diff options
| author | Alejandro Soto <alejandro@34project.org> | 2022-10-02 09:49:48 -0600 |
|---|---|---|
| committer | Alejandro Soto <alejandro@34project.org> | 2022-10-02 09:49:48 -0600 |
| commit | e97d445908f39a3a1a215a824f52b283147e6195 (patch) | |
| tree | 74baa4d5ee535c12dbbe400f8e6c2fda342b8e37 /rtl/core/psr.sv | |
| parent | 5e2f6be247018699d71d32887010830ba45b8349 (diff) | |
Major shifter-ALU redesign
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.
Diffstat (limited to 'rtl/core/psr.sv')
| -rw-r--r-- | rtl/core/psr.sv | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/rtl/core/psr.sv b/rtl/core/psr.sv index bc682c1..2c0d48f 100644 --- a/rtl/core/psr.sv +++ b/rtl/core/psr.sv @@ -7,11 +7,10 @@ module core_psr alu_v_valid, input psr_flags alu_flags, - output psr_flags flags + output psr_flags flags, + next_flags ); - psr_flags next_flags; - always_comb begin next_flags = flags; |