Greetings

I am using a 16C74 with TMR0 providing interrupts at a fixed rate. I have
to save values during the interrupt routine so I made use of the example
given in the data manual to save Status and W registers in RAM. This is
the part that is causing problems.

>From the data manual:
"Example 14-1 and Example 14-2 store and restore the STATUS and W
registers. For the PIC16C74 and PIC16c73, the register, W_TEMP, must be
defined in both banks and must be defined at the same offset from the the
bank base address (i.e., if W_TEMP is defined at 0x20 in bank0, it must
also be defined at 0xA0 in bank 1)."

My problem is that defining W_TEMP in both banks produces an error. I have
made use of the CBLOCK directive to define W_TEMP.

Should I be making use of some other way of defining W_TEMP?

TIA



Victor Moisey
Institute of Child Health
Red Cross Childrens Hospital
Private Bag
Rondebosch 7700
Cape Town
South Africa