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CONTROL REGISTERS S3F80JB
4-38
RP0 — Register Pointer 0 D6H Set1 Bank0
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
Reset Value
1 1 0 0 0 – – –
Read/Write
R/W R/W R/W R/W R/W – – –
Addressing Mode
Register addressing mode only
.7 – .3 Register Pointer 0 Address Value
Register pointer 0 can independently point to one of the 248-byte working register
areas in the register file. Using the register pointers RP0 and RP1, you can select
two 8-byte register slices at one time as active working register space. After a reset,
RP0 points to address C0H in register set 1,bank0, selecting the 8-byte working
register slice C0H–C7H.
.2 – .0
Not used for S3F80JB.
RP1 — Register Pointer 1 D7H Set1 Bank0
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
Reset Value
1 1 0 0 1 – – –
Read/Write
R/W R/W R/W R/W R/W – – –
Addressing Mode Register addressing mode only
.7 – .3 Register Pointer 1 Address Value
Register pointer 1 can independently point to one of the 248-byte working register
areas in the register file. Using the register pointers RP0 and RP1, you can select
two 8-byte register slices at one time as active working register space. After a reset,
RP1 points to address C8H in register set 1, bank0, selecting the 8-byte working
register slice C8H–CFH.
.2 – .0
Not used for S3F80JB.