Midterm.fall07

SPARC Architecture, Assembly Language Programming, and C (2nd Edition)

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1 Name _________________________ Student ID __________________ Signature_______________________ cs30x_______ CSE 30 Fall 2007 Midterm Exam 1. Number Systems ___________________ (15 points) 2. Binary Addition/Condition Code Bits/Overflow Detection ___________________ (12 points) 3. Branching ___________________ (20 points) 4. Bit Operations / C Runtime Environment ___________________ (17 points) 5. Parameter Passing and Return Values (Stack Variables) ___________________ (12 points) 6. Local Variables, The Stack and Return Values ___________________ (15 points) 7. Load/Store/Memory ___________________ (9 points) SubTotal ___________________ (100 points) Extra Credit ___________________ (6 points) Total ___________________
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2 1. Number Systems Convert 0xF939 (2’s complement, 16-bit word) to the following. (6 points) binary ____________________________________ octal 0 ___________________________________ decimal ____________________________________ Convert -328 to the following (assume 16-bit word). Express answers in hexadecimal. (6 points) sign-magnitude 0x _______________________________________________ 1’s complement 0x _______________________________________________ 2’s complement 0x _______________________________________________ Convert +477 to the following (assume 16-bit word). Express answers in hexadecimal. (3 points) sign-magnitude 0x _______________________________________________ 1’s complement 0x _______________________________________________ 2’s complement 0x _______________________________________________ 2. Binary Addition/Condition Code Bits/Overflow Detection Indicate what the condition code bits are when adding the following 8-bit 2’s complement numbers. (12 points) 11010111 11000101 01111111 +10001001 +00111001 +00000001 --------- --------- --------- N Z V C N Z V C N Z V C ----------------- ----------------- ----------------- | | | | | | | | | | | | | | | ----------------- ----------------- -----------------
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3 3. Branching (20 points)
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