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PIC16C925-S/CL датащи(PDF) 124 Page - Microchip Technology |
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PIC16C925-S/CL датащи(HTML) 124 Page - Microchip Technology |
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124 / 182 page ![]() PIC16C925/926 DS39544A-page 122 Preliminary 2001 Microchip Technology Inc. GOTO Unconditional Branch Syntax: [ label ] GOTO k Operands: 0 ≤ k ≤ 2047 Operation: k → PC<10:0> PCLATH<4:3> → PC<12:11> Status Affected: None Encoding: 10 1kkk kkkk kkkk Description: GOTO is an unconditional branch. The eleven-bit immediate value is loaded into PC bits <10:0>. The upper bits of PC are loaded from PCLATH<4:3>. GOTO is a two-cycle instruction. Words: 1 Cycles: 2 Q Cycle Activity: Q1 Q2 Q3 Q4 1st Cycle Decode Read literal ’k’ Process data Write to PC 2nd Cycle No Operation No Operation No Operation No Operation Example GOTO THERE After Instruction: PC = Address THERE INCF Increment f Syntax: [ label ] INCF f [,d] Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: (f) + 1 → (destination) Status Affected: Z Encoding: 00 1010 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’. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register ’f’ Process data Write to destination Example INCF CNT, 1 Before Instruction: CNT = 0xFF Z= 0 After Instruction: CNT = 0x00 Z= 1 |
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