wrote print.dsa

resources/dsa/print.dsa

@@ -1,25 +1,45 @@
-// PRINT LIBRARY.
+// lib:
-// don't run this as a program as it won't do anything useful.
+// 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
 
-start:
+reset:
+    pop ret
+    ldw display, rg1
+    stw rg1, current
+    jmp 4, ret
+
+print:
     pop ret // return address
-    pop rg0 // length
+    pop rg0 // string
-    pop rg1 // string
+    ldw current, rg1
-    ldw display, rg2
 
 loop:
-	ldw rg1, acc
+	ldb rg0, acc
-	stw acc, rg2
+	stb acc, rg1
 
-    dec rg0
+	iadd rg0, 1
+	iadd rg1, 1
 
-	iadd rg1, 4
+    cmp acc, zero
-	iadd rg2, 4
+	jne loop
-
-    cmp rg0, zero
-	jge loop
 
+    // return
 end:
-	jmp ret
+    // set current to 
+    stw rg1, current
+	jmp 4, ret

resources/dsa/test.dsa

@@ -1,36 +1,18 @@
-dw string: "this is some random string idk"
+include print "../resources/dsa/print.dsa"
-dw len: 8
+
+init:
+	dw stack: 0x10000
+	ldw stack, bpr
+	mov bpr, spr
 
 start:
-	// we use lwi in this case because
+	db string: "Damn this works pretty well"
-	// in a generic case 'string' could be a 32 bit addr
 	lwi string, rg1
-	push rg1
-	lwi len, rg1
-	push rg1
-	push pcx
-	jmp start
-	hlt
 
-dw display: 0x20000
+	// push variables	
+	push rg1 // string address.
+	push pcx // return address.
 
-print:
+	// call
-    pop ret // return address
+	jmp print::print
-    pop rg0 // length
+	hlt
-    pop rg1 // string
-    ldw display, rg2
-
-loop:
-	ldw rg1, acc
-	stw acc, rg2
-
-    dec rg0
-
-	iadd rg1, 4
-	iadd rg2, 4
-
-    cmp rg0, zero
-	jge loop
-
-end:
-	jmp 4, ret