nILS Posted December 10, 2007 Author Report Posted December 10, 2007 Yep, once the design is verified I'll most likely post the .brd file. This may take a bit, as I said, but it will happen :D
bugfight Posted January 13, 2008 Report Posted January 13, 2008 i hereby and heretofore wherewithal notwithstanding etc etcpredict the "newb" will be a guru before the pokey sw is working...*whack*
nILS Posted January 13, 2008 Author Report Posted January 13, 2008 i hereby [...] predict the "newb" will be a guru before the pokey sw is working......and you'll have a lot of gray hair. And like me even less than now. ;)
nILS Posted February 1, 2008 Author Report Posted February 1, 2008 Tonight, I finished soldering the first mbPokey module. While doing so I found a mistake in the schem and the PCB layout - SO wasn't connected to the POKEY. Which is bad :D I'll check the module again tomorrow and see if I manage to get it to make some noise.EDIT: I won't be posting pics, as I don't have a digicam handy and it doesn't look all that amazing :D
Smithy Posted February 1, 2008 Report Posted February 1, 2008 Would love to see some pics.EDIT: This vid might be iof nterest to you.A guy whos sending FOR statements to the pokey from a microcontroller and coming up with some interesting soundsHe explains it more in the info:http://ie.youtube.com/watch?v=aRCPOhP-V7MSome Cool sounds in between the gaps.I praticularly love from 3:20 onwardsSounds very aphex-like.Great for the circuit benders and glitch lovers out there id imagine.
Smithy Posted February 1, 2008 Report Posted February 1, 2008 Some infos too on this guys page:http://little-scale.blogspot.com/search/label/pokey
nILS Posted February 1, 2008 Author Report Posted February 1, 2008 EDIT: This vid might be iof nterest to you.Um, yes, this is what a pokey sounds like when you push random values into the registers - not quite my goal though :-/
Jaicen Posted February 1, 2008 Report Posted February 1, 2008 I concur, it's pretty easy to get randomness like that from a number of sources, much harder to make something that conforms to musical structures!Will the pokey be able to play full musical intervals, or is it limited as in the Synthcart?
nILS Posted February 1, 2008 Author Report Posted February 1, 2008 Will the pokey be able to play full musical intervals, or is it limited as in the Synthcart?Yes and no. The pokey will play about 4-6 octaves rather accurately. The tuning in some ranges of notes is a bit off due to the divide-by-N counter used for frequency generation.
nILS Posted February 2, 2008 Author Report Posted February 2, 2008 Whee! It's working! Thanks so much stryd! I'll upload a little audio/noise file soon.EDIT:It didn't work right away for 2 1/2 reasons:* I noticed the first one while soldering the board - although the schematic looks correct, there's a missing junction, which Eagle didn'T notice either -> J1:SO( 8 ) was not connected to IC:/CS0(30)* I had an error in the source code of the SR handler (which is a C port of TK's mbSid v1.7 source)* I had to manually write to the register using MIDIOx as the software doesn't do much yet - and I for some reason sent volume "0", so it wasn't really that surprising no sound would come out of the Pokey ;-)I'll upload the updated schem and board layout as well as the software later on so whoever want's to get started on building one can do so.more edit:Removed accidental smiley :D ( <- this one is intentional)
dj3nk Posted February 5, 2008 Report Posted February 5, 2008 \/\/ 3 l_ C 0 /\/\ 3;)You should rename the thread to A full-blown guru on the way to a POKEY synth :)
stryd_one Posted February 11, 2008 Report Posted February 11, 2008 heheheheI think that the name of this thread just serves as inspiration to those who fear starting a midibox project :)
nILS Posted February 11, 2008 Author Report Posted February 11, 2008 I think that the name of this thread just serves as inspiration to those who fear starting a midibox project :)Exactly - thanks for pointing it out stryd ;-)
sparx Posted February 21, 2008 Report Posted February 21, 2008 Yes, congrats!How is the eagle board file coming along? I am in serious board making mode at the moment.RegardsSparx
nILS Posted February 21, 2008 Author Report Posted February 21, 2008 I should be holding the first etched prototype in my hands shortly - if that thing works, I'll post the board file here.
LenweTasasartir Posted February 21, 2008 Report Posted February 21, 2008 Sorry for small offtopic, but if anyone have some time... I've translated wikipedia article about POKEY from Polish to English, but i'm sure, that it's full of mistakes, so can someone take a look on it?
stryd_one Posted February 22, 2008 Report Posted February 22, 2008 Welcome aboard dude! Documentation is never offtopic ;) I'll go over it with nilly later on .
buhler Posted March 2, 2008 Report Posted March 2, 2008 i am absolutely stoked about this! i just stumbled on this thread today and can't wait to build one of my own. i'm sooo excited!! i have to finish my MbSID first though but that's exciting too! ;D just as a side note, i would love to get a few PCB's if you do end up with extras for sale! i've never had my own printed so i wouldn't know what to do. :)
cyutaeha Posted March 10, 2008 Report Posted March 10, 2008 Um, yes, this is what a pokey sounds like when you push random values into the registers - not quite my goal though :-/Man I can't wait to hear it! :D
buhler Posted April 20, 2008 Report Posted April 20, 2008 hey nILS, i have a question... my oscillator(crystal) has only 2 pins. do i connect both to Pin #3 of the 74HC74 or just one? i assume one pin of the crystal goes to GND and the other to VCC? thanks. also, the last post you did with code in it, i believe on page 3 of this thread, is that the final app or at least one that will work?
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