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MDT10P55A
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P. 3
2006/1
Ver. 1.3
6. 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 --- from ALU
JUMP, CALL --- from instruction word
RTWI, RET --- from STACK