S3P72G9

The S3P72G9 instruction set is specifically designed to support the large register files typically founded in most KS57-series microcontrollers. The S3P72G9 instruction set includes 1-bit, 4-bit, and 8-bit instructions for data manipulation, logical and arithmetic operations, program control, and CPU control. I/O instructions for peripheral hardware S3P72G9 is flexible and easy to use. Symbolic hardware names can be substituted as the instruction operand in place of the actual address. Other important features of the SAM47 instruction set include:

  - 1-byte referencing of long instructions (REF instruction)
  - Redundant instruction reduction (string effect)
  - Skip feature for ADC and SBC instructions

Instruction operands conform to the operand format defined for each instruction. Several instructions of S3P72G9 have multiple operand formats.

S3P72G9 can be used as instruction operands when addressing immediate data. Many of the symbols for specific registers and flags may also be substituted as labels for operations such DA, mema, memb, b, and so on. Using instruction labels can greatly simplify programming and debugging tasks.