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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST72325AR7-Auto 데이터시트(PDF) 184 Page - STMicroelectronics |
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ST72325AR7-Auto 데이터시트(HTML) 184 Page - STMicroelectronics |
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184 / 243 page  Obsolete Product(s) - Obsolete Product(s) Instruction set ST72325xxx-Auto 184/243 Doc ID 13770 Rev 3 18.1.5 Indirect (short, long) The required data byte to do the operation is found by its memory address, located in memory (pointer). The pointer address follows the opcode. The indirect addressing mode consists of two submodes: Indirect (short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing space, and requires 1 byte after the opcode. Indirect (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. 18.1.6 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 unsigned addition of an index register value (X or Y) with a pointer value located in memory. The pointer 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 101. Instructions supporting direct, indexed, indirect, and indirect indexed addressing modes Type Instruction Function Long and short instructions LD Load CP Compare AND, OR, XOR Logical operations ADC, ADD, SUB, SBC Arithmetic Additions/Subtractions operations BCP Bit Compare |
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