From 5ad8b7c803bcb9d0fdccf55a7643ccd7ebb8923b Mon Sep 17 00:00:00 2001 From: Christopher Lu Date: Sun, 28 Dec 2008 03:21:43 -0500 Subject: [PATCH 1/1] Decode.v: shifter now less incorrect --- Decode.v | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/Decode.v b/Decode.v index 85aa439..44a948c 100644 --- a/Decode.v +++ b/Decode.v @@ -310,10 +310,10 @@ module SuckLessShifter( /* do a barrel shift */ assign stage1 = amt[5] ? {is_rot ? oper : {32{pushbits}}, oper[31]} : {oper, carryin}; - assign stage2 = amt[4] ? {is_rot ? stage1[15:0] : {16{pushbits}}, stage1[31:16], stage1[16]} : stage1; - assign stage3 = amt[3] ? {is_rot ? stage2[7:0] : {8{pushbits}}, stage2[31:8], stage2[8]} : stage2; - assign stage4 = amt[2] ? {is_rot ? stage3[3:0] : {4{pushbits}}, stage3[31:4], stage3[4]} : stage3; - assign stage5 = amt[1] ? {is_rot ? stage4[1:0] : {2{pushbits}}, stage4[31:2], stage4[2]} : stage4; - assign {res, carryout} = amt[0] ? {is_rot ? stage4[0] : pushbits, stage5[31:1], stage5[1]} : stage5; + assign stage2 = amt[4] ? {is_rot ? stage1[15:0] : {16{pushbits}}, stage1[31:16], stage1[15]} : stage1; + assign stage3 = amt[3] ? {is_rot ? stage2[7:0] : {8{pushbits}}, stage2[31:8], stage2[7]} : stage2; + assign stage4 = amt[2] ? {is_rot ? stage3[3:0] : {4{pushbits}}, stage3[31:4], stage3[3]} : stage3; + assign stage5 = amt[1] ? {is_rot ? stage4[1:0] : {2{pushbits}}, stage4[31:2], stage4[1]} : stage4; + assign {res, carryout} = amt[0] ? {is_rot ? stage5[0] : pushbits, stage5[31:1], stage5[0]} : stage5; endmodule -- 2.39.2