Re: Help to fix a Lisa error 57

Also I forgot to tell that I also get a error 82 with the internal hard drive (Drive doesn't answer).
Any ideas of the two issues?

On Oct 18, 2006, at 5:58 PM, Patrick Symes wrote:

>
> I have an Apple Lisa 2 with the 10 MB internal hard drive and 400 K
> floppy drive.
>
> On Oct 18, 2006, at 9:55 AM, Ray Arachelian wrote:
>
>>
>> Patrick Symes wrote:
>>> I need help to fix a Lisa error 57, that is a disk controller
>>> problem.
>>> Any ideas?
>> The self test code says this:
>>
>> 1136| ; Check disk alive indicator
>> 1136|
>> 1136| 4282 CLR.L D2 ;clear
>> for
>> use CHG022
>> 1138| 227C 00FC D901 MOVE.L #VIA2BASE,A1 ;set
>> ptr to
>> parallel port 6522
>> 113E| 0229 00BF 0010 ANDI.B #$BF,DDRB2(A1) ;ensure
>> bit
>> 6 is input
>> 1144| 203C 001C 8000 MOVE.L #DSKTMOUT,D0 ;set up
>> timeout count for 15 secs
>> 114A| 0811 0006 @2 BTST #DSKDIAG,IRB2(A1) ;check
>> indicator
>> 114E| 6606 BNE.S @3 ;skip
>> if set
>> 1150| 5380 SUBQ.L #1,D0 ;else
>> loop
>> until timeout (about 8 us per loop)
>> 1152| 66F6 BNE.S @2
>> 1154| 7439 MOVEQ #EDISK,D2 ;error if
>> not set CHG022
>> 1156|
>>
>> Error 57 comes from the above code (EDISK). It's looking for the
>> DiskDiag line to be set within 15 seconds. You get this error when
>> that
>> doesn't happen.
>>
>> Which could indicate several things: VIA2 might be bad - very
>> unlikely,
>> especially if you can boot off a ProFile.
>>
>> It could be a problem with the drive or more likely the Lisa Lite
>> board. It could also be a bad I/O board.
>>
>> What kind of Lisa do you have? Specifically, which I/O board do you
>> have, and what kind of floppy does it use? 400K? 800K? Is there a
>> Lite
>> board?
>>
>>
>>>
>>
>>
>
>
> >
>
>

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