Instruction manual

Table of Contents
Introduction................................................................................................................................................3
Building Tips..............................................................................................................................................5
Building the Disk and Memory Expansion Board.....................................................................................5
Testing and Using the Disk and Memory Expansion...............................................................................10
The diskrd command...........................................................................................................................12
The diskwr command..........................................................................................................................12
The cpm command..............................................................................................................................12
Testing the memory expansion............................................................................................................12
Connecting a disk drive.......................................................................................................................13
Testing the Disk Drive.........................................................................................................................15
Installing CP/M version 2.2.....................................................................................................................18
About CP/M........................................................................................................................................18
CP/M Source Code..............................................................................................................................18
Preparing the disk for CP/M................................................................................................................21
Putting the CP/M System Files onto the disk......................................................................................23
Installing the CP/M loader..................................................................................................................24
Running CP/M.........................................................................................................................................26
Built-in commands..............................................................................................................................26
Transient commands............................................................................................................................29
Disk and Memory Expansion Schematics and Explanations...................................................................38
IDE Interface.......................................................................................................................................38
Memory Configuration Logic.............................................................................................................40
Memory ICs and Configuration Flip-flop...........................................................................................42
Disk and Memory Expansion Parts Organizer and List...........................................................................44
Selected Program Listings.......................................................................................................................45
ROM monitor......................................................................................................................................45
Customized BIOS................................................................................................................................63
Format.................................................................................................................................................73
Putsys...................................................................................................................................................75
CP/M loader........................................................................................................................................76
Table of Tested Disk Drives.....................................................................................................................80
2