disk, so you have to frequently run the “crunch” utility to ensure enough clear space.

 

Version IV was usable if you have a beefy enough system.

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Jeff Mowery

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Nov 8, 2021, 11:53:42 AMNov 8
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So far looking good Les.
Nice to have it all so organized.

Virus-free. www.avast.com

Les Bird

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Nov 9, 2021, 5:48:46 PMNov 9
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Glenn and all,

I've added a page explaining how to contribute to the Wiki. Check it out here:

Let me now if you need clarification or if you need access to edit the Wiki pages.

Les

Les Bird

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Nov 9, 2021, 6:35:41 PMNov 9
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All,

A new page on the Wiki about the HSFE and a trick that I use to hot swap a pair of drives between the H17 and H37 using the HSFE without ever changing the drive jumpers.

Les
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