CODEWITHSUNDEEP
assembly8051microprocessors
Baran
Baran

Reputation: 1408

Compare bits in assembly

How can I compare two bits if they are equal or not in 8051? I need to jump if two bits are equal. I have a value in a register and I am searching if this value is equal another constant value. Example: I have "EDh" value and I have another value in R0 register.

Upvotes: 2

Views: 8526

Answers (2)

Oliver Charlesworth
Oliver Charlesworth

Reputation: 272497

To compare a register and an immediate (a constant), and then conditionally jump, you can use the CJNE instruction.

Upvotes: 5

Jim Mischel
Jim Mischel

Reputation: 133995

It's been a long time since I worked with the 8051. But I seem to remember that the CJNE instruction was quite useful.

Upvotes: 3

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