9.2.1 General Purpose Register n

These are general purpose registers that can be used to store data, such as global variables and flags, in the bit accessible I/O memory space.
Name: GPRn
Offset: 0x00 + n*0x01 [n=0..3]
Reset: 0x00
Property: -

Bit 76543210 
 GPR[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 7:0 – GPR[7:0] General Purpose Register Byte