This month sees two new hardware boards and significant upgrades on the zOS/ZPUTA software. Rom Filing System The Rom Filing System has been upgraded with the release of v2.0 schematics and PCB’s. The new design resolves the shortcomings of v1.1 and incorporates a coded latch to guard against writing to the control registers when not intended. It also include 2 additional (optional) Memory devices, a 512KB FlashRAM to expand the RFS storage and a 512KB Static RAM to expand the memory for CP/M allowing for a greater number of SD drives and TPA size. Also included is a Software SPI and a Hardware SPI interface for driving an SD card. v2.0 schematic , v2.0 pcb tranZPUter SW After spending some time with the tranZPUter and noticing it’s design pitfalls (choosing an FPGA with insufficient GPIO pins) and the possibilities seen writing CP/M and the RFS updates, I sat down and redesigned the tranZPUter hardware around the Z80 so that it can be overclocked and access upto 512KB of local static…
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