On Wed, 2004-01-14 at 13:07, Olin Lathrop wrote:
> Peter Onion wrote:
> > Q:  Is the ICSP spec for 18FXXX devices the same as it was for 16F877,
> > or will I need to modify the programmer to use it with 18FXXX devices
> > (IE is the ICSP spec the same) ?
>
> The electrical details like 13V on MCLR, clock on PGC, serial data on PGD
> are the same.  The low level protocol is very different.

Thats good !  Looks like NO hardware changes need to my programmer.
Atleast I won't have to worry about getting that right again :-)

The "protocol is very different" can be tackled by a hacking the 16F627
code in the programmer.

> Of course this is all spelled out in the programming specs.

Yep, I've had a look at them now that I know the hardware isn't going to
be a big issue.

Thanks.

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