Di Disable Interrupts - Samsung S3C9444 User Manual

SAM88RCRI INSTRUCTION SET
DI
— Disable Interrupts
DI
SYM (2) ← 0
Operation:
Bit zero of the system mode register, SYM.2, is cleared to "0", globally disabling all interrupt
processing. Interrupt requests will continue to set their respective interrupt pending bits, but the
CPU will not service them while interrupt processing is disabled.
Flags: No flags are affected.
Format:
opc
Example: Given: SYM = 04H:
DI
If the value of the SYM register is 04H, the statement "DI" leaves the new value 00H in the register
and clears SYM.2 to "0", disabling interrupt processing.
6-20
S3C9444/F9444_UM_REV1.10
Bytes Cycles Opcode
1 4
(Hex)
8F