conspiracion/rtl/core/cycles.sv, branch ce4302/p2 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. Rename cycles as control 2022-10-16T07:38:33+00:00 Alejandro Soto alejandro@34project.org 2022-10-16T07:38:33+00:00 2e6ce7931b690ccec1e41fa6847dfc1351c59d75 






Fix flags and writeback hazards
2022-10-16T05:33:34+00:00

Alejandro Soto
alejandro@34project.org

2022-10-16T05:33:34+00:00

d7747d9e030f965bd358bca5badb849f656147a8












Fix branch target calculation
2022-10-16T01:35:31+00:00

Alejandro Soto
alejandro@34project.org

2022-10-16T01:35:31+00:00

5b0872c995ddd7f581730ff9c7e145b5228e211d












Implement most memory transactions
2022-10-10T01:25:27+00:00

Alejandro Soto
alejandro@34project.org

2022-10-10T01:25:27+00:00

7d95ff01bcd8c42efe118fd1bddaabfca0e937eb












Implement LDR/STR decode
2022-10-08T21:34:46+00:00

Alejandro Soto
alejandro@34project.org

2022-10-08T21:34:46+00:00

dab6e68a8396475af5acbf53397f93c6b52e2e71












Rename EXECUTE cycle as ISSUE
2022-10-08T19:02:33+00:00

Alejandro Soto
alejandro@34project.org

2022-10-08T19:02:33+00:00

a0a12ef0c1bd6882d902a9d5938e7220e543b378












Fix pipeline hazards
2022-10-03T18:16:01+00:00

Alejandro Soto
alejandro@34project.org

2022-10-03T18:16:01+00:00

7e7c205367558b622fa56edaaa9c76491d57a4fa












Split decoding of flexible second operand out of data instructions
2022-10-02T19:23:22+00:00

Alejandro Soto
alejandro@34project.org

2022-10-02T19:23:22+00:00

63ec42cc245b2da9ab97cc4eef6bbd21e08cde07












Major shifter-ALU redesign
2022-10-02T15:49:48+00:00

Alejandro Soto
alejandro@34project.org

2022-10-02T15:49:48+00:00

e97d445908f39a3a1a215a824f52b283147e6195

The shifter unit now works in parallel with the ALU and is no longer
part of it. Instructions that use the shifter as input to the ALU will
now take an additional cycle, unless the control unit can detect a
"trivial shift" situation where the shifter's output will be the same as
its input. This change improves Fmax substantially.





The shifter unit now works in parallel with the ALU and is no longer
part of it. Instructions that use the shifter as input to the ALU will
now take an additional cycle, unless the control unit can detect a
"trivial shift" situation where the shifter's output will be the same as
its input. This change improves Fmax substantially.







Switch from operand forwarding to next insn stalls (improves Fmax)
2022-09-28T01:52:26+00:00

Alejandro Soto
alejandro@34project.org

2022-09-28T01:52:26+00:00

5e2f6be247018699d71d32887010830ba45b8349