SLD - Serial LoaD from data space using indirect addressing

The SLD instruction uses indirect addressing to load data from the data space to the TPI physical layer shift-register for serial read-out. The data space location is pointed by the Pointer Register (PR), where the address must have been stored before data is accessed. The Pointer Register is either left unchanged by the operation, or post-incremented.
Table 1. The Serial Load from Data Space (SLD) Instruction
Operation Opcode Remarks Register
data ← DS[PR] 0010 0000 PR ← PR Unchanged
data ← DS[PR] 0010 0100 PR ← PR + 1 Post increment