Question

1. In 32-bit mode, aside from the stack pointer (ESP), what other register points to variables on the stack?
2. Name at least four CPU status flags.
3. Which flag is set when the result of an unsigned arithmetic operation is too large to fit into the destination?
4. Which flag is set when the result of a signed arithmetic operation is either too large or too small to fit into the destination?
5. Which flag is set when an arithmetic or logical operation generates a negative result?
6. Which part of the CPU performs floating-point arithmetic?
On a 32-bit processor, how many bits are contained in each floating-point data register?

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In assembly x86 the processor status register contains the following flags (it is also given the bit index for each of them):
NT -- Nested Task flag (286+) – bit index 14
IF -- Interrupt-Enable Flag –bit index 9
AF -- Auxiliary Carry Flag –bit index 4
IOPL -- I/O Privilege Level (286+) - bits 12 and 13
TF -- Trap Flag – bit 8...

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