Thanks. I don't think this is my problem as the error is random - but I'll
take a look. I still suspect a timing problem of some sort, possibly due to
Windows 95b (under which I am doing the testing) interupting the exchange
with the PIC. However, I haven't yet cracked where in my code to fix this
(if in fact it is the problem).

Cheers
Glenn

At 10:49 23/09/99 +0200, you wrote:
>On woensdag 22 september 1999 13:25, Glenn Pure
>[SMTP:Glenn.Pure@PCUG.ORG.AU] wrote:
>> I'm seeking some help to solve a problem with a gadget I'm making.
>>
>> This is a long and detailed question so don't bother now if you haven't
>got
>> 15 minutes to spare.
>>
>><SNIP>
>
>I had a similar problem with the eeprom. It took me some time, but finally
>found out that I was switching memory banks, but when a certain event
>occured I didn't switch back. This resulted in me updating EEADR and EEDATA,
>but in the wrong bank. It didn't hang, though it looked like it. What it was
>doing was: repeatedly writing the previous EEDATA value to the previous
>EEADR (it wasn't updated). It seemed the pic wasn't going anywhere, but it
>just was repeating itself all the time.
>
>Hope this helps,
>John
>
>