2110 FINAL REVIEW!!!!

Front

Convert the following decimal number to hexadecimal (unsigned): 250

Back

xFA

Front

What gate is this? If we add an inverter, then what gate would we have? Options: NAND, OR; NAND, AND; NOR, OR; NOR, AND

Back

NOR, OR

Front

What does the circuit do? Options: Negates A if B==7, negates B if B==0, outputs 0 otherwise; Negates B if B==7, negates A if B==0, outputs 0 otherwise; Negates A if B==7, outputs 0 if B==0, negates B otherwise; Negates B if B==7, outputs 0 if B==0, negates A otherwise

Back

Negates B if B==7, negates A if B==0, outputs 0 otherwise

Front

Which of the following K-Maps has correct groupings? (Yellow-green and yellow-orange are overlaps.) Options: A, B, C, D

Back

Front

Typically, a register is an example of _______ logic and is made up of _______.

Back

Sequential, D Flip Flop

Front

In a D flip-flop, what happens when the clock edge jumps from 0 to 1 and the input is high?

Back

Depends on the location of the not gate

Front

What differentiates LD from LDI and LDR?

Back

LD directly loads the value from memory using a PC offset, LDR does the same with a base register offset, and LDI loads indirectly.

Front

What is the range a LD instruction can access assuming PC* is at x3000 (we’ve already performed FETCH)? Options: [x2F00, x30FF], [2E00, x31FF], [x2F00, x3100], [x2E00, x3200]

Back

[x2F00, x30FF]

Front

If an LC-3 program uses the directive .blkw 10, what happens in memory?

Back

Ten addresses of memory(words) are reserved, uninitialized

Front

When a device attempts to interrupt the current process, which option is true? Options: The INT signal is always set to 1, and the current process will be interrupted to start executing the device’s interrupt handler. The priority of the device will be compared to the current process’s priority. If the device’s priority value is lower than the current processes (PSR[10:8]), then the INT signal is set to 1 and the current process is interrupted to start executing the device’s interrupt handler. The priority of the device will be compared to the current process’s priority. If the device’s priority value is higher than the current process is interrupted to start executing the device’s interrupt handler. The device will interrupt when the current process finishes execution, which will free up the processor for the device to now execute its interrupt handler.

Back

The priority of the device will be compared to the current process’s priority. If the device’s priority value is higher than the current process is interrupted to start executing the device’s interrupt handler.