Pocket Computer

• Works with most SD cards, size is not limited (but MrMidi can only use the first 32MBytes of it)

• Real MIDI files (Format 0 only) - recording and playback

• Maximum of 255 files, they must be in the root directory of the card

• Displays the file names - long names are supported

• File delete is possible (it can delete any file from the root directory)

• 256 byte input/output buffer and 8MHz clock for high performance and precise MIDI timings

• Lyrics are displayed (when contained in MIDI file) - cool!

• Variable speed (+/-15 steps) and transpose (+/-24) while playing a file

• SD card bootloader - just format a SD card, copy MM.BIN onto it, insert it and switch ON!

• MIDI channel mute for each channel

• Menu for setting up drum channel, lyric display, repeat modes and channel mute

• Settings are stored in non-volatile EEPROM on-chip

• IR remote control (RC5 protocol), a Philips videorecorder remote for example. Or get a programmable remote and use code 257.

This project, which includes schematics and bootloader code may give sufficient information as to how to build a basic midi recorder