Commit graph

76 commits

Author SHA1 Message Date
Aadi Desai 5e62dd82d8 Add bus vcd to gitignore, fix missing case in bus 2020-12-16 14:08:28 -08:00
Aadi Desai d17060b0a1 Add missing end to if statement 2020-12-16 13:54:01 -08:00
Aadi Desai da0c9aba01 Fix {} for bit duplication, remove module name from endmodule 2020-12-16 13:38:09 -08:00
Aadi Desai 20880f6ab2 Complete avalon bus memory
Read and write logic (including partial writes using byte enables) complete. Address is always word aligned, as handled within bus wrapper.
2020-12-16 19:20:48 +00:00
Aadi Desai f5fea77ea7 General structure of bus memory
Read and Write logic to be added
2020-12-16 08:42:26 -08:00
Aadi Desai d8c918c9b4 Merge branch 'main' into bus_wrapper 2020-12-16 15:41:56 +00:00
jl7719 ebe33ce56a Passes all tests 2020-12-16 15:29:04 +00:00
Jeevaha Coelho 7185f7e7e6 Fixed BGEZAL 2020-12-16 07:00:46 -08:00
Aadi Desai 67682ecfde Create basic bus memory block
I/O, parameters and initial setup block included
2020-12-16 14:07:43 +00:00
Jeevaha Coelho 2673e23137 FIxed PC! 2020-12-16 05:21:57 -08:00
jl7719 ad68ab0974 Debugging and debugging
PC, Jump instr, branches
2020-12-16 12:29:22 +00:00
jl7719 0891f7e653 Debug mult/div to work
it works now
2020-12-16 08:38:46 +00:00
jl7719 4ff160db1a Fix syntax errors from mult/div 2020-12-16 05:04:45 +00:00
Jeevaha Coelho 90917f7566 Updated PC, Harv, ALU, to work w/ MULT(U), DIV(U) 2020-12-15 13:48:28 -08:00
jl7719 85efff275a Fix program counter taking two cycles for each instr 2020-12-15 15:53:30 +00:00
jl7719 fc5c8a17f5 Fix signed error in alu block 2020-12-15 15:19:51 +00:00
Jeevaha Coelho 85ba783a69 Fixed signing error in alu and added excel file 2020-12-15 05:21:37 -08:00
Jeevaha Coelho 5df8a72ca1 fixed naming convention errors in pc and harvard 2020-12-15 03:16:01 -08:00
jl7719 51dbe68ea8 Fix running on different environment issue
Now completely shifted to Ubuntu 18.04 setup should work for everyone
2020-12-14 17:38:39 +00:00
jl7719 7150487472 Rename initialisation files 2020-12-13 14:54:53 +09:00
jl7719 943745a1e0 Tested all that can be tested for now
Mult/Div, Branch/Jump Linking, J needs implementation before testing and store to be tested when switched to bus
2020-12-13 14:40:16 +09:00
Aadi Desai 1123477690 Mask address during partial writes 2020-12-13 00:15:15 +00:00
Aadi Desai 50b9dba651 Added partial writes
SH and SB were not accounted for in previous version, partial reads are handled within regfile
2020-12-12 16:49:02 +00:00
jl7719 c31344c55f More testcases, testing, debugging 2020-12-13 01:25:36 +09:00
jl7719 14ad7fa0ce Update program counter
Logic for instructions with linking not implemented. Can do basic branch delay slots. More left to do with return register
2020-12-12 15:59:14 +09:00
Aadi Desai af7645b5b0 Completed wrapper, to be tested 2020-12-11 19:45:00 +00:00
Aadi Desai 714b74ec83 Update mips_cpu_bus.v
Added fetch/execute states. All instructions not using data memory should function
2020-12-11 19:13:11 +00:00
Aadi Desai 7997076be7 Basic Wrapper, Logic to be added 2020-12-11 10:56:34 +00:00
jl7719 3594365a25 Create branch jl7719
Can test for normal pc incrementing instr
2020-12-11 19:45:13 +09:00
jl7719 7ffd8fb400 Add testcases and ref outputs for addiu, and, andi 2020-12-11 15:17:43 +09:00
jl7719 04b1ed4fed Update control and memory
Fixed some errors when testing
2020-12-10 22:27:08 +09:00
jl7719 84adff2ed1 Update memory
No longer need the massive memory
2020-12-10 19:14:16 +09:00
jc4419 3a2fde81b2 Merge branch 'main' of https://github.com/supleed2/AM04_CPU into main 2020-12-09 16:27:20 +04:00
jc4419 4b8a56ee2f Fixed if logic for control 2020-12-09 16:24:21 +04:00
jl7719 c5aed43ab4 Update to test each instruction with a small memory 2020-12-09 16:47:58 +09:00
Aadi Desai 6becea322f Update mips_cpu_regfile.v
Regfile should now compile, write is skipped if $0 is the destination register
2020-12-08 13:23:08 +00:00
jc4419 9de2b59bbb Updated Harvard, ALU, PC, Control, and Regfile 2020-12-08 01:46:01 +04:00
jc4419 8f5e582f33 Updated ALU - Minor Syntax Fixes 2020-12-07 18:18:19 +04:00
jc4419 2ab6ff12eb Merge branch 'main' of https://github.com/supleed2/AM04_CPU into main 2020-12-07 15:55:12 +04:00
jc4419 9198c4f51b Updated ALU and Control 2020-12-07 15:49:44 +04:00
Aadi Desai d347475b64 Update mips_cpu_regfile.v
lb, lbu, lh, lhu now  select data according to address alignment
$0 is assigned to 0, may cause an error when written to, unknown.
2020-12-06 17:42:23 +00:00
jl7719 c5167645e7 Fix overall w.r.t iverilog compiler error 2020-12-06 15:44:58 +09:00
jc4419 a2bcf3ed1b Updated ALU 2020-12-05 23:37:01 +04:00
jl7719 56b5b1aa89 Merge branch 'main' of https://github.com/supleed2/AM04_CPU into main 2020-12-04 23:45:16 +09:00
jl7719 411f89110f Add testbench related files 2020-12-04 23:44:48 +09:00
Aadi Desai 847bf92add Fix regfile hazard from storing when inputs change 2020-12-02 19:13:41 +00:00
Aadi Desai f2f8e05010 PC logic updated
PC now has a delay into instr_mem to match MIPS32 spec and pc resets/initialises to MIPS32 reset vector
2020-12-02 17:23:28 +00:00
jl7719 10af46a352 Update mips_cpu_memory.v 2020-12-02 23:41:04 +09:00
Ibrahim 64b9d16776 Merge branch 'main' of https://github.com/supleed2/AM04_CPU into main 2020-12-02 14:34:35 +00:00
Ibrahim 1f1cb53352 Changed From ALUZero to Cond 2020-12-02 14:33:42 +00:00