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REGISTERS
Accumulator
Control Register (CR)
Program Status Word
Program Counter
Local Register Base
System Stack Pointer
Pointing Register (PR)
Index Register 1
Index Register 2
Data pointer
User Stack Pointer
Local Register
MSM66507/66P507
15
0
ACC
15
0
PSW
Bit 15 : Carry flag (CY)
Bit 14 : Zero flag (ZF)
Bit 13 : Half carry flag (HC)
Bit 12 : Data descriptor (DD)
Bit 11 : Sign flag (S)
Bit 10 : Master interrupt priority flag (MIP)
Bit 9 : Overflow flag (OV)
Bit 8 : Master interrupt enable flag (MIE)
Bit 7-3 : User flag
Bit 2-0 : System control base 2-0 (SCB2-0)
15
0
PC
LRB
SSP
15
0
X1
X2
DP
USP
7
07
0
ER0
R1
R0
ER1
R3
R2
ER2
R5
R4
ER3
R7
R6
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