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-rw-r--r--mips/mips_insts.sail2
1 files changed, 1 insertions, 1 deletions
diff --git a/mips/mips_insts.sail b/mips/mips_insts.sail
index 42822550..ec4e8f8e 100644
--- a/mips/mips_insts.sail
+++ b/mips/mips_insts.sail
@@ -1370,7 +1370,7 @@ function clause execute (MTC0(rt, rd, sel, double)) = {
switch (rd, sel)
{
case (0b00100,0b010) -> CP0UserLocal := reg_val
- case (0b00111,0b000) -> CP0HWREna := (reg_val[31..29] : 0b0000000000000000000000000 : reg_val[4..0])
+ case (0b00111,0b000) -> CP0HWREna := (reg_val[31..29] : 0b0000000000000000000000000 : reg_val[3..0])
case (0b01001,0b000) -> CP0Count := reg_val[31..0]
case (0b01011,0b000) -> { (* 11, sel 0: Compare reg *)
CP0Compare := reg_val[31..0];