uart functionality (delay) + interrupt tested

[cortex-from-scratch] / ivt.c

diff --git a/ivt.c b/ivt.c
index ba617ef..1b4cb9b 100644 (file)
--- a/ivt.c
+++ b/ivt.c
@@ -26,6 +26,8 @@ void ivt_set_gate(unsigned char num, void * isr(), short pri) {
 /* Dummy interrupt */
 void * dummy_isr() {
 
+       uart_puts("EXCEPTION X: SYSTEM HALTED\n");
+       for(;;);
 }
 
 /* Initialize interrupt vector  */
@@ -41,6 +43,9 @@ void ivt_init() {
        ivt_set_gate(1, dummy_isr, 0);
        ivt_set_gate(2, dummy_isr, 0);
        ivt_set_gate(3, dummy_isr, 0);
+       ivt_set_gate(4, dummy_isr, 0);
+       ivt_set_gate(5, dummy_isr, 0);
+       ivt_set_gate(6, dummy_isr, 0);
 
        /* the vector table starts at 0x0. Since the address 0x0 point to 
         * bootcode, it is on ROM or FLASH. The vector table can be