Basic Modules


The Basic modules are designed to function as a simple retro computer by using three modules, withholding the modularity. Having a clock on both the CPU and serial I/O modules, enable the two modules to run at different clock speed. With the Basic modules, it is easier to upgrade to running CP/M, e.g., by only swapping the ROM and RAM module with the RC2014 - 512K ROM/512K Ram module. Other benefits with these modules; easy to check for problems due to the generous spacing between components and annotated connections, in addition to saving slots.



CPU and CLOCK

Design versions of the CPU and Clock Modules

  • #21 - Single 40 pin + 10 pin connector, 74HCT04 + crystal
  • #22 - Double 2 x 40 pin, 74HCT04 + crystal
  • #23 - Double 2 x 40 pin, crystal occillator
Stacks Image 49


SERIAL I/O and CLOCK

Design versions of the Serial I/O (MC68B50) and Clock Modules

  • #31 - Single 40 pin connector, 74HCT04 + crystal
  • #32 - Double 2 x 40 pin connector, crystal occillator
  • #35 - Single 40 pin connector, crystal occillator
Stacks Image 55


ROM and RAM

Design versions of the ROM and RAM Modules

  • #41 - Single 40 pin connector, 64kb ROM switchable in 8 x 8kb banks, 32kb RAM
  • #43 - Single 40 pin connector, 64kb ROM switchable in 8 x 8kb banks, 32kb RAM
  • #44 - Single 40 pin connector, 64kb ROM switchable in 2 x 32kb banks, 32kb RAM
Stacks Image 53