lemonhorse Posted July 21, 2008 Author Report Share Posted July 21, 2008 tx :) Quote Link to comment Share on other sites More sharing options...
Theta_Frost Posted July 21, 2008 Report Share Posted July 21, 2008 Woot great job man! :D Quote Link to comment Share on other sites More sharing options...
buhler Posted July 21, 2008 Report Share Posted July 21, 2008 @#&*(@ :o Quote Link to comment Share on other sites More sharing options...
Theta_Frost Posted July 21, 2008 Report Share Posted July 21, 2008 Correct me if I'm wrong it just affects volume of the channels? :o Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted July 22, 2008 Author Report Share Posted July 22, 2008 Correct me if I'm wrong it just affects volume of the channels? yes. the ay 3 8912 chip provide three amplitude regs (R10,11,12 - volume/amplitude register a b c: 0-15 dec. [=>4bits: L0 L1 L2 L3]) for the channel a/b/c.this is the internal volume handling of the AY 3 8912 chip.the MIDIBox AY 3 8912 will be equipped with a (user)menu for volume (tone a b c) [volume pre-adjustment 0-15 dec.]. furthermore it's planned that the volume of tone a/b/c will be controllable via control change and velocity (switchable). the mixer module was just designed for mixing the tone a/b/c and for fine justification of the volume level. Quote Link to comment Share on other sites More sharing options...
Theta_Frost Posted July 22, 2008 Report Share Posted July 22, 2008 Wow thanks man! This is one of the best designed user projects on here! Very clean and new! ;D Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted July 23, 2008 Author Report Share Posted July 23, 2008 Thank you all for the feedback! :)@Sirkit: In my view I'm a raw beginner (my method is trial and error) ;D Quote Link to comment Share on other sites More sharing options...
Theta_Frost Posted July 23, 2008 Report Share Posted July 23, 2008 Still its way nice ;) oh and how can you control sound parameters with just a keyboard, wouldn't you need at least 1 encoder, (like the SIDS step A control surface) Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted July 23, 2008 Author Report Share Posted July 23, 2008 how can you control sound parameters with just a keyboard, wouldn't you need at least 1 encoder The Menu/Parameter handling is unfinished at the current stage of the Project - but I would like to leave all interaction to the C64 keyboard. Nevertheless I hope the user work flow will be some kind of handy in the end (...it's because - my first Computer was a Commodore64 - and first love never dies ;) ) Quote Link to comment Share on other sites More sharing options...
Theta_Frost Posted July 23, 2008 Report Share Posted July 23, 2008 I get it but still i dont see how you couldn't change and LFO for instance with just buttons because you couldn't change it at just the speed you wanted but get close.. oh well :D Quote Link to comment Share on other sites More sharing options...
buhler Posted July 24, 2008 Report Share Posted July 24, 2008 I get it but still i dont see how you couldn't change and LFO for instance with just buttons because you couldn't change it at just the speed you wanted but get close.. oh well :Dbuttons, believe it or not, are actually more accurate, encoders are more intuitive maybe... it's a preference thing not a necessity thing. you are referring to the interval between values that can be achieved and that would be the same with either encoder or buttons. it's up to the hardware and the guy programming it. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted August 2, 2008 Author Report Share Posted August 2, 2008 I just got an issue with the sm 8x8 keyboard driver - some keys working fine - but there are some other keys with strange behavior (as F1, F3, F5, arrow up, Q, E, T, U, CTRL... ). They do not only toggle once (on/off) - those keys toggle several times (never-ending - actually with diffident values like key F3). I took another keyboard - same results. I furthermore made a cross check with http://www.ucapps.de/mios/sm_example2_v1b.zip Quote Link to comment Share on other sites More sharing options...
stryd_one Posted August 3, 2008 Report Share Posted August 3, 2008 It sounds almost like a debounce problem but I notice that the keys you mention are only within a certain section of the keyboard, and are on the same columns in the matrix. I'd be looking for shorts and loose connections, and diodes in backwards. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted August 3, 2008 Author Report Share Posted August 3, 2008 ..I'd be looking for shorts and loose connections, and diodes in backwards.Yes - perhaps it's the hardware. I'll check the MIDIBoxKB interface. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted August 3, 2008 Author Report Share Posted August 3, 2008 Mea culpa! :-\I thought it was the SM driver but there was a loose connection (sometimes working sometimes not) in the MIDIBoxKB interface @74HC165Thank You for pointing me in the right direction stryd! :) Quote Link to comment Share on other sites More sharing options...
