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BIT
Test Bit
7-46
Cycles for a Single BIT Instruction
Program
Operand ROM DARAM SARAM External
DARAM 1 1 1 1+p
SARAM 1 1 1, 2
†
1+p
External 1+d 1+d 1+d 2+d+p
†
If the operand and the code are in the same SARAM block
Cycles for a Repeat (RPT) Execution of a BIT Instruction
Program
Operand ROM DARAM SARAM External
DARAM n n n n+p
SARAM n n n, n+1
†
n+p
External n+nd n+nd n+nd n+1+p+nd
†
If the operand and the code are in the same SARAM block
Example 1 BIT 0h,15 ;(DP = 6). Test LSB at 300h
Before Instruction After Instruction
Data Memory Data Memory
300h 4DC8h 300h 4DC8h
TC 0 TC 0
Example 2 BIT *,0,AR1 ;Test MSB at 310h, then set ARP = 1
Before Instruction After Instruction
ARP 0 ARP 1
AR0 310h AR0 310h
Data Memory Data Memory
310h 8000h 310h 8000h
TC 0 TC 1
Cycles