User’s Manual U14826EJ5V0UD170CHAPTER 19 INSTRUCTION SET OVERVIEWThis chapter lists the instruction set of theμPD789860, 789861 Subseries. For details of the operation andmachine language (instruction code) of each instruction, refer to 78K/0S Series Instructions User’s Manual(U11047E).19.1 Operation19.1.1 Operand identifiers and description methodsOperands are described in “Operand” column of each instruction in accordance with the description method of theinstruction operand identifier (refer to the assembler specifications for details). When there are two or moredescription methods, select one of them. Uppercase letters and the symbols #, !, $, and [ ] are key words and aredescribed as they are. Each symbol has the following meaning.• #: Immediate data specification• !: Absolute address specification• $: Relative address specification• [ ]: Indirect address specificationIn the case of immediate data, describe an appropriate numeric value or a label. When using a label, be sure todescribe the #, !, $ and [ ] symbols.For operand register identifiers, r and rp, either function names (X, A, C, etc.) or absolute names (names inparentheses in the table below, R0, R1, R2, etc.) can be used for description.Table 19-1. Operand Identifiers and Description MethodsIdentifier Description MethodrrpsfrX (R0), A (R1), C (R2), B (R3), E (R4), D (R5), L (R6), H (R7)AX (RP0), BC (RP1), DE (RP2), HL (RP3)Special function register symbolsaddrsaddrpFE20H to FF1FH Immediate data or labelsFE20H to FF1FH Immediate data or labels (even addresses only)addr16addr50000H to FFFFH Immediate data or labels (only even addresses for 16-bit data transfer instructions)0040H to 007FH Immediate data or labels (even addresses only)wordbytebit16-bit immediate data or label8-bit immediate data or label3-bit immediate data or labelRemark For symbols of special function registers, see Table 4-3 Special Function Registers.
