OTIR |
Block output with increment. | |||||||||
Function: | (C)
(HL); B
B - 1; HL
HL + 1 Repeat until B = 0 |
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Format: |
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byte 1: ED |
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byte 2: B3 |
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Description: | The contents of the memory location addressed by the HL register pair are output to the peripheral device addressed by the contents of the C register. The B register is decremented and the HL register pair is incremented. If B 0, the program counter is decremented by 2 and the instruction is re-executed. C supplies bits A0 to A7 of the address bus. B supplies (after decrementation) bits A8 to A15. |
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Data Flow: | ||||||||||
Timing: | B = 0: 4 M cycles; 16 T states: 8 usec @ 2 MHz B 0: 5 M cycles; 21 T states: 10.5 usec @ 2 MHz |
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Addressing Mode: | external |
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Flags: | ||||||||||
Example: | OTIR |
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OBJECT CODE |
Before: |
After: |
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