new ui, control panel kinda works, display works, framebuffer works, serial write works. widget for registers works. next is serial input and the editor

dsa_resources/print.dsa

@@ -185,8 +185,8 @@ print_whitespace: func
     addi rg1, 1
     jmp _end
 
-// // ------------------------------------------
-// // print newline
+// ------------------------------------------
+// print newline
 // print_newline:
 //     push bpr
 //     mov spr, bpr
@@ -214,6 +214,29 @@ print_whitespace: func
 
 //     jmp _end
 
+newline:
+    push bpr
+    mov spr, bpr
+
+    ldw display, rg0
+    ldw current, rg1
+
+    sub rg1, rg0, rg2   // offset from base
+    lli 80, rg3
+
+_newline_mod:
+    ilt rg2, rg3, rg4
+    jnz rg4, _newline_done
+    sub rg2, rg3, rg2
+    jmp _newline_mod
+
+_newline_done:
+    // rg2 = offset % 80 (position within current line)
+    sub rg1, rg2, rg1   // go back to line start
+    addi rg1, 80, rg1   // advance to next line
+
+    jmp _end
+
 // ------------------------------------------
 // prints arg[0] as a decimal number to the screen.
 // print_num: