From a5466dbd858232c1591e792b822e5bc1c50442b8 Mon Sep 17 00:00:00 2001
From: Andrew Kay <git@ajk.me>
Date: Tue, 26 May 2020 16:58:01 -0500
Subject: [PATCH] Improve pycoax character map example

---
 pycoax/examples/20_char_map.py | 48 +++++++++++++++++++++++++---------
 1 file changed, 35 insertions(+), 13 deletions(-)

diff --git a/pycoax/examples/20_char_map.py b/pycoax/examples/20_char_map.py
index 83bde17..cf435ca 100755
--- a/pycoax/examples/20_char_map.py
+++ b/pycoax/examples/20_char_map.py
@@ -2,40 +2,62 @@
 
 from common import create_serial, create_interface
 
-from coax import read_address_counter_hi, read_address_counter_lo, load_address_counter_hi, load_address_counter_lo, write_data
+from coax import Control, read_address_counter_hi, read_address_counter_lo, load_address_counter_hi, load_address_counter_lo, write_data, load_control_register
 
 DIGIT_MAP = [0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85]
 
 with create_serial() as serial:
     interface = create_interface(serial)
 
-    print('LOAD_ADDRESS_COUNTER_HI...')
+    load_control_register(interface, Control(cursor_inhibit=True))
 
     load_address_counter_hi(interface, 0)
-
-    print('LOAD_ADDRESS_COUNTER_LO...')
-
     load_address_counter_lo(interface, 80)
 
-    print('WRITE_DATA...')
-
-    buffer = b'\x00' * 3
+    buffer = b'\x00' * 4
 
     # Header Row
     for lo in range(16):
-        buffer += bytes([DIGIT_MAP[lo]]) + (b'\x00' * 3)
+        buffer += bytes([0x2f, DIGIT_MAP[lo]]) + (b'\x00' * 2)
 
-    buffer += b'\x00' * 13
+    buffer += b'\x00' * 12
 
     # Rows
     for hi in range(16):
-        buffer += bytes([DIGIT_MAP[hi]]) + (b'\x00' * 2)
+        buffer += bytes([DIGIT_MAP[hi], 0x2f]) + (b'\x00' * 2)
 
         for lo in range(16):
-            buffer += bytes([(hi << 4) | lo]) + b'\x32\xc0\x00'
+            if hi < 12:
+                buffer += bytes([0x00, (hi << 4) | lo, 0xc0, 0x00])
+            else:
+                buffer += bytes([(hi << 4) | lo, 0x32, 0xc0, 0x00])
 
-        buffer += b'\x00' * 13
+        buffer += b'\x00' * 12
 
     buffer += b'\x00' * 560
 
     write_data(interface, buffer)
+
+    # Status Line
+    load_address_counter_hi(interface, 7)
+    load_address_counter_lo(interface, 48)
+
+    buffer = b''
+
+    for hi in range(12, 16):
+        buffer += bytes([DIGIT_MAP[hi]]) + (b'\x00' * 15)
+
+    buffer += b'\x00' * 16
+
+    for hi in range(12, 16):
+        for lo in range(0, 16):
+            buffer += bytes([DIGIT_MAP[lo]])
+
+    write_data(interface, buffer)
+
+    load_address_counter_hi(interface, 0)
+    load_address_counter_lo(interface, 0)
+
+    buffer = bytes(range(0xc0, 0xff + 1))
+
+    write_data(interface, buffer)