![Samsung S3C80M4/F80M4 User Manual Download Page 139](http://html1.mh-extra.com/html/samsung/s3c80m4-f80m4/s3c80m4-f80m4_user-manual_3996174139.webp)
S3C80M4/F80M4
INSTRUCTION SET
6-37
DI
—
Disable Interrupts
DI
Operation:
SYM
(0)
←
0
Bit zero of the system mode control register, SYM.0, 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 = 01H:
DI
If the value of the SYM register is 01H, the statement "DI" leaves the new value 00H in the
register and clears SYM.0 to "0", disabling interrupt processing.
Before changing IMR, interrupt pending and interrupt source control
register, be sure DI state.
Summary of Contents for S3C80M4/F80M4
Page 1: ...S3C80M4 F80M4 8 BIT CMOS MICROCONTROLLERS USER S MANUAL Revision 1 ...
Page 44: ...ADDRESS SPACES S3C80M4 F80M4 2 20 NOTES ...
Page 84: ...CONTROL REGISTERS S3C80M4 F80M4 4 26 NOTES ...
Page 102: ...INTERRUPT STRUCTURE S3C80M4 F80M4 5 18 NOTES ...
Page 190: ...INSTRUCTION SET S3C80M4 F80M4 6 88 NOTES ...
Page 202: ...RESET and POWER DOWN S3C80M4 F80M4 8 6 NOTES ...
Page 216: ...8 BIT TIMER 0 S3C80M4 F80M4 11 4 NOTES ...
Page 220: ...8 BIT PULSE WIDTH MODULATION S3C80M4 F80M4 12 4 NOTES ...
Page 230: ...ELECTRICAL DATA S3C80M4 F80M4 13 10 NOTES ...