The module has the following features:

• 512k byte RAM memory
• 512k byte Flash ROM memory
• Designed for use with Z80 CPU
• Memory divided into 32k byte banks
• Top 32k of Z80 memory map is always RAM
• Bottom 32k bytes of Z80 memory map can be any 32k bank
• Suitable memory for running RomWBW and CP/M
• the kit includes RomWBW pre-programmed into the Flash ROM
• Compatible with RCBus-Z80 and RCBus-2014
• Recommended Z80 CPU module is SC706.

This module provides all the memory required to run RomWBW and CP/M.

The kit is supplied with RomWBW pre-programmed into the Flash ROM. RomWBW includes CP/M and a range of useful software. It also supports a wide range of add on hardware. RomWBW has been provided free of charge by its author Wayne Warthen. Thank you, Wayne, for providing this and all the support.

Documentation

The documentation can be found at www.smallcomputercentral.com

Compatibility

This module conforms to the RCBus specification v1.0 for RCBus-2014 and RCBus-Z80.

It should be noted that this module uses 32k byte bank switching which is ideal for RomWBW but may not work with software designed for other bank sizes, such as 16k bytes.

The RCBus specification includes RCBus-2014 (both RC2014 standard 40-pin bus and RC2014 enhanced 60-pin bus) and also the full 80-pin RCBus. The 80-pin RCBus provides support for advanced Z80 features, such as the interrupt daisy-chain, as well as support for other processor families.

Compatible with Z80 CPU module SC706, but not Z80 + MMU module SC730.

The Kit

This kit includes all the components needed to make the module, as shown in the first picture. Other modules and backplanes shown in the pictures are not included. You will require tools, solder, and cleaning materials to assemble this kit.

Printed Circuit Board

The printed circuit board is available on its own here.

Complete Systems

If you are looking for a complete system the following products might be appropriate.

• SC126 RCBus-80pin Z180 RomWBW CP/M Motherboard
• SC720 RCBus-80pin Z80 RomWBW CP/M Motherboard
• SC791 RCBus-80pin Z80 RomWBW CP/M Computer
• SC792 RCBus-80pin Z180 RomWBW CP/M Computer
• SC114 RCBus-40pin Z80 SCM & BASIC Motherboard
• SC131 Pocket-sized Z180 RomWBW CP/M computer

Notes

• This product is supplied as a kit of parts that require assembly.
• It is your responsibility to pay any import duty or taxes charged by your home country.
• This product is designed for hobby use and is not suitable for industrial, commercial or safety-critical applications.
• RomWBW is copyright Wayne Warthen and has been provided free of charge with his permission.