Load CP/M Games

Chris DavisFun Things To Do

MicroSD Card with Altair disk images (available here.)
Terminal software (Putty is highly recommended.)


  1. Stop whatever the Altair is doing – raise “Stop”, then raise “Reset”.
  2. Mount emulated disk 5 in drive 0 – switch 12 up, switch 2 up, switch 0 up (all other switches down).
  3. AUX2 down to load disk.
    Terminal will say “[mounted disk ‘DISK05.DSK: Games (CP/M programs)’ in drive 0]”
  4. To run bootable disk – switch 3 up (all others down).
  5. AUX1 down. This will install the Disk Boot ROM and boot disk 0.
  6. Terminal will display
    62K CP/M
    Version 2.2mits (07/28/80)
    Copyright 1980 by Burcon Inc.
  7. You can start by entering “dir”, but you’ll want to google a list of CP/M commands.


Be sure to give CATCHUM a try – it’s an ASCII version of PAC-MAN!