The following table lists the instructions which HCS08 core provides in addition to the HC08 core instructions:
| Instruction | Addressing modes | Descriptions |
|---|---|---|
| BGND | Enter Background Debug Mode. Only available with the -CS08/-C08/-CRS08: Derivative family assembler options. | |
| CPHX | #<expression> <expression> <expression>,SP | Compare index register H:X with memory Stack pointer and extended addressing modes are only available with the -CS08, -C08, or -CRS08 assembler options. |
| LDHX | #<expression> <expression> <expression>,X ,X <expression>,SP | Load index register H:X from memory Indexed, stack pointer, and extended addressing modes are only available with the -CS08 option |
| STHX | <expression> <expression>,SP | Store index register H:X Stack pointer and extended addressing modes are only available with the -CS08option. |