>> 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?
>
>UEs, it's a diagnostic code. From the 8050/8250 service manual (component
>references will be different in other drives, I guess )
>
># flashses
>
>1 Zero Page 6532 UC1,UE1
>2 ROM $E000-$FFFF 2364 UL1
>3 ROM $C000-$DFFF 2364 UH1
>4 Not Used
>5 Zero Page 6530 UK3
>6 RAM $1000-$13FF 2114 UC4,UC5
>7 RAM $2000-$23FF 2114 UD4,UD5
>8 RAM $3000-$33FF 2114 UE4,UE5
>9 RAM $4000-$43FF 2114 UF4,UF5
>10 Cotnroller ROM 6530 UK3 or 6502 UH3
Thanks Tony!,
thats exactly what I need.
[If it is a 2114, it will be the second one I've found dead in PET hardware
over the past month - other was was video RAM in a 4032]
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
http://www.parse.com/~ddunfield/museum/index.html
Received on Sat Sep 11 2004 - 18:27:53 BST