diff --git a/src/libsys/boards/denano/board.c b/src/libsys/boards/denano/board.c
index b6fb7d7..e5b6fc2 100644
--- a/src/libsys/boards/denano/board.c
+++ b/src/libsys/boards/denano/board.c
@@ -27,6 +27,8 @@ con_if_t con_if =
 };
 
 uart_if_t const *dbg_uart = NULL;
+volatile uint32_t *pGpioData = (uint32_t*)SYS_GPIO_0_DATA;
+volatile uint32_t *pGpioDir = (uint32_t*)SYS_GPIO_0_DIR;
 
 void dbg_uart_setup();
 
@@ -50,6 +52,7 @@ void board_init(void)
 	interrupt_init();
 
 	// Do some initializations here
+	*pGpioDir = 0xFF;
 }
 
 extern void dbg_handler(struct xcptcontext * xcp);
@@ -87,8 +90,11 @@ inline void _dbg_writechar(uart_if_t const *pUart, char c)
 inline char _dbg_readchar(uart_if_t const *pUart)
 {
 	// busy read
-	while(!(SYS_UART_BIT_RX_AVAIL & *pUart->pCTRL));
-
+	while(!(SYS_UART_BIT_RX_AVAIL & *pUart->pCTRL))
+	{
+		(*pGpioData)++;
+	}
+	(*pGpioData) = 0;
 	return (*pUart->pDATA & 0xFF);
 
 }
diff --git a/src/libsys/xcpt.h b/src/libsys/xcpt.h
index fcb3120..04fcaee 100644
--- a/src/libsys/xcpt.h
+++ b/src/libsys/xcpt.h
@@ -43,10 +43,10 @@ typedef int (*fp_xcpt_t)(struct xcptcontext * xcp);
 
 
 #define PRINT_REG_CHG(tag_str, reg, reg_last)			\
-			dbg_puts(tag_str);				\
-			dbg_print_word(reg);			\
-			dbg_puts(reg != reg_last ? "*" : " ");			\
-			dbg_puts("  ");
+			sputs(tag_str);				\
+			print_word(reg);			\
+			sputs(reg != reg_last ? "*" : " ");			\
+			sputs("  ");
 
 
 // Public functions