The Computerist MEMORY PLUS board is a RAM/ROM expansion board for various home computer systems.
Made by the The Computerist.
With up to 8k of RAM, 8k of (EP)ROM and the ability to program EPROMs this was quite the must have upgrade for anyone who could afford it.
The Manual in HTML format, original OCRed by Lee Davison, corrected and enhanced with Appendix A Circuit Diagram by Hans Otten.
MEMORY PLUS manual in PDF format, Appendix A is now included, added by Hans Otten.