Assembly

[Militie]

Hey everyone,

I have to code some assignments in pep/8 assembly. Does anyone here know pep/8 or assembly in general. I am having some trouble starting off on some of the assignments and I could really use some help.

For example, here is one of the questions.

Implement a new unary instruction in place of NOP0 called ASL2 that does two left shifts on the accumulator. V should remain unchanged, but N and Z should correlate with the new value in the accumulator, and C should be the carry from the second shift. Write a program that tests all the features of the new instruction.

Now I am a bit confused when I shift the accumulator to the left, I would use ASLA, but I then need to somehow store the value in the accumulator, so as the trap returns it won't revert back to the value that it had before the trap was called?

Any help is appreciated!

Thanks,

Militie