In a message dated 7/26/02 19:18:36 Eastern Daylight Time, rsillem@FLASH.NET
writes:


>
>         I am new to pics and have been having some trouble. I am using a
> 16F628 to
> control a L293D driver which is a TTL device. I tested the circuit with a
> 16F84 before acquiring the 16F628 and it worked fine. So, not thinking I
> assumed that RA0 through RA3 had TTL buffers on the 16F628 like it does on
> the 16F84. But it does not. So before I rip my circuit apart and redo it, I
> would like some confirmation that this is indeed the problem. If not I'll
> look for other errors. Thanks!
>

If you are using PORTA in a digital mode you have to write

ADCON1 = 7 at the very beginning of your program.

Sid

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