CPIR
HL + 1; BC
BC - 1Repeat until BC = 0 or A = [HL]
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 |
0 and A [HL], the program counter is decremented by 2 and the instruction is re-executed.
OBJECT CODE
CPIR |
Block compare with increment. | |||||||||
| Function: | A - [HL]; HL
HL + 1; BC
BC - 1 Repeat until BC = 0 or A = [HL] |
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| Format: |
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byte 1: ED |
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byte 2: B1 |
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| Description: | The contents of the memory location addressed by the HL register pair are subtracted from the contents of the accumulator and the result is discarded. Then the HL register pair is incremented and the BC register pair is decremented. If BC 0 and A [HL], the program counter is decremented by 2 and the instruction is re-executed. |
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| Data Flow: | ||||||||||
| Timing: | ||||||||||
| Addressing Mode: | ||||||||||
| Flags: | |
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| Example: | ||||||||||
OBJECT CODE |
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