refactor & fixed assembler path handling

resources/dsa/lib/fib.dsa

@@ -0,0 +1,18 @@
+fib_n:
+    pop ret
+    pop rg0 // n
+
+    lli 0, rg1
+    lli 1, rg2
+    
+start:
+    add rg1, rg2, acc
+    push rg1
+    mov rg2, rg1
+    mov acc, rg2
+    
+    cmp rg0, zero
+    dec rg0
+    
+    jgt start
+    jmp 4, ret

resources/dsa/lib/multiply.dsa

@@ -0,0 +1,30 @@
+// multiply.dsa
+// usage:
+//
+// include multiply "<relative path>"
+//
+// usage for multiply:
+// push (arg1)
+// push (arg0)
+// call multiply::multiply
+// pop (arg0)
+// pop (arg1)
+
+multiply:
+	push bpr
+	mov spr, bpr
+	
+	ldw bpr, rg0, 8  // load op 1
+	ldw bpr, rg1, 12 // load op 2
+
+start:	
+	add acc, rg0, acc
+	dec rg1
+	
+	cmp rg1, zero
+	jgt start
+
+end:
+	mov bpr, spr
+	pop bpr
+	return

resources/dsa/lib/print.dsa

@@ -0,0 +1,67 @@
+// lib:
+// print.dsa
+
+// usage:
+//
+// include print "<relative path>""
+//      
+// usage for print:
+//      push (register containing address of string)
+//      push pcx
+//      jmp print::print
+//
+// usage for reset:
+//      push pcx
+//      jmp print::reset
+
+dw display: 0x20000
+dw current: 0x20000
+
+// prints the given text to the screen.
+print:
+    push bpr
+    mov spr, bpr
+
+    ldw bpr, rg0, 8
+    ldw current, rg1
+
+print_loop:
+	ldb rg0, acc
+	stb acc, rg1
+
+	addi rg0, 1
+	addi rg1, 1
+
+    cmp acc, zero
+	jne print_loop
+    jmp end
+
+// return
+end:
+    stw rg1, current
+	
+    mov bpr, spr
+    pop bpr
+    return
+
+// resets the cursor position on the screen
+reset:
+    push bpr
+    mov spr, bpr
+    ldw display, rg1
+    jmp end
+
+clear:
+    push bpr
+    mov spr, bpr
+    // display size = 2000 bytes / 500 words
+    lli 500 rg0
+    ldw display, rg1
+
+clear_loop:
+    dec rg0
+    stw zero, rg1
+    addi rg1, 4
+    cmp rg0, zero
+    jgt clear_loop
+    jmp end