Amiga.org
Amiga computer related discussion => Amiga Desktop Audio and Video => Topic started by: trilobyte on August 11, 2019, 06:13:43 PM
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Hi,
So I'd like to use MIDI on my A1000, but of course the port is a different gender from all other models. It seems like using a gender changer and then using, say, an ECE MIDI interface doesn't do the trick, probably because the A1000's serial port also has a slightly different pinout from all other models...? But I could be totally wrong here, just speaking from the experience of my own failed experiments.
So, to use MIDI with the A1000, do I have to use an interface specifically designed for the A1000? and/or hack an interface, and/or build an interface (which I haven't got the skills to do)...? Or should it actually be possible to use an interface from the later models, but through a gender changer (which I can't seem to get to work)? My serial port /seems/ to work fine, as ATerm allows me to communicate with other computers.
Thanks
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I remember building a specially pinned out parallel/printer cable, but I seem to remember that the serial port was standard pinout. Maybe you could find schematics for the midi interface that was made to fit the 1000 by Commodore? (or am I mis-remembering a genlock/video interface?)
Paul
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Well, there was a special version of A.M.A.S. for the A1000. Getting hold of it might be a bit difficult.
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Or should it actually be possible to use an interface from the later models, but through a gender changer (which I can't seem to get to work)?
The problem is missing +12 V power on pin 9. Most of MIDI interfaces are powered by this pin. Some older designs also use –12 V on pin 10. Amiga 1000 has +12 V on pin 23 and does not provide –12 V.
I could do modified version of my KA12 (https://rastport.com/products/KA12/) interface (modified PCB, male plug), but have no A1000 around to test... Alternatively it may be hacked by connecting pin 23 to pin 9 inside and using gender changer (KA12 does not need –12 V).