Ross Thompson
7743d8edc3
Cleanup of the branch predictor flush and stall controls.
2021-03-12 14:57:53 -06:00
Ross Thompson
318b642359
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
f92f766573
Added debug option to disable the function radix if not needed.
...
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
dcae90e3ad
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
50a92247b3
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
7592a0dacb
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
37e6a45d76
Updating the test bench to include a function radix. Not done.
2021-02-26 19:43:40 -06:00
Ross Thompson
9b3637bd87
RAS needs to be reset or preloaded. For now I just reset it.
...
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
00de91cc87
Added FlushF to hazard unit.
...
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
f25de68b7d
minor change to wave file.
2021-02-19 09:08:13 -06:00
Ross Thompson
c6ebe7733b
Hacked the sram memory models to reset their internal registers. This allows the simulation to run but is only temporary.
...
About 149307ns of simulation run.
2021-02-18 21:32:15 -06:00
Ross Thompson
de9e383bc6
Wrote a bash script to generate custom modelsim radix which maps instruction addresses into human readable lables.
...
Once combined with some simulation verilog this will display the current function in modelsim.
2021-02-17 22:20:28 -06:00
