Commodore 64 - Page 59

BEQ
Branch on Result Equal to Zero
Operation: Branch on Z = 1
N ZC I DV
Addressing
Mode
Assembly Language
Form
OP
CODE
No.
Bytes
No.
Cycles
Relative
BEQ aa
FO
2
2*
*Add 1 if branch occurs to same page.
Add 2 if branch occurs to next page.
Note: AIM 65 will accept an absolute address as the operand (instruction format BEQ aaaa), and
convert it to a relative address.
BIT
Test Bits in Memory with Accumulator
Operation: A M, M7 -> N, M6 V
Bit 6 and 7 are transferred to the Status Register. If the
result of A M is zero then Z = 1, otherwise Z = 0
N Z C I D V
m 7 j
-------- m6
Addressing
Assembly Language
OP
No.
No.
Mode
Form
CODE
Bytes
Cycles
Zero Page
BIT aa 24
2
3
J Absolute
BIT aaaa 2C
3
4
BMI
Branch on Result Minus
Operation: Branch on N = 1
N ZC I DV
Addressing
Mode
Assembly Language
Form
OP
CODE
No.
Bytes
No.
Cycles
Relative
BMI aa
30 2
2*
•Add 1 if branch occurs to same page.
Add 2 if branch occurs to different page.
Note: AIM 65 will accept an absolute address as the operand (instruction format BMI aaaa), and
convert it to a relative address.
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