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ST7262XXX データシート(PDF) 97 Page - STMicroelectronics |
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ST7262XXX データシート(HTML) 97 Page - STMicroelectronics |
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97 / 139 page  97/139 Doc ID 6996 Rev 5 INSTRUCTION SET OVERVIEW (Cont’d) 11.1.6 Indirect Indexed (Short, Long) This is a combination of indirect and short indexed addressing modes. The operand is referenced by its memory address, which is defined by the un- signed addition of an index register value (X or Y) with a pointer value located in memory. The point- er address follows the opcode. The indirect indexed addressing mode consists of two submodes: Indirect Indexed (Short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing space, and requires 1 byte after the opcode. Indirect Indexed (Long) The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing space, and requires 1 byte after the opcode. Table 25. Instructions Supporting Direct, Indexed, Indirect and Indirect Indexed Addressing Modes 11.1.7 Relative mode (Direct, Indirect) This addressing mode is used to modify the PC register value, by adding an 8-bit signed offset to it. The relative addressing mode consists of two sub- modes: Relative (Direct) The offset is following the opcode. Relative (Indirect) The offset is defined in memory, which address follows the opcode. Long and Short Instructions Function LD Load CP Compare AND, OR, XOR Logical Operations ADC, ADD, SUB, SBC Arithmetic Additions/Sub- stractions operations BCP Bit Compare Short Instructions Only Function CLR Clear INC, DEC Increment/Decrement TNZ Test Negative or Zero CPL, NEG 1 or 2 Complement BSET, BRES Bit Operations BTJT, BTJF Bit Test and Jump Opera- tions SLL, SRL, SRA, RLC, RRC Shift and Rotate Operations SWAP Swap Nibbles CALL, JP Call or Jump subroutine Available Relative Direct/Indirect Instructions Function JRxx Conditional Jump CALLR Call Relative Obsolete Product(s) - Obsolete Product(s) |
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