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PIC16F84A Datasheet(PDF) 61 Page - Microchip Technology |
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PIC16F84A Datasheet(HTML) 61 Page - Microchip Technology |
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61 / 124 page  PIC16F8X © 1998 Microchip Technology Inc. DS30430C-page 61 INCFSZ Increment f, Skip if 0 Syntax: [ label ] INCFSZ f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: (f) + 1 → (destination), skip if result = 0 Status Affected: None Encoding: 00 1111 dfff ffff Description: The contents of register 'f' are incre- mented. If 'd' is 0 the result is placed in the W register. If 'd' is 1 the result is placed back in register 'f'. If the result is 1, the next instruction is executed. If the result is 0, a NOP is exe- cuted instead making it a 2TCY instruc- tion . Words: 1 Cycles: 1(2) Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register 'f' Process data Write to destination If Skip: (2nd Cycle) Q1 Q2 Q3 Q4 No-Operat ion No-Opera tion No-Opera tion No-Operati on Example HERE INCFSZ CNT, 1 GOTO LOOP CONTINUE • • • Before Instruction PC = address HERE After Instruction CNT = CNT + 1 if CNT= 0, PC = address CONTINUE if CNT ≠ 0, PC = address HERE +1 IORLW Inclusive OR Literal with W Syntax: [ label ] IORLW k Operands: 0 ≤ k ≤ 255 Operation: (W) .OR. k → (W) Status Affected: Z Encoding: 11 1000 kkkk kkkk Description: The contents of the W register is OR’ed with the eight bit literal 'k'. The result is placed in the W register . Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read literal 'k' Process data Write to W Example IORLW 0x35 Before Instruction W = 0x9A After Instruction W = 0xBF Z = 1 |
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