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Old 28th Sep 2011, 9:51 pm   #7
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,482
Default Re: ZX Spectrum AMX mouse comms format?

Quote:
Originally Posted by cmjones01 View Post
By the way, when I mentioned starting with an 8255, I meant a *model* of the 8255 in VHDL or Verilog as a starting point for developing a Z80-PIO model which would be compatible enough with the existing software
Appeals to me too, but although I have been putting together microprocessors and microcontrollers since the late seventies I have absolutely no experience with or tools for using programmable logic (sorry if that's not what you are talking about - I'm assuming it is) - it would probably be a pretty hefty (and expensive) learning curve for me now.

I have a lot of admiration for what people seem to be able to do with them though - there's a guy who has built a modern version of Sinclair's original home computer (the MK14) and most of it seems to be a large programmable device used to replace most/all of the original separate logic.

Still, the best solution for me seems to be replication of the original Spectrum AMX mouse interface.
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