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Central Processor Unit (CPU)
Arithmetic/Logic Unit
MC68HC705J1A — Rev. 4.0
Technical Data
Central Processor Unit (CPU)
Figure 3-1. Programming Model
ACCUMULATOR (A)
INDEX REGISTER (X)
CONDITION CODE REGISTER (CCR)
PROGRAM COUNTER (PC)
STACK POINTER (SP)
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
ZERO FLAG
CARRY/BORROW FLAG
0
4
75
6
321
0
ARITHMETIC/LOGIC UNIT
CPU CONTROL UNIT
0
4
75
6
321
0
4
75
6
321
8
12
15
13
14
11 10
9
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0
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13
14
11 10
9
111
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0
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0
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