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Found 7 results

  1. Aside from the neat cross-over between classic computers and synths with people like Bil Herd and Bob Yannes, I find it interesting to see how some of our favorite CPUs crop up here and there in the music industry. So I started making a list of synths and samplers that made use of various old-skool CPUs. To start things off, here's a list of what I've been able to find so far. Feel free to correct any errors you might spot: Roland Jupiter 8 Z80 Sequential Circuits Prophet 5 & 10 Z80 Sequential Circuits Prophet 600 Z80 Roland MC4 Z80 Ensoniq EPS-16 68000 E-mu 4060 Z80 Roland MSQ700 Z80 Oberheim OB-8 Z80 MemoryMoog Z80 Emulator I and II Z80 Akai 2700 Z80 E-mu SP-1200 Z80 E-mu Drumulator Z80 Sequential Circuits Drumtraks Z80 Fairlight CMI series II 6800 Fairlight CMI series IIx 6809 Oberheim Xpander 6809 Oberheim Matrix 6809 PPG Wave 2.x 6809 PPG Waverterm A 6809 Ensoniq SDP-1 6809 Ensoniq ESQ1 6809 Ensoniq SQ80 6809 Fairlight CMI series III 68000 and 6809 Quasar M8 6800
  2. Hi everyone I'm proud to present the MidiBox TIA Cartridge! This is the first FULL midi synthetizer based on the TIA chip and cartridge cased. This is a DIY project, the firmware is opensource. It was not easy. Not because of the technical issues, just bad karma. In 2011/2012 I made a working firmware and a manager under Max/MSP. Because of personal reasons, I put the project on hold. End of 2012, I received a message from Eptheca who asked me the status of the project. With his help we decided to print 3 PCB’s. Unfortunately during this period, the hard drive of my computer suddenly decided to leave me, and I lost all my work: (( I sent the drive to Shanghai to try to recover my data, but of course my disc was one of the non-recoverable 10% (always this bad karma). So now we had the box and the electronics but nothing to put in it. In February I decided to rewrite everything but it took me some time. ... Done! We've now got a new firmware and the application to manage the box. I am inspired by the version 1 MB-SID. I kept all the features of this engine. I improved the management of banks, I dedicated two envelopes to the voice of the TIA which is free, and a few small details that might please you. Here is the features of it: 1 dedicated envelope for each voices(so 2) with optional non-linear curve and Sync which can be assigned to Amplitude and pitch. 3 specifics Mode to mix Modulation matrix and this env Env+Mods, Env*Mods, Env+(Env*Mods). 2 additional envelopes with optional non-linear curve and Sync which can be assigned to Amplitude and pitch. 4 additional LFOs with different waveforms and Sync which can be assigned to Amplitude and pitch. Pitch Bender Portamento/Glide function with Optional "Constant Time Slide". Delays 1 Arpeggiator for each voice(so 2) with optional Sync. Poly, Mono and Legato Mode Separate keyboard zones for each voice (key splitting) allows to play voices separately Extended Mode for keys(all note reponse) or non extended with offset and length. 1 velocity response for each voices (so 2) with optional CC assignment Free controller assignments to Modulation Wheel and Aftertouch LFOs, Envelopes, Arpeggios optionally syncable via external MIDI clock (one for each;) Bankstick support (4 banks of 128 sound patches per stick, up to 8 can be connected) so 32 banks. And much more. Coming soon: wave and CC sequences which allow more percussive sounds (Wavetables) with dedicated banks. Drum or Fx Kit Presets with dedicated banks. 8 Analog I/O 4bit sampling Atari 2600 Joystick and Video touch pad support. There's no CS on the cartridge version, but there's enough room in FW to add it. If someone wants to create it, you are welcome. This firmware is only for 18f4685. You can add MB-Link too if you need it, PORTA.0-7 and PORTB.0-3 share 8 I/O on the AUX connector. No CS; but I designed a Max/MSP Application (windows and Mac compatible): And it has iDevice support(sorry for those who boycott Apple products): I'm trying to finish a Max4Live version, with a common file between both applications that will retrieve the names of banks, patches and all parameters without having to open the input of the midi track and make a CC request (there's no SysEx in Ableton Live). Now i suppose you want to hear it: http://soundcloud.com/bdupeyron/mb-tia-mantua-preset Voilà!!!
  3. Here is the beta version of Colour Synth It is a sound synth that produces colour. Read the enclosed beta documentation. This is just a starting point for the full fledged synth I want to create. Thank you quadrunner for the tech advice.... to run simply load csynth.obj in dos 2.0 any problems can be reported here. coloursynth.atr
  4. I've recently become fascinated, again, with early software synthesis. For example, take Eugene Jarvis' sound engine in Robotron and Defender: I love that it ran on such a limited processor. But the thing that really gets me as a synth geek is the parameter space-- the fact that you can do so much with what I think he said was 8 parameters (in the Robotron GDC post-mortem). I see that he goes into a little more detail here: http://www.firepowerpinball.com/downloads/Eugene_Jarvis_Interview.pdf-- it's funny too because we always think of general-purpose-CPU softsynths as a late 90s phenomenon! Now, I see someone has done a commented Robotron disassembly, but I don't think they got to the sound system. I'd love to find more info about it, short of disassembling it myself. I also noticed that Konami's Time Pilot '84 produces a lot of similar tones. It supposedly uses one of those simple squarewave+noise PSGs, but it's driven by a reasonably fast CPU, which makes me wonder what's really going on there. Maybe it's manipulating the sound chip's registers really fast, or there's a bit-bang channel in addition to the sound chip. I think some of those dedicated PSGs had simple amplitude envelopes you could leverage, too..? Any other arcade games that use or are suspected of using a softsynth to generate their sounds besides these and the Namco games? Any tones that strike you as particularly neat? I might play with some primitive softsynth concepts tonight. I want to see if I can make one that barely branches, and also see what FM does with such low resolution grainy tables (for example, do you really need a LFSR if you've got FM feedback?).
  5. Hi all. But a question that's been burning in my mind in the past few months is if it is possible to build a synthesizer utilizing the 2600's TIA (or even two of them) to build a Minimoog style synthesizer. I've seen broadly similar projects (google them) like midi controlled TIAs, & the Gatari 2600. But would going all out & adding "Moog style" controls, a VCA, VCF, pitch bend & modulation wheels even work? (assuming it's even possible) Just a question I thought I'd pose to the hardware hackers & mods here. I'm sure this will make for some interesting reading!
  6. I just recently got an atari video music from ebay for a fairly cheap price . It seems to be in good shape but however it is missing a peice of the wood side panel . Is there anywhere to get a replacement for that peice considering the rarity of the avm? Another question I noticed theres models that contain different text on the front panel . Is there different versions of the avm? Or was this slight change in design ? I got the model in the top picture Thank you
  7. hey guys , i have a mssiah synthcart from 8-bit ventures for my c-64 and i was wondering if there exists anywhere a synthcart for the atari 8-bit machines to access the pokey chip in a similar way as mssiah. i have looked every where and even asked 8-bit ventures if they would do one and they said they had no intentions of making one . if one does'nt exist, is there anyone that knows basic well enough to make something like this ? could put the program on a flashcart maybe ? and modify the computer with midi? Also does anyone do midi modifications to the 800xl ? i just really want to be able to control the pokey chip through my daw and midi sequence it like i do with my c64. i love the way the pokey sounds , probably even over the SID. any good direction on this would be awesome . please help i have been trying for well over a year for a solution . thanks alot
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