[sebhc] Schematic

[Lee Hart]

Carroll Waddell wrote:
> Does anyone have an x-ray view from Heath of the H8-17 controller
> board? I would like to try to clone that board.

I don't have it either, but wish I did.

But, the board that I think would be better to clone would be the
soft-sector controller (H8-37 I think). It supports far more disk
formats, and even has the SCSI connector for a hard drive.

> Now that I have found a source for the H8 card connectors, I will be
> making some hardware boards. If anyone is interested, the first one I
> will make is a 64K memory card.

64k is awfully small; one single memory chip. Might I suggest you make
it support (say) eight bytewide 28- or 32-pin devices, and have the
jumper options and bank select logic to allow it to be populated with
either RAMs or EPROMs, from 8k to 512k each. I already have a design
done for another project which I can share if you like.
-- 
"Never doubt that a small group of committed people can change the
world. Indeed, it's the only thing that ever has!" -- Margaret Meade
--
Lee A. Hart  814 8th Ave N  Sartell MN 56377  leeahart_at_earthlink.net

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