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EOI: Model III and 4 hi-res graphics board reproduction kits

Looking for Expressions of Interest (EOIs) for Grafyx Solution 3.2 for the Model III.

They are fiddly to make and take longer to assemble than a GX 4.2 or 5.1 even though it has fewer components.

Installation is more complex than the GX 4.2/5.1 and requires a trace cut or two on the Model III motherboard, 9 fly leads clipped to various IC pins.

I can tool up to make 10-20 of them if people are interested.

Price will be unchanged ($USD165.00) to keep it consistent with my other HRG products.

Ian.
 
Hmmm, not sure. I would certainly be interested in a RS 26-1125 reproduction though. I believe the 512x192 Grafyx 3.2 has a memory mapped interface which is incompatible with the 640x240 RS boards as well as the other later Grafyx boards. From a programmers perspective, the consistency of the RS board port-driven interface means the same graphics code can run on the Model II, III and 4. The 3.2 was its own beast. But, it would be interesting to play with so I'd probably snag one.

BTW, any plans for Model I hi-res reproductions?
 
Ok I've agonised over this for long enough. It's almost 2017 so I'm doing something about it.

I'm selling these as a bare-bones kit for skilled hackers for $USD45.00 + shipping

Available in either "standard" (uses 6x 6116s) or "improved" (uses a single 62256) PCB versions, you need to supply:

74LS00 x2, 74LS02 x2, 74LS32, 74LS157, 74LS166 x2, 74LS174, 74LS245, 62256 (or 6116 x6)

9 wires (Brown, Red, Orange, Yellow, Green, Blue, Purple, Grey, White) and 8 small test clips

DSCN1669.jpgDSCN1673.jpg

If you want one you can contact me directly rather than picking up one via eBay. If you want more information on it, here is the eBay listing:

http://www.ebay.com/itm/Hi-Res-Graphics-PCB-Kit-for-TRS-80-Model-III-Improved-Grafyx-3-2-for-Hackers-/162338474997?hash=item25cc208bf5:g:btMAAOSwA3dYZdJk

Ian.
 
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