Setting
The 8086 has no instruction to directly set or reset the trap flag. These operations are done by pushing the flag register on the stack, changing the trap flag bit to what the programmer wants it to be, and then popping the flag register back off the stack. The instructions to set the trap flag are:
- PUSHF ; Push flags on stack
- MOV BP,SP ; Copy SP to BP for use as index
- OR WORD PTR,0100H ; Set TF flag
- POPF ; Restore flag Register
Read more about this topic: Trap Flag
Famous quotes containing the word setting:
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—George Steiner (b. 1929)
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—Henry David Thoreau (1817–1862)