SMSM SEGA Master System MIDI Interface Github

I've put some old files of my SMSM Sega Master System MIDI Interface on Github. 

https://github.com/little-scale/smsm

SN76489 USB

I wanted to make a slightly more modern implementation of my SN76489 USB. The main changes are: Teensy LC, 3.2, 3.6 compatibility, and no need for an external crystal oscillator as the Teensy generates a 3MHz signal for the timing of the SN76489.

The hardware connection is as follows:

• Pin 0 to SN76489 write enable 
• Pin 3 to SN76489 clock input
• Pin 4 - 11 to SN76489 D0 to D7
• Teensy 5V to SN76489 5V
• Teensy ground to SN76489 ground and output enable

Download the code from here: https://github.com/little-scale/arduino-sketches/blob/master/sn76489_USB.ino

little-scale: Asymmetrical Collapse (2020)

Square Sounds Melbourne 2020 Set and Ableton Live Project

Download the Ableton Live project data here.

Oct SN76489 MIDI Array

The SN76489 is the same sound chip as found in the SEGA Master System. This is an array of eight SN76489 sound chips playable via USB MIDI, for a total of 32 hardware channels.

MIDI channels 1 - 16 are each split, so that each channel can represent two hardware channels. This is achieved by splitting the MIDI pitch range across two SN76489 channels. A C3 played on MIDI channel 1 with a transposition of -36 semitones will sound like a C3 being played on SN76489 chip 1, channel 1. A C3 played on MIDI channel 1 with a transposition of +24 semitones will sound like a C3 being played on SN76489 chip 1, channel 2. 

Thus, the 16 MIDI channels are mapped as follows: 

SN76489 Chip 1, Channel 1: MIDI Channel 1 -36 semitones

SN76489 Chip 1, Channel 2: MIDI Channel 1 +24 semitones

SN76489 Chip 1, Channel 3: MIDI Channel 2 -36 semitones

SN76489 Chip 1, Channel 4: MIDI Channel 2 +24 semitones

SN76489 Chip 2, Channel 1: MIDI Channel 3 -36 semitones

SN76489 Chip 2, Channel 2: MIDI Channel 3 +24 semitones

SN76489 Chip 2, Channel 3: MIDI Channel 4 -36 semitones

SN76489 Chip 2, Channel 4: MIDI Channel 4 +24 semitones

SN76489 Chip 3, Channel 1: MIDI Channel 5 -36 semitones

SN76489 Chip 3, Channel 2: MIDI Channel 5 +24 semitones

SN76489 Chip 3, Channel 3: MIDI Channel 6 -36 semitones

SN76489 Chip 3, Channel 4: MIDI Channel 6 +24 semitones

SN76489 Chip 4, Channel 1: MIDI Channel 7 -36 semitones

SN76489 Chip 4, Channel 2: MIDI Channel 7 +24 semitones

SN76489 Chip 4, Channel 3: MIDI Channel 8 -36 semitones

SN76489 Chip 4, Channel 4: MIDI Channel 8 +24 semitones

SN76489 Chip 5, Channel 1: MIDI Channel 9 -36 semitones

SN76489 Chip 5, Channel 2: MIDI Channel 9 +24 semitones

SN76489 Chip 5, Channel 3: MIDI Channel 10 -36 semitones

SN76489 Chip 5, Channel 4: MIDI Channel 10 +24 semitones

SN76489 Chip 6, Channel 1: MIDI Channel 11 -36 semitones

SN76489 Chip 6, Channel 2: MIDI Channel 11 +24 semitones

SN76489 Chip 6, Channel 3: MIDI Channel 12 -36 semitones

SN76489 Chip 6, Channel 4: MIDI Channel 12 +24 semitones

SN76489 Chip 7, Channel 1: MIDI Channel 13 -36 semitones

SN76489 Chip 7, Channel 2: MIDI Channel 13 +24 semitones

SN76489 Chip 7, Channel 3: MIDI Channel 14 -36 semitones

SN76489 Chip 7, Channel 4: MIDI Channel 14 +24 semitones

SN76489 Chip 8, Channel 1: MIDI Channel 15 -36 semitones

SN76489 Chip 8, Channel 2: MIDI Channel 15 +24 semitones

SN76489 Chip 8, Channel 3: MIDI Channel 16 -36 semitones

SN76489 Chip 8, Channel 4: MIDI Channel 16 +24 semitones

The hardware setup has one Teensy LC, with a common data bus (digital pins 0 - 7) and individual chip select (digital pins 8 - 15). One external 4 MHz crystal provides the timing for all eight SN76489.

Download the code here: http://milkcrate.com.au/_other/downloads/arduino/oct_sn76489.ino

Third Laser - Classic #Chiptune Out Now on Sharkpeople Records!

Grab it here: http://sharkpeoplerecords.com/album/third-laser

Photos from Sound Bytes - June 2017

Pictures from the FutureSounds Side Quest Show

Homemade Drum Machine and Nanoloop 2 Jam

Nanoloop Classic "Third Laser" Now Out On THRASH44 Records!

https://thrash44records.bandcamp.com/

MIDINes Max for Live Devices

Download here: http://milkcrate.com.au/_other/downloads/M4L/MIDINes_M4L.zip

'jus chillin' with little-scale - December 19, 2015: Nanoloop Noodling [Twitch Stream Archive]

'jus chillin' with little-scale - December 02, 2015: Nanoloop Noodling [Twitch Stream Archive]

'jus chillin' with little-scale - December 01, 2015: Nanoloop Noodling [Twitch Stream Archive]

'jus chillin' with little-scale - November 30, 2015: Nanoloop Noodling [Twitch Stream Archive]

Max for Live: Triple Biquad Waveshaping

Download here: http://milkcrate.com.au/_other/downloads/M4L/little-scale.Wave.Shaping.Triple.Biquad.amxd

An Max for Live audio effect device, consisting of a three band biquad filter followed by three separate waveshapers.

Now on BandCamp: little-scale and Poppi Doser: Antia (2010)

Now on BandCamp: little-scale: Dynasty (2009)

Now on BandCamp: little-scale: NKYW (2011)

New Setup - Dual Nanoloop on Game Cube Game Boy Player

~Dreams are coming true ~ Dual #nintendo #gamecube #gba #gameboy #nanoloop - my new setup is almost complete.

A photo posted by Sebastian Tomczak (@littlescale) on Aug 31, 2015 at 2:07am PDT