Memory Map (A) Register Map Address Description 00 Indirect Addressing Register 01 RTCC 02 PC 03 STATUS 04 MSR 06 Port B 07 Port C 08~1F 30~3F 50~5F 70~7F General purpose registers (1)IAR ( Indirect Address Register) : R0 (2) RTCC (Real Time Counter/Counter Register) : R1 (3) PC (Program Counter) : R2 Write PC, CALL --- always 0 JUMP --- from instruction word RTWI, RET --- from STACK A9 A8 A7~A0 Write PC, JUMP, CALL --- from STATUS b5 RTWI, RET --- from STACK Write PC
