"The Missing Module"
Pairing this module with S. Cousins SC108 (CPU+memory) or SC114 SBC form a complete CP/M computer system.
The beauty with #61 is that it can be used as a
1) bus clock
2) serial interface
4) or a combination of these functions.
In addition, it allows the CPU to run asynchronously up to 24Mhz (Z80) or 33Mhz (Z180)
Banked EPROM RAM Board
- EPROM can be enabled/disabled with write to register
- EPROM occupies first 16K of address space
- First or Second bank of 16K in EPROM can be selected
- Modified to use ZIFF Socket
This is a DMA module for the Z80 CPU used in the RC2014.
**This version has still a bug**. One must connect the +5V signal (available at a pin on the PCB) to the RDY single pin. I tried only memor transfers at 7.8 MHz and they seem to work without problems. So the RDY-signal was floating and this means, that the DMA did NOT release the bus again (the test program was using the continous...
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