RC2014 is a simple 8 bit Z80 based modular computer. It is inspired by the home built computers of the late 70s and computer revolution of the early 80s. It is not a clone of anything specific, but there are suggestions of the ZX81, UK101, S100, Superboard II and Apple I in here. It typically has 8K ROM, 32K RAM, runs at 7.3728MHz and communicates over serial at 115,200 baud. As a bare minimum, you will need a CPU, ROM, RAM, Clock and Input/Output module.
This module is an alternative to the standard Z80 CPU Module and features a header that can take advantage of the extra Z80 signals that are not normally used on a regular RC2014
The standard Z80 CPU Module works great with the RC2014, and the signals that are not normally required are bought out on a header at the top of the module for you to connect wires to if needed. However, if you are using modules that take advantage of the Enhanced Bus, such as the SD Memory Dump Module, and also using Backplane Pro, this module gives you a neater more foolproof alternative.
The WAIT, NMI, BUSRQ and INT signals are pulled high via 10k resistors, so there is no need to add or remove links depending what other modules you are using.
The PCB can also accommodate a ZIF socket (not supplied) if you anticipate swapping out your CPU
Mr C | Aug. 16, 2017
Richard | May 21, 2017
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Tinkering with old 8 bit home computers to see what can be done with modern solutions.