worked on print.dsa and maths/core.dsa

resources/dsa/test.dsa

@@ -1,7 +1,8 @@
-include print "./lib/print.dsa"
+include print "./lib/io/print.dsa"
 
+dw idt: 0xFFFF0000
 dw stack: 0x10000
-db string: "Hello world"
+db interrupt: "INT: Hello world"
 
 init:
 	// set up a stack.
@@ -9,10 +10,24 @@ init:
 	mov bpr, spr
 
 start:
-	lwi string, rg1
+	ldw idt, idr
 
-	push rg1
-	call print::print
-	pop rg1
+	lwi handle_hard_fault, rg0
+	stw rg0, idr, 4
 
+	
+	lli 0x20, rg0
+	push rg0
+	call print::print_hex_byte
+	pop zero
+	hlt
+
+
+dw hard_fault_err: "FATAL: Illegal Instruction or Memory Access!"
+handle_hard_fault:
+	call print::reset
+	lwi hard_fault_err, rg0
+	push rg0
+	call print::print
+	pop zero
 	hlt