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-rw-r--r--kernel/uart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/uart.c b/kernel/uart.c
index 9fc7e28..80ff2b4 100644
--- a/kernel/uart.c
+++ b/kernel/uart.c
@@ -43,7 +43,7 @@ ISR(SIG_UART_RECV)
switch ((c = UDR)) {
case 'Z': /* zero */
for (p = (uint8_t *)RAMSTART; p <= (uint8_t *)RAMEND; p++)
- *p = 'A';
+ *p = 0;
/* FALLTHROUGH */
case 'R': /* reboot */
case '-': /* reboot */