moebius

I shudder in fear :-X M

Hi, It can only be done by the moderators. Bye, Moebius

Hi. THEY might allow it - but show me a Country with such a Laws that allows you to manufacture and sell mains powered, High-Voltage product: A. Without a proper License to work on such appliances? B. Without product being checked by the nameities for the electrical safety? Can you get the drift? So, lets not give wrong encouragement here. Don't get me wrong. I don't have anything against proper novel products based on MBHP/MIOS. (with OK from Thorsten) But with the current statement of Midibox being DIY, I find it highly annoying that somebody thinks He/She can sell something based entirely on somebody elses work for profit. "Well, I build it" isn't a good excuse for me. Now that's done, I'll bully you a little. ;D "Friends help each other. That's what they are for"? The guy build the box without any help and decided to sell it without asking first. I don't think he was in a need for a friend? And by the way, talking politics on the Midibox Forum really doesn't make friends, either. Bye, Moebius

Hi, This might help you: http://69.56.171.55/~midibox/forum/index.php?topic=3650.0 --For off-topic posts at the wrong forum section. Use Miscellaneous for posts not directly relating to Midibox. Bye, Moebius

Hi. It might be a good thing to do - You might even find instruction set from there ;D It handles the low level hardware/midi I/O for you. A good place to start would probably be MIOS function reference: http://www.ucapps.de/mios_fun.html along with some sample applications from the download page: http://www.ucapps.de/mios_download.html It's all there. Just browse it and have fun. Bye, Moebius thanks everybody :) -duncan PS - i spose i should ask, though i'd really rather go the assembly-route: there seems to be a bit more info regarding programming through MIOS in C - would this be a better option? i don't know C, but i've been interested in learning for a long time now. would programming for MIOS be a bad primer? :P

Hi, You can probably abuse it's "oscillator resistor" pin6 as Scott Bernandi has done with PT2399 echo to get longer (and more distorted) delays ;) http://home.comcast.net/~sbernardi/elec/og2/og3_echo.html Bye, Moebius

Great work and progress Andrew!! ;D Keep it coming!! Bye, Moebius p.s. Digisound VCDOs waveforms probably should have a bit nasty character (aliasing). The original design used 741 opamp for the output amp, because it's "bad" slew rate creates a sort of lowpass filtering. ;)

Hmm.. I remember there was talk about using midibox to control Yamaha soundcard daughter board (DB50XG, probably) a loong time ago.. I don't what happened to that. Bye, Moebius

Ah, do I like blue screens ;) Can't give you any recommendations though. Yes, MIOS does support 4x40 HD44780 based (or compatible) displays. These are handled like two 2x40 displays as 4x40 has two enable lines. Bye, Moebius

They just put an audio card in the midibox. Simple as that. Bye, Moebius

Sorry to ask Davo, but are you sure that Xerox Phaser is a laser printer, not a thermal wax printer? ;) Bye, Moebius

Hi, If my memory serves me, AWE32 has YMF262 and YAC512. Bye, Moebius

Yeah, It's the same part.. just remember that SMD parts are "mirrored" in relation to Thru-hole components ;D No. The reasons for MBHP designs are: A. Thru-hole components are easier to solder B. PCB size limit of the freeware version of the Eagle CAD C. Modularity. I thought this was possible with some tweaks?!? I think TK's not going to "reinvent the wheel" or redesigning the Midibox, but looking for new challenges better suited for fpga than a microcontroller/PIC. Bye, Moebius

Hi, Those are just Motorola branded 4051s in Surface Mount Device (SMD) Soic package, right? You'll find those by other manufacturers too - make your own layout and those will work ok. Bye, Moebius p.s. Semiconductor division of the Motorola is these days known as FreeScale. p.p.s. I think TK is playing around with his Spartan III fpga board, but we'll just have to wait for the results ;)

Hi, You can use schematic suggested by Duggle, if you have an AC wall wart. It uses half-wave rectifying and should be ok, because OPAMPs don't need much power. Stable bipolar voltages are important, but voltage levels don't matter that much ie. in a private conversation TK suggested that OPAMPs might even be powered from as low as +/-5 volts. Bye, Moebius

