How many bits of control word is generated by CPU which supports 32 ALU operations and has set of 7 registers?
As instruction size given is 32 bits, remaining bit left for immediate operand = 32-18 = 14 bits. Maximum unsigned value using 14 bits = 2^14 – 1 = 16383 which is the answer.
How many operation selection lines are required for ALU which performs 32 operations?
Some of the data and control lines are shown with a slash and a number like 32. This indicates that the line is actually 32 lines in parallel, e.g. the result is 32-bits wide….1.9 Putting It All Together.
| c1 | c0 | Result |
|---|---|---|
| 0 | 1 | A OR B |
| 1 | 0 | A + B |
| 1 | 1 | A – B |
How many R type instructions are possible in a 32-bit architecture?
three different
All instructions in the MIPS R2000 Architecture are 32 bits in length. There are three different instruction formats: R-Type instructions, I-Type instructions, and J-Type instructions….J-Type Instruction Format (Jump):
| 31-26 | 25-0 |
|---|---|
| opcode | target |
What is 32bit address?
A 32-bit address is the address of a single byte. Thirty-two wires of the bus contain an address (there are many more bus wires for timing and control). Sometimes people talk about addresses like 0x2000, which looks like a pattern of just 16 bits. But this is just an abbreviation for the full 32-bit address.
What are the IA-32 processor’s three basic modes of operation?
The 1A32 processor has three operating modes:
- Real-address mode. This mode lets the processor to address “real” memory address.
- Protected mode. This is the preferred mode for a modern operating system.
- System management mode. This mode is designed for fast state snapshot and resumption.
What is 32-bit called?
BYTE – 8 bits, unsigned. WORD – 16 bits, unsigned. DWORD – 32 bits, unsigned. QWORD – 64 bits, unsigned.
What are ALU control lines?
The ALU will perform one of 5 functions (specified by three control lines). The ALUOp is a 2-bit control field. A 00 indicates add for loads and stores, a 01 is a subtract for branches (to see if two registers are equal), and a 10 indicates to use the funct field. Note the XXXXXX indicates that these bits are ignored.
What are 32-bit MIPS instruction formats?
MIPS has 32 registers, numbered from 0 to 31, each with 32 bits. To identify a register in MIPS we thus need 5 bits (25=32). MIPS instructions are encoded in binary, as 32-bit instruction words, called machine code. The layout of an instruction is called the instruction format.
What is Rs RT and RD?
— rs and rt are the first and second source registers. — rd is the destination register. — shamt is “shift amount” and is only used for shift instructions. — func is used together with op to select an arithmetic.