System information

3.5.2 Immediate Operand Instructions
Several instructions are available that load single- or double-precision registers or
single-precision memory cells with constant values, along with instructions that perform
immediate arithmetic or logical operations on the accumulator (register A). Table 3-5 describes
the immediate operand instructions.
Table 3-5. Immediate Operand Instructions
Form with
Bit Values Example Meaning
MVI e3,e8 MVI B,255 Move immediate data to register A, B, C, D, E, H, L,
or M (memory)
ADI e8 ADI 1 Add immediate operand to A without carry
ACI e8 ACI 0FFH Add immediate operand to A with carry
SUI e8 SUI L + 3 Subtract from A without borrow (carry)
SBI e8 SBI L AND 11B Subtract from A with borrow (carry)
ANI e8 ANI $ AND 7FH Logical and A with immediate data
XRI e8 XRI 1111$0000B Exclusive or A with immediate data
ORI e8 ORI L AND 1+1 Logical or A with immediate data
CPI e8 CPI 'a' Compare A with immediate data, same as SUI except
register A not changed.
LXI e3,e16 LXI B, 100H Load extended immediate to register pair. e3 must be
equivalent to B, D, H,or SP.
3.5 Operation Codes CP/M Operating System Manual
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