freddy

Thanks for reply, but: - R80 is in place - none of the jumpers seem to be missing (which one did you mean, in particular) - firmware is in there - connecting the LCD to each of the cores (save the master) yields the same message - banner message and info about not launching CS.

Hello, I've build fully-stuffed Wilba's PCBs with 8x SIDs and I am running across communication problems. When working with CS, it complains it cannot access one of the SIDs (SID3 to be precise, but I doubt it matters). The CS complains about MBNet problems (the message is 'SID3 not available' and '(No MBNet Response)' according to the sources, I cannot find reference to the 'TEXT_CS_MENU_MBNET_NO_RESP' anywhere, however. Furthermore, after some time of using SIDv2, I get '(CAN Bus Errors)' message and another SID (SID4) becomes unaccessible, however it plays the MIDI events/notes as expected, I just cannot access it and change the parameters. After powering off and back on the SID4 is accessible again, SID3 is not. Any hints what to look at? I've already measured the PCB links and everything appears to be okay, no shortcuits, no exceeding track resistance, nothing visible. The MIDI itself works okay, I'm still able to use the remaining two cores with no problems. THanks, freddy

Steve, unfortunately it's not mine, but I'm going to get one within a short time. If I get a reasoable MIDI software (both sequencer and MIDI-OX-like), I'll be using it to drive the MIDI stuff. Regarding sequencing software, I've found Bars&Pipes on some (warez) site, I'll give it a try, but first of all I need a MIDI interface. An Atari ST might be better, since it has MIDI built in. Regarding MIDI iface, I've found several designs, some with no ICs, some with 1488/1489/CMOS logic, so I have to find out which one is the right one. Cheers, freddy

Hello, anyone can recommend some DYI MIDI interface for Amigas (namely 1200)? Also, some MIDI sequencing software might do as well. I found some on Aminet, but those are built from US parts, it's hard to find some equivalent in Eurote, so European parts are recommended. Cheers, freddy

I've found (sort-of) answer to the second question in the article 'a question of voices...', so only the first part is important. or, if you have some addendum to the mentioned thread, I'll appreciate it as well, of course. hell, replying to my own post... :)

Hello, somewhere (I don't remember whether on ucapps.de or on this forum) I've read, that it might be possible to assign every _oscilator_ a single MIDI channel.. Is this true or is it just my wish? And exactly the opposite, how to play several patches at once? just with several SID modules or can I say that every patch will only be served by one oscilator and get 3 voices on a single channel with a single SID? anyone can bring me light into this kind of mess-up? Thanks, freddy

Cpt, thank you very much, I must have overlooked it!

one more thing regarding SID, did anyone managed to get (as much as possible) General MIDI instruments into the SID, so that they sound like GM :) ? can this be shared?

folks, I've got almost ready-built SIDs + cores, however some questions appeared; 1) regarding reusing C64 PSU with 4 SIDs/4 cores, C64 delivers 9V AC according to the schematics and also according to my multimetee. the rectifier causes a drop of appr 1.4V, 7809 another voltage drop. so where do the 14V DC appear? SIDs need 12V (6581 version), rectified and smoothed from C64 PSU yields max 7V, where do we get the doubled voltage from? 2) I know this doesn't matter really much, but the filtering capacitors (2.2mF and/or 1mF) should or shouldn't be seated in both SIDs and cores? since the PSU deliveres smooth 5V DC, I don't think these have to be seated in cores, but perhaps they should be seated in SIDs, although we deliver DC to the SIDs? also, there are incosistency between the SID schematic and PCB, in the schematics, there is a 2.2mF capacitor, in the PCB 1mF. where's the truth? 3) regarding point (2) in mbhp_4xsid_c64_psu_optimized.pdf, 'a 7809 removes the AC part of the SID module'. does this regard only the rectifier and AC power connector? there are no more AC parts in the schematics, are there? I'm really messed up with this things, anyone can clarify? Perhaps I'm missing something, since lots of people built this and I haven't seen these questions yet... cheers, freddy

hmm, I think I got the point. To make sure, when I turn it a step, it is connected (ON), when I turn it further a step, it's disconnected (OFF), right? with an exact timing and a Schmitt cicruit you can even make a square signal, eh? :)

I'm new to MIDI/MBHP, not electronics, so this isn't a big issue for me ;-) anyway, JDM is already built, core, SID etc are almost ready, just to get SID chip(s) or C64 :-) don't worry, guys, I'll join you soon ;) cheers, freddy

folks, can anyone explain me function of 'rotary encoders'? according to the schematics it looks like coupled switches, according to PCBs, fotos etc like pots. I'm trying to find a similiar expression in my language, but I can't since I dunno how these work :-/ cheers, freddy

Resending, 'troubleshooting' wasn't a really good place for this. Hello Thorsten, possibly others, I'm newbie to MIDI and I started from scratch with the most basic MIDIBox Plus. I've decided to create Martin's PCBs, however I've found inconsistency with Thorsten's schematics. According to notes, the PCB is based on 'older' version of the schematics. Also, according to Martin's PCB notes, it's slightly extended (more MIDI outputs/thrus). Since Martin didn't reply to my mail, can anyone supply me with the schematics of 16pot version Martin routed the PCBs from? Thanks in advance, -- freddy