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S3C9442 Datasheet(PDF) 20 Page - Samsung semiconductor

Part # S3C9442
Description  SAM88RCRI INSTRUCTION SET
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

S3C9442 Datasheet(HTML) 20 Page - Samsung semiconductor

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SAM88RCRI INSTRUCTION SET
S3C9442/C9444/F9444/C9452/C9454/F9454
6-20
DI — Disable Interrupts
DI
Operation:
SYM (2)
← 0
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:
Bytes
Cycles
Opcode
(Hex)
opc
1
4
8F
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.


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