MIDIbox

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====== MidiBoxKB ======

Since Thorsten released a 8*8 scan matrix driver,

it's easily possible to use a C64 Keyboard with MIOS.

{{http://jambonbill.free.fr/midibox-kb/Keyboard_Standard.gif}}

http://www.midibox.org/forum/index.php?topic=6505.msg40727#msg40727

The C example can be downloaded here :
  - http://ucapps.de/mios/sm_example2_v1.zip
  - http://ucapps.de/mios/sm_example1_v2.zip


First, i did this pcb (on a breadboard) :

{{http://jambonbill.free.fr/midibox-kb/sm_shematics2.gif}}


===== The program =====

Use that sample program to test your keyboard connection : 
  * http://jambonbill.free.fr/midibox-kb/c/c64-keyboard-test-v2.zip (sources are included)

This small app display the key number, the corresponding Character, the midi note number associated to that key,
and play a note on channel 1.
The keyboard mapping can be found in the "variables.h" file.
More than a test, it's a good base for your own programs.

A bigger and more interesting program (a funky sequencer) is still on developpement... stay tuned !


===== It can look like this =====
[[http://www.youtube.com/watch?v=OZGhumzoR70]]

{{http://jambonbill.free.fr/midibox-kb/c64-board.jpg}}

Please write me if you have questions. 

Get various files and details related at http://jambonbill.free.fr or http://jambonbill.free.fr/?rep=./midibox-kb

 --- //[[bill@mylgd.com|bill]] 2006/05/02 05:06//


===== More photos =====
{{http://jambonbill.free.fr/midibox-kb/photos/mbkb-01.jpg}}
{{http://jambonbill.free.fr/midibox-kb/photos/mbkb-02.jpg}}




===== Bugs =====
Atm, some key combination lead to errors :
The C64 keyboard pcb do not have signal leds.
So, when you try to play some chords (no worry, only a few of them) the scan matrix do not read the keyboard correctly.
I guess that problem exist on the real C64, but is not a problem because there's no need to press 4 keys at the same time, in a normal way of use.
Most or all 3 notes chords can be played with no problem.
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