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reve

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Everything posted by reve

  1. Super -- thank you, guys. Looks like I pulled up a couple pads getting the thing out... I'll get some wick, get it cleaned up and reassess. Thank you!
  2. Heeeeeey midiboxers! So in a "bah, I've wired up dozens of supplies I know what I'm doing" moment of arrogance it appears I reversed the GND and -V connections on my spiffy new AOUT_NG. Naturally it didn't work and... it took a couple minutes as I was going to fetch test equipment before I smelled something funny. I pulled the plug and TL's were hot, as was the DAC. Reading the 5630 datasheet I see it says a maximum of 7v... and with my +/-15v supply I reckon I sent close to 20v to the little bugger. Since the module is not working I'm assuming I cooked it. But before I weep my tears, I figured I should check with you lot to see if... I dunno. Maybe you guys know that DAC to be particularly resilient and I should look for construction problems before giving up on it? Or should I just dump it? If so, buying a new board might be easier than trying to cleanly desolder that chip? Advice? After fixing the power (and disconnecting the analog ground since it's shared with the core's ground) the right voltages are going to the chip but I see no change in what comes out of the output pins on the DAC. I'd never used the module before, so it could be a general construction issue. I have no tools to verify that the DAC is receiving data, but that seems hard to screw up after double checking the ribbon connector a few times. Core operates fine and I get gate signals, yay.
  3. reve

    Juno 6 MIDI??

    Er no, not on the voice board. On the CPU board. I broke out the Juno 60 manual this afternoon and did a bit of skimming... and as it turns out there were some DCB issues that I didn't think about. 1. Voice rotation isn't a problem. CPU'll take care of it. 2. Unlike MIDI, there's (odd) parity bits. 3. Unlike MIDI, there's a 2 bit stop bit. As far as your grafting idea goes, taking MIDI data, emulating the 6's scanning keyboard & the Roland data structure sounds more like a straight PIC project... I don't think trying to shoehorn it into a midibox project would save you much work at all.
  4. reve

    Juno 6 MIDI??

    Hey there. If it really is a Juno 60 mainboard (and it's fully populated!), it has dcb -- all you need to do is wire up a jack. I don't know how likely that is, though... If not, on the CHD ELEKTROSERVIS site referenced in other posts, they've got a circuit that you can can ostensibly wire directly into the 6's CPU to give it DCB control. I'm also a Juno 60 owner & occasional midibox builder that's thought about midifying le ol Juno. In my mind, Midi to DCB shouldn't be tough. Midibox should be able to *see* the DCB messages, since they're similar enough to midi... they're both chirping at 31250 baud, right?, so you wouldn't need any external circuitry to convert the speeds. At first it seems easy, because they both go Status byte, Data Byte, right? Then I stopped to think about voice rotation. eewwww. I *think* DCB transmits transmits all the voice voices in each key code block (anyone wanna confirm?). If that's the case, you couldn't just translate each incoming DCB note as a sysex block and translate it on the fly if you wanted any degree of polyphony. That makes the project much, much harder for a beginner like me. Enough to make it a nonstarter, even. It's still doable, but someone with brains'd have to do it. Note on/off is all dcb'll do you for on a Juno, btw. Patch change only works on the Jupiter, IIRC.
  5. Hey gang. I can't seem to get anything off SM's site. I've tried firefox 1.5 and 2.0, as well as IE6&7. I get a 403 on the root and 404s on every other page. Is there a mirror of SidControl floating around anywhere?
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