with a 80c51 I can just do a MOVC command and fetch the value of a byte at
the location in program memory.
Is the same possible in a PIC? Say a pic 14000?
No, not in the 14000. IIRC, it's possible in many 16F devices, only
one 16C device, and all 17xxx/18xxx devices. I don't think any of the
12C/12F devices including the 14-bit flash ones can do it.
BTW, I don't think you should be using the 14000 in new designs.
If you want to create a LUT, you can create a table of retlw entries
and do a computed jump on any PIC. If you want to checksum the memory
to meet safety-critical software standards, it can only be done on
some PICs (as indicated above).
Best regards,
Spehro Pefhany
