Commodore PET disk drive power-up error codes

From: Dave Dunfield <>
Date: Sat Sep 11 12:26:43 2004

Hi Guys,

Does anyone have information on error-codes that are flashed by PET disk drives
after power-up diagnostics fail.

I have a drive set which after powerup, enters into a state where it flashes the
POWER LED alternating with both drive LEDs (together) - It repeats this flash
cycle exactly 6 times, then pauses, then another 6 ... forever.

I assume it's a diagnostic failure - Can anyone tell me what it means?


dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools:
com             Vintage computing equipment collector.
Received on Sat Sep 11 2004 - 12:26:43 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:28 BST