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Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
MSB LSB
MSB LSB
C –
Z –
D –
I –
C –
Z –
D –
I –
S1C6200/6200A CORE CPU MANUAL EPSON 39
3 INSTRUCTION SET
DI Disable interrupts
DI
I ← 0
111101010111 F57H
VI
7
Not affected
Not affected
Not affected
Reset
Disables all interrupts.
DI
C flag 0 0
Z flag 1 1
D flag 0 0
I flag 1 0
EI Enable interrupts
EI
I ← 1
111101001000 F48H
VI
7
Not affected
Not affected
Not affected
Set
Enables all interrupts.
EI
C flag 1 1
Z flag 0 0
D flag 0 0
I flag 0 1