<< Previous | Next >>

> SURES System/User Register Reset Rabbit 3000A/4000 Instruction

> Opcode | Instruction | Clocks | Operation
> ED 7D | SURES | 4 (2,2) | SU = {SU[1:0],SU[7:2]}

> Flags | ALTD | IOI/IOE
> S | Z | L/V | C | F | R | SP | S | D
> - | - | - | - |  |  |  |  |

> #### Description

> "Pops" the current mode off the SU register, returning the processor mode to the previous mode by rotating SU two bits to the right.

> This is a chained-atomic instruction, meaning that an interrupt cannot take place between this instruction and the instruction following it.

<< Previous | Next >>