Your TAs will be available for email questions on Friday, April 2 and Monday, April 5. Remember that as posted earlier, no emails will be answered during the weekend (April 3 – April 4). Hopefully, all the Klueless Khans are hard at work with their Quiz04!

Only two more screencasts left for this semester!

In your Quiz04, only preserve R11 on the stack. In particular don’t preserve R14, since is the output register according to the contract. If you preserve it (push in on entering the subroutine and then pop on return) then you will clobber your output and won’t get any output when you return from the subroutine. So, only preserve R11 in your subroutine, no other registers.

Names appear in the memory browser only if you have a PC and you have downgraded your compiler.

See the following documents on our website (Lessons tab). It was covered in some early screencast, forgot which one.

Downgrading Compiler

UpgradingTheCompiler_ForMacUsers

In my opinion, it is not worth the trouble to downgrade the compiler. First, you can only do it if you have a PC, second, all it gives you is that you can see the names of the variables in the memory browser. The cost is that you are using a very old compiler without the latest patches and updates.

You can not calculate Log2 in your assembly code.  In your main program, just used the value of Log2 as input to the subroutine. So, if you want to divide by 8 then just enter 3 as input (Since Log2(8) = 3)

There was a typo about the due date in the Quiz04 document. It has been corrected in the new online version.

Due Date, Sunday, April 4, 11:59pm.
You have plenty of time (10 days) to do this quiz, don’t leave it to the last moment. Many students again waited till the last day to do the midterm, and I had a swarm of emails during the weekend, mostly last minute emails on Sunday. So for this quiz, emails during the weekend of Saturday, April 3, and Sunday, April 4, will not be answered. Start working on the quiz now.