From e97d445908f39a3a1a215a824f52b283147e6195 Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Sun, 2 Oct 2022 09:49:48 -0600 Subject: 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. --- rtl/core/decode/data.sv | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'rtl/core/decode/data.sv') diff --git a/rtl/core/decode/data.sv b/rtl/core/decode/data.sv index 4dc51a4..a649440 100644 --- a/rtl/core/decode/data.sv +++ b/rtl/core/decode/data.sv @@ -3,13 +3,13 @@ module core_decode_data ( - input word insn, + input word insn, - output alu_decode decode, - output logic writeback, - update_flags, - restore_spsr, - undefined + output data_decode decode, + output logic writeback, + update_flags, + restore_spsr, + undefined ); alu_op op; -- cgit v1.2.3