psxinterpreter: a bit more accurate Cause reg handling

[pcsx_rearmed.git] / libpcsxcore / r3000a.c

diff --git a/libpcsxcore/r3000a.c b/libpcsxcore/r3000a.c
index cccfa60..f5996ac 100644 (file)
--- a/libpcsxcore/r3000a.c
+++ b/libpcsxcore/r3000a.c
@@ -89,7 +89,7 @@ void psxException(u32 code, u32 bd) {
        }
 
        // Set the Cause
-       psxRegs.CP0.n.Cause = code;
+       psxRegs.CP0.n.Cause = (psxRegs.CP0.n.Cause & 0x300) | code;
 
        // Set the EPC & PC
        if (bd) {