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-rw-r--r--ports/qemu/mcu/rv32/interrupts.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/qemu/mcu/rv32/interrupts.c b/ports/qemu/mcu/rv32/interrupts.c
index ccb4644f9..804cebcd7 100644
--- a/ports/qemu/mcu/rv32/interrupts.c
+++ b/ports/qemu/mcu/rv32/interrupts.c
@@ -144,7 +144,7 @@ const char *lookup_cause(uint32_t mcause) {
case 11:
return exception_causes[6];
default:
- return (mcause >= 16) ?
+ return ((mcause & 0x7FFFFFFF) >= 16) ?
exception_causes[7] :
exception_causes[0];
}