我在理解具体指挥的实施时就失去了一点。
举例来说,指挥系统通过<0x00c6ba23>>。 缩略语
我试图找到ALU控制股对这一指示的投入。
从这一点看,我可以看到,我能够看到这一点。
010001110100011 (incorrect...)01101011000000000我将这一形象用于
我的问题是,我如何为这一职能找到ALU控制点和ALUOp控制点? 为什么可持续发展司的职能是,即使第3号数字显示为011而不是111?
......为什么可持续发展司的职能是,即使第3号数字显示零11而不是111?
011 是正确的。 参照标准必须是011,才能成为SD指示。 根据https://content.riscv.org/wp-content/uploads/2017/05/riscv-spec-v2.2.pdf>。 SD指令的形式如下:
| imm[11:5] | rs2 | rs1 | 011 | imm[4:0] | 0100011 |
如果假借的借方为111个,则该指示不会是SD。
......我如何为这一职能找到ALU控制线和ALUOp控制线?
由于这是统计司的一项指示,你可以在你在问询中提到的图表中直接读出在下表的SD行文。
如果你想要知道 从我的角度来看,ALUop只是人工界定的。 然后利用真相表来建立硬件,从而产生ALUop和其他指令信号。 See this MIPS doc p12 (RISC-V implementation should be similar,因为基本硬件设计方法相同)。 你们还可以看到真正的执行,以更好地了解问题(以下守则来自COD risv-v p675)。 www.un.org/Depts/DGACM/index_spanish.htm ->01; - 设计;10 也可参看Q&A和有关评论。
assign MemoryOp = (opcode == LD) || (opcode == SD); // a memory operation
/*
see https://ece.uwaterloo.ca/~cgebotys/NEW/ECE222/4.Processor.pdf p5 ALUOp encoding
*/
assign ALUOp = ((state === 1) || (state == 2) || ((state == 3) && MemoryOp)) ? 2 b00 :// add
((state== 3) && (opcode== BEQ)) ? 2 b01 : 2 b10 ; // subtract or use function code
I found a RISCV project on GitHub(here is the project), and tried to run a testbench.v file of this project with verilator.However, I encountered an error during the process. My Workspace is: ../ ├── ...
Consider: addi t0, zero, 3 addi a6, zero, 3 fast_multiply: ADD a0, zero, zero next_digit: ANDI a1, a6, 1 SRAI a6, a6, 1 BEQ a1, zero, skip ADD a0, a0, t0 skip: SLLI t0,...
Goal: given a section of machine code, wrap it as a function and create an (RISCV) .o object file. The function is something like void foo(), there s no arguments with void return type. and it call no ...
我在理解具体指挥的实施时就失去了一点。
I am newbie to linker script. In my design, RISCV has the code space and data space seperately. The code address is 0~0xFFFF, the data address is 0~0xFFFFFF. Here is my linker scprit: MEMORY { CODE (...
After seeing this C function: double clamp (double x ) { return x < 0 ? 0 : x > 1 ? 1 : x ; } I want to design a custom instruction named clp , it uses F extesnion. The instruction format I ...
Description I am a newbie in RVV and am rewriting some assembly functions using RVV1.0. Now I have encountered some problems about matrix transposition. Arm NEON provide the vtrn instructions, ...
Why immediate[0] is set to zero for jump and link instruction in riscv architecture? What is the main purpose do do that? I am not sure of whether the JAL is a PC relative instruction and even if it ...