Universal Learning Remote GB

Universal Learning Remote
General
Author	Ken Kaarvik
Type	Other Apps
Version	1999
License	Mixed
System	CGB
Last Updated	1999/03/13
Links
Download
Website
Source

Universal learning remote homebrew, including Sony WebTV Keyboard decoding (GBC only).

User guide

Description of what you see on the GBC screen:

aa       m1 s1 17 17
         m2 s2 18 18
bb       m3 s2 19 19
         m4 s4 20 20
cc       m5 s5 21 21
         m6 s6 22 22
dd       m7 s7 23 23
         m8 s8 24 24
ee       m9 s9 25 25
         10 10 26 26
         11 11 27 27
         12 12 28 28
  S1 S0  13 13 29 29
         14 14 30 30
         15 15 31 31
   W0    16 16 32 32
web_bits
 0123456 P

Description of above:

• aa=Counter - inc's every write to screen.
• bb=Joypad.
• cc=Carrier off (always 1).
• dd=Carrier on 07=40kHz? 09=32kHz?
• ee=Number of marks (was duty cycle).
• m1=First mark, num of cycles per mark (header).
• s1=First space measured in software loops; s2-32, m2-32 next 31.
• S0=Decoded byte for sony (m9 m8 m7 m6 m5 m4 m3 m2).
• S1=Decoded byte for sony (17 16 15 14 13 12 11 10).
• W0=Sony web bits in hex see below.

web_bits:

• All the buttons on Sony's web tv keyboard start the same m1=56,s1=1D,m2=1E,s2=1D,m3=3C,s3=1D,m4=1E,s4=1D.
• The waveform shows the following marks and spaces in relative lengths ( one tile = 1E).

How to use

Press A (screen will go red) and wait for infrared data, all data on screen will update.

Press B (screen will go light red) to send out stored data.

Press Select (screen will go blue) to save recorded data into 1 of 4 cart ram locations.

Press d pad to write to cart ram and send saved data.

If the header is correct for sony then update S1 S0, else S1=99.

Screenshots

External links

• Author's website - http://www.geocities.com/kkaarvik/gameboy.html (archived)