
UM008007-0715 Z80 Instruction Description
Z80 CPU
User Manual
135
Condition Bits Affected
S is not affected.
Z is not affected.
H is reset.
P/V is reset.
N is reset.
Example
The HL register pair contains 1114h, the DE register pair contains 2225h, the BC register
pair contains
0003h, and memory locations contain the following data.
Upon the execution of an LDDR instruction, the contents of the register pairs and memory
locations now contain:
(1114h) contains A5h (2225h) contains C5h
(1113h) contains 36h (2224h) contains 59h
(1112h) contains 88h (2223h) contains 66h
HL contains 1111h
DE contains 2222h
DC contains 0000h
(1114h) contains A5h (2225h) contains A5h
(1113h) contains 36h (2224h) contains 36h
(1112h) contains 88h (2223h) contains 88h
Kommentare zu diesen Handbüchern