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Linux-capable SoC platform with a custom ARMv4 quad-core SMP CPU, coherent caches, and a 3D graphics accelerator. Synthesizes for Terasic DE-series FPGA boards. Simulated with Verilator.
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2022-10-23
Add sim test: stack
Alejandro Soto
2022-10-23
Fix ldm writeback
Alejandro Soto
2022-10-23
Fix zero-extended (lsr) vs sign-extended (asr) shifts
Alejandro Soto
2022-10-23
Fix bad decoding of second-operand immediates
Alejandro Soto
2022-10-18
Add sim test: control_flow
Alejandro Soto
2022-10-18
Implement branch with link
Alejandro Soto
2022-10-18
Add sim test: mult
Alejandro Soto
2022-10-18
Print simulator command line on test failure
Alejandro Soto
2022-10-18
Support skipping tests
Alejandro Soto
2022-10-18
Support program counter in --dump-regs
Alejandro Soto
2022-10-18
Implement undefined instruction exceptions
Alejandro Soto
2022-10-18
Implement register initialization in sim
Alejandro Soto
2022-10-17
Break sub-100MHz critical path involving wb_alu_flags
Alejandro Soto
2022-10-17
Add instruction list
Alejandro Soto
2022-10-17
Move pitfalls.txt to doc/
Alejandro Soto
2022-10-17
Add LICENSE
Alejandro Soto
2022-10-17
Break false dependency on r0 for MOV/MVN
Alejandro Soto
2022-10-17
Use negative clock edge for register file in Verilator builds
Alejandro Soto
2022-10-17
Fix unsafe decode signals
Alejandro Soto
2022-10-17
Improve sim.py output
Alejandro Soto
2022-10-17
Fix data hazards in nzcv and PC increment
Alejandro Soto
2022-10-16
Implement register dumps
Alejandro Soto
2022-10-16
Add C simulation testbench
Alejandro Soto
2022-10-16
Add original simulation testbench
Alejandro Soto
2022-10-16
Add flake.nix
Alejandro Soto
2022-10-16
Implement simulation testbenches
Alejandro Soto
2022-10-16
Rename cycles as control
Alejandro Soto
2022-10-16
Move isa.sv to core/decode
Alejandro Soto
2022-10-16
Set core clock target to 100MHz
Alejandro Soto
2022-10-15
Fix flags and writeback hazards
Alejandro Soto
2022-10-15
Fix branch target calculation
Alejandro Soto
2022-10-15
Rework bus architecture
Alejandro Soto
2022-10-09
Implement most memory transactions
Alejandro Soto
2022-10-09
Pipeline flags writeback (breaks combinational data dependencies)
Alejandro Soto
2022-10-08
Fix writes to PC
Alejandro Soto
2022-10-08
Implement LDR/STR decode
Alejandro Soto
2022-10-08
Rename EXECUTE cycle as ISSUE
Alejandro Soto
2022-10-03
Fix pipeline hazards
Alejandro Soto
2022-10-02
Split decoding of flexible second operand out of data instructions
Alejandro Soto
2022-10-02
Make the fetch stage use the bus arbiter
Alejandro Soto
2022-10-02
Add MMU bus arbiter
Alejandro Soto
2022-10-02
Use @(posedge clk) in register files
Alejandro Soto
2022-10-02
Major shifter-ALU redesign
Alejandro Soto
2022-09-27
Switch from operand forwarding to next insn stalls (improves Fmax)
Alejandro Soto
2022-09-27
Fix branching bugs
Alejandro Soto
2022-09-27
Add simple loop execution testbench
Alejandro Soto
2022-09-27
Implement branching in fetch stage
Alejandro Soto
2022-09-26
Fix MVN (not instead of neg)
Alejandro Soto
2022-09-26
Fix writeback timing
Alejandro Soto
2022-09-26
Fix prefetch PC not advancing when buffer is empty
Alejandro Soto
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