At 14:32 1/07/98 -0400, you wrote:
>At the seminar in Toronto (June 16),  we were advised that Firmware v1.50
>was released to accomodate the 12C67x which has a different programming
>specification than others.
>
>No mention was made of changes to the programming specifications of the
>other 12 bit core devices.

The change for the 12C67x was because there was no existing 8-pin device
with the 14-Bit core  (as opposed to the 12-bit core  12C50x parts)
supported by the PS+ There were also changes with the OSC bits in the
config word  (There are 7 oscillator options!), however, I still can't see
why this would require a firmware change but it was one of the reasons given.

For those asking, I do not know if PS+ firmware 1.50 will do the job. You
can always check on there web site.

Personally, if microchip follow their own advice, there will not be a need
to change the firmware only an updated MPLAB should be required.  None of
my programmer users have had to rush for new firmware. These settings were
always mean't to be programmable.


>For older PicStart Plus programmers,  the firmware is supposedly available
>on the website -- download it and burn it into a 17C42 before dismantling
>the programmer and inserting the newly programmed 17C42 in place of the
>original.

You have buckley's chance of burning the picstart plus firmware into a
17C42 (2K).  You need a 17C44 (8K) and even this is nearly full.

>Tom
>
>>
>> Is the PicStart Plus firmware revision you refer to, the 1.50 version,
>> Jim (or anyone else who knows?)  I just got a PicStart Plus at the
>> seminar, need to know if it needs a change (doesn't look like it?)
>>
>>   Come to think of it, I'd better upgrade my older Parallax programmer
>> for this programming change!

Parallax? Good luck!

Jim

>>   Mark Willis, mwillis@nwlink.com
>