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/bf.dsa

@@ -3,7 +3,7 @@
 
 include print "./print.dsa"
 
-// "print hello world"
+// "prints first 16 fibonacci numbers"
 db program: "++++++++++++++++++++++++++++++++++++++++++++
 >++++++++++++++++++++++++++++++++
 >++++++++++++++++
@@ -35,6 +35,7 @@ db program: "++++++++++++++++++++++++++++++++++++++++++++
 <<++..."
 
 db error: "Invalid Instruction!"
+dh counter: 0xFF
 dw stack: 0x10000
 dw input: 0x30000
 resb data: 1024
@@ -44,11 +45,15 @@ _init_stack:
     ldw stack, bpr
     mov bpr, spr
 
+init:
+    ldw counter, rg7
+
 start:
+    call bf_reset
+
     // load the start of the program into rg0
     lwi program, rg0
     lwi data, rg1
-
     // rg0 is our instruction pointer
     // rg1 is our data pointer
     // rg2 is the value at the data pointer
@@ -98,7 +103,16 @@ loop_start:
     pop rg1
     pop rg0
 
+db success: "Success!"
 end:
+    call print::newline
+    lwi success, rg0
+    push rg0
+    call print::print
+    pop zero
+
+    subi rg7, 1
+    jnz rg7, start
     hlt
 
 loop_end:
@@ -225,3 +239,34 @@ close_left:
     // push zero to the stack
     push zero
     jmp _traverse_left
+
+
+// ------------------------------------------
+// reset interpreter
+// clears screen, resets cursor and clears data buffer.
+bf_reset: func
+    push rg0
+    push rg1
+
+    // clear screen and reset cursor
+    call print::clear
+    call print::reset
+
+    // clear data buffer (resb data: 1024 = 256 words)
+    lli 256, rg0
+    lwi data, rg1
+_bf_reset_clear_data:
+    subi rg0, 1, rg0
+    stw zero, rg1
+    addi rg1, 4, rg1
+    igt rg0, zero, rg4
+    jnz rg4, _bf_reset_clear_data
+
+    pop rg1
+    pop rg0
+
+    // reload interpreter state
+    lwi program, rg0
+    lwi data, rg1
+    lli 0, rg2
+    return