ZX Prism – Solid Progress (by SJB)

Development of a FPGA based Spectrum Compatible computer.
The ZX Prism should remain compatible with the ZX Spectrum whilst expanding its graphics and memory.

“So much progress since the last update! First up, I finally found why esxDOS wasn’t working properly on Prism. Turns out that the divMMC automapper was working perfectly. The problem was actually with the SPI port. +3eMMC was working fine because it uses the SPI port slightly differently to esxDOS. A couple of tweaks to the SPI port implementation’s sorted everything out – now both esxDOS and +3eMMC work perfectly.”

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