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CHAPTER 2 CPU
Figure 2.7-1 Special Registers
AH AL
Accumulator
USP
User stack pointer
SSP
System stack pointer
PS
Processor status
PC
Program counter
DPR
Direct page register
PCB
Program bank register
DTB
Data bank register
USB
User bank register
SSB
System stack bank register
ADB
Additional data bank register
8 bits
16 bits
32 bits