Ross Thompson
31ad619a21
Added possibly working OSU test bench as a precursor to running a bp benchmark.
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Fixed a few bugs with the function radix.
2021-03-17 11:06:32 -05:00
Ross Thompson
0637874cac
Cleanup of the branch predictor flush and stall controls.
2021-03-12 14:57:53 -06:00
Ross Thompson
b1d1f3995c
Improve version of the function radix which does not cause the wave file rendering to slow down.
2021-03-11 17:12:21 -06:00
Ross Thompson
149c9aa0f2
Added debug option to disable the function radix if not needed.
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Function radix slows the simulation by 70 to 76 s (8.5%) for the rv64i tests.
2021-03-10 15:17:02 -06:00
Ross Thompson
4d7e926dbb
I finally think I got the function radix debugger working across both 32 and 64 bit applications.
2021-03-10 14:43:44 -06:00
Ross Thompson
7b7cacbaf0
Finally I think I have the function radix mapping across all applications correctly. I still need to clean up the code a bit so it is easier to understand.
2021-03-10 11:00:51 -06:00
Ross Thompson
6191fcb1af
Shreya and I found a bug with the exeuction of JAL and JALR instructions. The link was only set in the writeback stage. Once the branch predictor started correctly predicting JAL(R)s the ALU and forwarding logic need to have the PCLinkE at the execution stage in case an instruction in the next two clocks need the data.
2021-02-26 20:12:27 -06:00
Ross Thompson
c2cf3f9fb6
Updating the test bench to include a function radix. Not done.
2021-02-26 19:43:40 -06:00
Ross Thompson
c856003f73
RAS needs to be reset or preloaded. For now I just reset it.
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Fixed bug with the instruction class.
Most tests now pass. Only Wally-JAL and the compressed instruction tests fail. Currently the bpred does not support compressed. This will be in the next version.
2021-02-19 20:09:07 -06:00
Ross Thompson
597dd1e7e6
Added FlushF to hazard unit.
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Fixed some typos with the names of signals in the branch predictor. They were causing signals to be not set. Note there is a modelsim flag which prevents it from compiling if a logic is undefined.
I will look this up and add it to the compiler.
2021-02-19 16:36:51 -06:00
Ross Thompson
06e975ac2f
minor change to wave file.
2021-02-19 09:08:13 -06:00
Ross Thompson
7d6093b302
Hacked the sram memory models to reset their internal registers. This allows the simulation to run but is only temporary.
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About 149307ns of simulation run.
2021-02-18 21:32:15 -06:00
Ross Thompson
8cbc9f7e51
Wrote a bash script to generate custom modelsim radix which maps instruction addresses into human readable lables.
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Once combined with some simulation verilog this will display the current function in modelsim.
2021-02-17 22:20:28 -06:00
