Difference between revisions of "Z80:Opcodes:LDDR"
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Latest revision as of 22:05, 5 February 2016
Repeats the instruction LDD (Does a LD (DE),(HL) and decrements each of DE, HL, and BC) until BC=0. Note that if BC=0 before the start of the routine, it will try loop around until BC=0 again.
Contents
Syntax
LDDR
Effects
P/V is reset.
Uses
Copying over sections of data.
T-States
| BC is not 0 | 21 |
| BC equals 0 | 16 |
See Also
