right, is nearly identical to that FSR of the 10F200. The only difference is that the 12F508 has 25 05h OSCCAL general purpose registers, instead of 16, with no ‘gaps’ in the memory map. 06h GPIO 07h General VDD 1 8 VSS Purpose Registers 8 1Fh GP5 2 0 7 GP0 F 2 TRIS GP4 3 1 6 GP1 I P OPTION GP3 4 5 GP2