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Out of the Pack

Metronome - Software Timer Demo in DE RE Atari

Posted by Pack007, 18 March 2018 · 85 views
metronome, software timer
I was thinking about making an 8-step sequencer for a Gakken SX-150 Mark II analog synthesizer using the Atari8.  Then I thought, "Why not just use the Pokey chip instead of the Gakken? "  Then I thought, "Why not develop it using Diamond GOS? I'll bet no one has done that yet." 
While reading up on the hardware and software timers,...

Kaleid-a-vision: A Music Visualizer Technique for Retro Computers

Posted by Pack007, 18 February 2018 · 123 views
kaleidoscope, Kaleid-a-vision
I can't say I did this on my Atari8, but I can truthfully say I did it with my Atari8.

This video was recorded using the Kaleid-a-vision hardware, Atari8 and video camera.  I would suppose any retro computer or video game machine could be used as a video source. 
The Atari was running a GR9 Demo...

DH100 - A POKEY House of the Rising Sun

Posted by Pack007, 10 February 2018 · 130 views
DH100, Arduino, MIDI

I finally put together a semi-live performance using the DH-100 Digital Horn to control the sound of an Atari XE computer.  I know that improvements to the hardware/software is not going to improve my ability to play the horn but there is much that can be done to improve the sound.
There were some cha...

Nunchuk Your Way To a Better Pac-man Score

Posted by Pack007, 29 January 2018 · 127 views
nunchuk, Arduino, pac-man
Nunchuk Your Way To a Better Pac-man Score While playing Pac-man with a standard Atari Joystick, how often have you missed a turn? I may have a solution, if its due to pushing the joystick to far off the four directional axis. If its due to a slow reaction time then you're still on your own.
I noted while playing Pac-man that my granddaughter would rotate the joystick base and start pu...

DH-100 - The Sound of Possible Music

Posted by Pack007, 16 January 2018 · 148 views
Finally got the DH-100 digital horn telling the Atari8 what tones to make and when.  There was a couple of times I didn't think it was going to happen.  Luckily the compiled basic program runs fast enough to keep up with the filtered data from the Arduino.  Some sound tests have been recorded and placed in the following ZIP file. ...

DH100 - Interface program / A8 - Frequency tables

Posted by Pack007, 06 January 2018 · 132 views
DH100, DH-100, MIDI, digital horn
I finished work on the last blog entry, unplugged the keyboard and plugged the digital horn.  I was a little surprised to see how much data the breath pressure sensor(after touch) was being streamed to the Atari 8.  Far more then it could keep up with.
The Arduino needed to be reprogramed to reduce the number of bytes being send to the At...

DH100 - MIDI Communication established

Posted by Pack007, 23 December 2017 · 195 views
DH100, DH-100, MIDI, arduino
DH100 - MIDI Communication established I was going to start writing my list of resolutions for 2018. Then I thought about writing about what I didn't accomplish in 2017.  Then I decided to just work on programing the interface and get the Atari to read and print the MIDI data stream through the joystick port.  I had high hopes of creating a midi monitor that would accept the data and...

When is a 410 not a 410?

Posted by Pack007, 26 October 2017 · 342 views
410, Cassette, recorder
When is a 410 not a 410? When it’s a camouflaged storage box.

It took me years of careful deliberation before I could gut one of my 410 Data Cassette Recorders.  I finally came to the conclusion that I wasn't going to replace the belts just so I could play "Sammy the Sea Serpent"....

Controlling the Cassette Motor Control Bit on the A8

Posted by Pack007, 21 September 2017 · 265 views
Cassette, Motor Control
The Cassette Motor Control(CMC) bit in the Port A Controller (PACTL ($D302)) address is going to be used as feed back from the Atari8 to the Arduino in the digital horn project.  This bit controls the logic state of Pin 8 on the SIO port. This bit has been used to control the data cassette motor.  If you're not using the bit to load data from th...

DH100-->A8 MIDI Interface

Posted by Pack007, 11 September 2017 · 293 views
dh100, midi
DH100-->A8 MIDI Interface I have 9 optocouplers setup to receive data from the Arduino for the SAM Rock You project.  Eight for the MIDI data byte from the Arduino and 1 to signal the Trigger when new data is ready to be read by the Atari8.  A tenth optocoupler needs to  be added so that the A8 can let the Arduino know that it is ready for the next byte.

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