Editing Use the Sam2695 Dream MIDI chip (section)

== Sam2695 Dream IC is in the F256K2 and F256Jr2 only ==

The MIDI specification from MIDI.org can be found in the organization's website https://midi.org/specs<br>

There are many tutorials and overview of useful MIDI commands, here is one of them: https://www.cs.cmu.edu/~music/cmsip/readings/MIDI%20tutorial%20for%20programmers.html<br>

Here's a reference list of General MIDI instruments by number: https://www.ccarh.org/courses/253/handout/gminstruments/<br>
{| class="wikitable"
|+
!Register Name
!Address
!Description
|-
|MIDI_STATUS
|0xDDA0 
|Read: Bit[1] = Rx_empty, Bit[2] = Tx_empty
|-
|MIDI_FIFO_DATA_PORT 
|0xDDA1 
|read and write Data Port 
|-
|MIDI_RXD_COUNT_LOW  
|0xDDA2 
|Rx FIFO Data Count LOW
|-
|MIDI_RXD_COUNT_HI   
|0xDDA3 
|Rx FIFO Data Count Hi - Only the 4 first bit are valid 
|-
|MIDI_TXD_COUNT_LOW  
|0xDDA4 
|Tx FIFO Data Count LOW
|-
|MIDI_TXD_COUNT_HI   
|0xDDA5 
|Tx FIFO Data Count Hi - Only the 4 first bit are valid
|}

=== Steps in order to use MIDI OUT ===

'''MIDI OUT picks data from your program and sends it out to the SAM2695 chip as well as the MIDI Out port to an external device.'''

Send a MIDI command through 0xDDA1 in rapid sequence.
<br>

Moderately heavy middle C to channel 0: 0x90, 0x40, 0x40<br>
Changing the instrument of channel 0 to a Slap Bass 1: 0xC0, 0x24<br>