>
> It's been a while since I last programmed a PIC and I'm starting a new
> project with a 16C54. I downloaded recent versions of the assembler,
> simulator and Picstart software.
>
> The assembler manual cautions that I should no longer use the OPTION
> and TRIS commands. Okay, how do I go about accessing these registers
> for setup, etc.? (My updated documentation on the micro's isn't here
> yet but I want to get started.) Where can I look at a code snippet
> of some "modern" 16C54 code?

On the 16C64, those instructions ARE the way to access those registers.  On
some later micros like the 6x/7x series, the instructions are still available
but the option and tris registers are available as "general purpose" registers
and should be accessed thusly, not by special-purpose instructions.