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Chapter 18 Instruction Operations
18
MOV
SEL
NOP
EI
DI
Operation
Mnemonic
Operand
No. of
bytes
Flags
STBC, #byte
4
STBC
← byte
RBn
2
RBS1 – 0
← n, n = 0 – 3
1
No operation
1
IE
← 1 (Enable interrupts)
1
IE
← 0 (Disable interrupts)
Z
AC
CY
(14) CPU control instructions: MOV, SEL, NOP, EI, DI
