Compact Flash Module adds storage option for the RC2014 homebrew Z80 computerDesigned by RFC2795 Ltd in United Kingdom
What is RC2014? 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 anythi...Read More…
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 nominally 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. The RC2014 is designed in such a way that you can build your own modules to expand it. As such, if you have access to similar components, or have specific needs, you might not need all the items I have on offer.
This module adds solid state disc storage to the RC2014. Primarily it is intended to be used for running CP/M when used alongside the 64k RAM Module and the Pageable ROM Module. It is not accessible directly from BASIC as supplied with the regular RC2014.
The CP/M distribution, as modified by Grant Searle will support 64MB or 128MB compact flash cards. Larger sizes can be used, however a maximum of 128MB will be available. A 128MB card is split in to 15 x 8MB drives and 1 x 2MB drive, available as Drive A: to Drive P: and a 64MB card is split in to 7 x 8MB drives and 1 x 5MB available as Drive A: to Drive H:
In order run CP/M you need the following set up as a minimum; 7.3728Mhz Clock Module, Serial I/O Module, Z80 CPU Module, Pageable ROM Module, 64K RAM Module, Backplane (Either Backplane 8 with additional connection between ROM and RAM, or Backplane Pro) and CP/M Console on ROM
Please be aware that the pitch of the pins on the Compact Flash socket is very fine, at 0.635mm (0.025 inch), which is a quarter of the pitch of the other components on the RC2014. With patience, a good eye and a steady hand it can be hand soldered on without too much trouble. If you prefer to use solder paste with either a reflow station or "toaster" oven, I now offer a laser cut stencil to allow the perfect amount of paste to be spread on the board.
For those not brave enough to try, however, I will also be offering the PCB with this connector already attached and tested. Note that this might add a few days to the shipping time.
PCB Only Only the bare board
Compact Flash 128MB or 64MB Compact Flash, pre formatted with CP/M installed and essential utilities already installed on Drive C:. You need to select which serial module you are using, either the standard 68B50 as supplied in the Full Monty kit, or SIO/2 Dual Serial
CP/M Console ROM 27C512 64K with CP/M Console loaded at 0x8000 and 32k MS BASIC at 0x0000 . To be used with Pageable ROM Module
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