stryd_one Posted August 3, 2008 Report Share Posted August 3, 2008 Sweet! Quote Link to comment Share on other sites More sharing options...
jimh54 Posted August 4, 2008 Report Share Posted August 4, 2008 anyone know a source where i can get 1 of these chips? Everywhere i see has a minimum order. Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted August 6, 2008 Author Report Share Posted August 6, 2008 anyone know a source where i can get 1 of these chips? Everywhere i see has a minimum order.I took my AY 3 8912 chip from an old and broken arcade board - but such boards are hard to find.AY-3-8912 / ay38912 ($6.50)http://www.arcadechips.com/product_info.php?cPath=27_22&products_id=111AY-3-8912 - IC AY-3-8912 Sound Generator (€9.00 (Excl. VAT))http://www.parts4pinballs.com/index.php?currency=EUR&manufacturers_id=9&sort=3a&filter_id=14[deleted]Hard-to-find Integrated Circuits (USA)http://mysite.verizon.net/res8aiig/ICparts/ICparts.htm#AY38912Bassenberg (Kiel, Germany)http://www.bassenberg.de/request.php/products_id/2666/AY-3-8912.htmlElektronische Bauteile (german)http://www.flipperwerk.de/ElektronikThe only shop I personally know is Bassenberg. If You wand me to ask Jörg Bassenberg for a AY 3 8912 I will do :) Quote Link to comment Share on other sites More sharing options...
mrcam Posted August 6, 2008 Report Share Posted August 6, 2008 http://www.plccenter.com/buy/GENERAL+INSTRUMENT/ICAY389120.25$ each !?... shipping cost is about 50$ for the usa but twice more for anywhere in europe Quote Link to comment Share on other sites More sharing options...
lemonhorse Posted August 6, 2008 Author Report Share Posted August 6, 2008 deleted that one. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted August 6, 2008 Report Share Posted August 6, 2008 0.25$ each !?... shipping cost is about 50$ for the usa but twice more for anywhere in europePerfect for a group buy. Quote Link to comment Share on other sites More sharing options...
frailn Posted August 6, 2008 Report Share Posted August 6, 2008 Perfect for a group buy.Since I'm collecting different chips for projects, and I'm interested in this one, I might be willing to run the group buy if I can get some advice from Wilba or SmashTV on international shipping of IC's - how to keep the cost down, etc... I live in the USA, so if I purchased 100 of these IC's, shipping would be $77 USD to my address. Total cost for 100 chips would be $102.95. That comes out to $1.03 per chip. Then add on shipping charges to wherever purchasers live (that is where I would need assistance). Wilba since you have shipped SID's all over the world, your assistance would be greatly appreciated. Smash - since you live in the US and ship internationally and domestically, you might have some good advice, as well. I would use the PayPal option, like other group buys. Most likely run it just like Wilba did the SID Mega-Sales.However, the only caveat would be testing the chips when they got here. Any ideas on how to test these once I received them?They only have one chip available. Someone please downgrade my forum status from "Midibox addict" to Midibox Retard, please. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted August 6, 2008 Report Share Posted August 6, 2008 Heheheh thanks for checking it out man! Quote Link to comment Share on other sites More sharing options...
mrcam Posted August 6, 2008 Report Share Posted August 6, 2008 Found a seller in uk... he has 150 x AY-3-8912 in stock and currently selling it 4 GBP each. Is anybody interested for a bulk order? ... I still have to deal with him!I am from France... if some uk guy wants the deal, it could be easier. Quote Link to comment Share on other sites More sharing options...
frailn Posted August 6, 2008 Report Share Posted August 6, 2008 I'm checking on a couple of suppliers in the US. Considering the strength of the dollar these days, this could be a bargain for Euro and British midiboxers. Let you know what I find out. Quote Link to comment Share on other sites More sharing options...
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