DINT
6-85
DINT Disable Maskable Interrupts (Set INTM Bit)
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
DINT 0011 1011 0001 0000 X − 2
Note: This instruction is an alias for the “SETC mode” operation with the ”mode” field = INTM.
Operands None
Description Disable all maskable CPU interrupts by setting the INTM status bit. DINT has
no effect on the unmaskable reset or NMI interrupts.
Flags and
Modes
INTM
The instruction sets this bit to disable interrupts.
Repeat This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Example
; Make the operation ”VarC = VarA + VarB” atomic:
DINT ; Disable interrupts (INTM = 1)
MOVL ACC,@VarA ; ACC = VarA
ADDL ACC,@VarB ; ACC = ACC + VarB
MOVL @VarC,ACC ; Store result into VarC
EINT ; Enable interrupts (INTM = 0)