Cloud CP/M

Random Generator Test

Drive A : User 0 • by DJ Sures

Created 2026-05-03 • Updated 2026-05-03

Diagnostic that exercises the Z80 random number generator and displays the output to verify proper randomness for games and crypto.

RNDTST.COM program is located on the A: drive in user area 0. To run this, look in the Internet Adapter or Headless menu and select Cloud CPM. After CPM loads and you are presented with a A:0> prompt, type the drive (A:), and then type the user area (user 0). If you type DIR, look for the COM file (RNDTST.COM). Enter that filename at the prompt to execute the Random Generator Test.

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Random Generator Test
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