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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9805 датащи(PDF) 89 Page - STMicroelectronics |
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L9805 датащи(HTML) 89 Page - STMicroelectronics |
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89 / 103 page  89/103 L9805 INSTRUCTION SET OVERVIEW (Cont’d) 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 sub-modes: 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 64Kb addressing space, and requires 1 byte after the opcode. 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 Indirect Indexed Instructions Function LD Load CP Compare AND, OR, XOR Logical Operations ADC, ADD, SUB, SBC Arithmetic Additions/Sub- structions operations BCP Bit Compare Short Indirect Indexed 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 Opera- tions SWAP Swap Nibbles CALL, JP Call or Jump subroutine Available Relative Direct/Indirect Instructions Function JRxx Conditional Jump CALLR Call Relative |
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