Hi, For some inspiration, check the avrsynth: http://www.jarek.synth.net/ and ATMEGA16 version: http://www.elby-designs.com/avrsynth/avrsyn-about.htm These are simple 2osc synths with LFO, LP-filter and EG.. It would be nice to see a polyfonic wavetable synth.. Bye, Moebius :D

Hi, Originally those were used to read analog voltages from C64s joystick ports (Paddles ect.). Those have no use in MBSID. TK decided to use a simple one-way interface between CORE -> SID, so those inputs or any other registers from the SID can't be read. Bye, Moebius

Hi, We are talking 'bout DC here? First of all at least Fairchild specifies VDrop as 2v for LM78** series regulators. Second, if you use J1 to power the core, there's additional diode drop from the rectifier.. it's 1,4v, isn't it? Much higher voltage than 5v DC is needed to keep regulator working as intended. Well regulated 5v DC can be directly connected to J2 (with regulator removed).. I'd say "less well regulated" 5v DC can be put there too - if 5.1v zener (in a correct orientation) is placed between pins 2 and 3 where regulator used to be.. But for the Midibox FM - you'll need a bipolar power supply for MB_FM opamps. Not in a mood for searching it, but you can find a schematic from the forum that shows how single AC power supply can be used to power it. TK has said, there should be no problem running opamps as low as +/-5V. Bye, Moebius

Hi, kris. For some reasons, the ideas You represent have been popularized lately. I still have to disagree. Yes. But where is it going, then? Drawing a clear line between acceptable uses and unaccetable ones helps to define (DIY) nature of the midibox. It's about sending a clear signal to the people, who can't make smart decisions by themselves, to avoid unintentional AND intentional abuse of the midibox. Sorry folks ;D Actually, I think at least ONE midibox has been build to a friend, that didn't lead to a lenghty debate: Seppomans "Der Brat" - http://69.56.171.55/~midibox/forum/index.php?topic=3651.0 I'll let you analyze how this case was different from the ones that has caused arguments. True. But skills are something you can develop. Maybe starting soldering 11 years old with 45W soldering iron has made me better in soldering, but I'll be damned if 20something picking up a proper soldering iron for the first time of his/hers life can't learn it faster. Midibox is well documented, there's the forum and hey, "there are no stupid questions". Bypassing doing and learning isn't the purpose of the midibox. Individuals building boxes for others is also a question of responsibilities. This should also be considered. With companies and their products, there are warranties and legal responsibilities. Units are tested to see if it passes the regulations. If we're showing "green light" for people to build boxes for others, better the changes are, that some bozo decides he's skilled enough to build some mains powered stuff "for a friend" or to sell. Someone with no knowledge of the electric safety regulations. Bye, Moebius

Yeah! Nice, You'll need that second switching for the AC----- I think?? Bye, Moebius

Sorry, can't help you. You don't even mention what would be the target platform. Thought that assembly was a low level language (near to hardware) and C -> upwards were high level languages? Bye, Moebius

Hi, Different values for the filter caps for the different SIDs and the different rectifiers.. (can remember the voltages :)) No other modofications needed for mbhp_SID.. but how was the firmware.. somebody has answer for that. Bye, Moebius

Metrophage, From the software selection you have listed, I'm guessing that your used on working with composition tools, that allow you to work with certain musical scales. MidiboxSEQ isn't like that, you'll dial midi notes directly for steps with encoders (or pots, in vintage version). Thorsten rejected the idea of including scales (or "force to scale") in recent discussion as, I think, he thought it would be stepping on toes of a fellow DIYer Colin Fraser, whose P3 sequencer has such a function. And AOUT board needs its own power supply of +/-12v and supports full 128 notes in 1V/Oct scaling. Bye, Moebius

Thanks, :D Uh.. well folks-- it means that you should be able call external programs from MIOS Studio too ;) Great work! Bye, Moebius