Rabbit 2000 Reference Manual

Also see for 2000: Getting started manual User manual Getting started Getting started manual Designers handbook

Rabbit 2000 Reference Manual Manual pdf 85 page image

Instruction Reference Manual 81DescriptionLoads the Interrupt Priority register, IP, with the data whose address is in the Stack Pointer, SP. Then loadsthe low order byte of the Program Counter, PC, with the data whose address is 1 higher than the data in SPand loads the high order byte of the PC with the data whose address is two higher than the data in the SP. Thedata in the SP is then incremented three times. This privileged instruction was implemented for the Rabbitand is not available for the Z180.RETIOpcode Instruction Clocks OperationED 4D RETI 12 (2,2,1,2,2,2,1) IP = (SP); PC (low) = (SP+1);PC (high) = (SP + 2); SP = SP + 3Flags ALTD I/OS Z L/V C F R SP S D- - - -