Couple of small fixes

build.sh

@@ -1,2 +1,3 @@
 #!/bin/bash
 mkdir -p .build && zasm -i src/fib.z80 -o .build/fib.bin
+ls -al .build/fib.bin

src/fib.z80

@@ -1,8 +1,8 @@
-_ram_start equ 0x1600
+_ram_start equ 0x1300
 
 #target rom
 
-#code _HOME, 0x1500          ; Non-banked part of memory
+#code _HOME, 0x1200          ; Non-banked part of memory
 
 #data _DATA, _ram_start ; Uninitialized variables
 
@@ -22,6 +22,8 @@ init:
 loop:
 	add a, b
 
+	ld (hl), a
+	inc hl
 	out 0x80, a
 
 	ld c, a

upload.py

@@ -1,6 +1,8 @@
+#!/usr/bin/env python3
 import serial
 import os
 import sys
+import time
 
 def progressbar(it, prefix="", size=60, file=sys.stdout):
     count = len(it)
@@ -17,24 +19,21 @@ def progressbar(it, prefix="", size=60, file=sys.stdout):
 
 def main():
     if len(sys.argv) == 2:
-        ser = serial.Serial("COM3", timeout=1, write_timeout=1)
+        # ser = serial.Serial("COM3", timeout=1, write_timeout=1)
+        ser = serial.Serial("/dev/ttyUSB0", timeout=1, write_timeout=1, baudrate=115200)
         if ser.is_open:
-            # Clear out any existing input
-            ser.write(b'\n')
-            ser.readline()
-
-            # Send the upload command
-            ser.write(b'#u\n')
-            print(ser.readline())
-
             path = sys.argv[1]
             size = os.path.getsize(path)
-            ser.write([size & 0xFF])
+
-            ser.write([(size >> 8) & 0xFF])
-            i = 0
             with open(path, "rb") as f:
                 for i in progressbar(range(size), "Upload: ", 40):
-                    ser.write(f.read(1))
+                    byte = f.read(1)
+                    ser.write(byte)
+
+                    if byte == b'#':
+                        ser.write(b'#\n')
+
+                    time.sleep(0.002)
 
             print(ser.readline())
             ser.close()