lemonhorse Posted February 28, 2011 Author Report Share Posted February 28, 2011 Hello Analog Monster! > do I have to break up a c64 to get the keyboard or can I get away with using midi only? Here is a List of MIDIBox AY CC Parameter: http://www.midibox.org/dokuwiki/doku.php?id=midibox_ay_3_8912_cc_list Without C64 Keyboard: - No Fx Option (http://www.midibox.org/dokuwiki/doku.php?id=midibox_ay_3_8912_fx) - You can not save patches - No LCD Menu Navigation > is there an alternative controller such as building a matrix keypad interface? No. But buttons are on my TODO LIST now (Perhaps It will come with a PIC18F4620 Update) - Lemonhorse Quote Link to comment Share on other sites More sharing options...
analog monster Posted March 8, 2011 Report Share Posted March 8, 2011 thanks for the answer. I think I will build it into a temporary case while its midi only and move onto some other midibox projects, then I will work out if I want to break up a c64 or not when I've finished what is on my list - my intention is to build a rack mounted synth bank based on my favourite old computer chips (SID, OP-FM, AY), but you know how projects can change as time goes on. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted March 8, 2011 Author Report Share Posted March 8, 2011 Im in the initial stage of a PIC 18F4620 based MIDIBox AY. First I got to review/clean up my old asm Code (will take some time) - after that I will try to implement Navigation Buttons... So no hurry ;-) Quote Link to comment Share on other sites More sharing options...
ALEXDAMAN Posted March 8, 2011 Report Share Posted March 8, 2011 This thing is awesome! I wonder how long till we get an AYSammich ;) Quote Link to comment Share on other sites More sharing options...
Antix Posted March 15, 2011 Report Share Posted March 15, 2011 Hi, actually noticed that YM2164 is very easy to find.... is it the time for a new MIDIbox for the masses :D ? Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted March 20, 2011 Author Report Share Posted March 20, 2011 MIDIBox AY V2 forecast: Got a problem with PIC 18F4620 (glitch noise at increased MIDI traffic). There is no such problem with the same Software @ PIC18F452 (but i can not use the 18F452 for further development - not enough Program Memory) Next step: I will buy a PIC18F4685 for a cross-check. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted April 11, 2011 Author Report Share Posted April 11, 2011 (edited) MIDIBox AY (YM) V2 - Forecast II (still planning phase) * I will remove the C64 keyboard and try to design a new CS with Buttons (just ordered Buttons ;-) * I think the MB AY (YM) V2 will be stuffed with the 18F4685 (a lot of programming space to play around) Edited April 19, 2011 by lemonhorse Quote Link to comment Share on other sites More sharing options...
rosch Posted April 11, 2011 Report Share Posted April 11, 2011 oh man i still haven't built this. it's getting embarassing now...... great news and interesting progress! i know some day i'll play with it. at least i can flash my pics now Quote Link to comment Share on other sites More sharing options...
nebula Posted April 18, 2011 Report Share Posted April 18, 2011 A little reminder that if you plan on making a protoboard yourself, a AY-3-8910 works fine, and ... so does a YM2149F - if you can find one :) What do I do with all the extra pins on the 8910? Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted April 19, 2011 Author Report Share Posted April 19, 2011 Hello Nebula, What do I do with all the extra pins on the 8910? The AY-3-8910 has two general purpose 8-bit I/O ports and is supplied in a 40 lead the AY-3-8912 has one port and 28 leads. All IOA and IOB (I/O ports) = N.C. All Test pins = N.C. /A9 = 0V (ground) Quote Link to comment Share on other sites More sharing options...
nebula Posted April 19, 2011 Report Share Posted April 19, 2011 Thanks Lemonhorse - that's exactly what I needed to know! I wasn't sure if I should ground the unused IO pins or not. I'm actually modifying the layout a bit for the 8910. Might take me a while as I have some other projects on the go ... but I will share my layout when done. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted April 19, 2011 Author Report Share Posted April 19, 2011 ... I will share my layout when done. Great news - You have my full support for the 8910 board! :-) Quote Link to comment Share on other sites More sharing options...
nebula Posted April 19, 2011 Report Share Posted April 19, 2011 Here's another question ... would it be a good idea to have the AY chip on the same board as the mixer? I can't think of any reason not to. BTW BG Micro offers new AY 3 8910 IC's for $4.07 USD. They are out of stock at the moment, but apparently they are getting more. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted April 20, 2011 Author Report Share Posted April 20, 2011 Hello Nebula, ... would it be a good idea to have the AY chip on the same board as the mixer? I have no objections. It's just because the modular concept is a little more flexible in some way. I mean you can (re)use one and the same mixer module with a adequate Soundchip PCB (AY-3-8910, AY-3-8912, YM2149). Quote Link to comment Share on other sites More sharing options...
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