Syntax

Yeh would be the most obvious way fowrard I guess, just have to dismantle the darn thing ;-) Thx

Hi all, After becoming dusty I just wanted to revieve my MB6582. So after having found a decent PSU, it all start working again ;-) Only SID 4 left channel is not working. I already swapped SIDs, still the same problem. Any thought what could be the problem? Cheers Frank

The middle one type brick

The condition of the SIDs however still worry me :hmm:

I've check the PIC's today. Seems they still can be flashed with zero errors. I assume they are still OK.

Not yet,I was planning to build a custom one with some more power. I think now I HAVE to build one. But I'm afraid the SIDs and PICs are damaged. I'm not sure, could anybody confirm damage would occur at approx 7VDC?

Hi all, After having some joyfull moments with my MB-6582, it suddenly stops working. When applying power the leds of the CS light up in a split second, next the LCD starts flashing without any text. No sound at all. I've measured at J25 12.3V, at J4 for the 5V rail 7.4V and for the 9V rail 9V. I've checked the PSU plug as well measuring at the 5V rail 7.27V and at the 9V rail 10.65Vac . I'm afraid some chips are fried at 7V. Could this be the result of a defective C64 PSU giving too much DC volts?

Look simular to to problem I had, perhaps its worth checking out.

I knew I had read it before somewhere! Oke let's summerize Analog (CV) Inputs This feature has to be explicitely enabled within the setup_*.asm file by setting DEFAULT_J5_FUNCTION to 1 - once you did this, all unusued analog inputs must be clamped to ground in order to prevent random values! This is especially required for the slave modules, when the master firmware will be transfered to the slaves via ECAN (clone feature). I assume when cloning the masterpic (0) this DEFAULT_J5_FUNCTION is also set for the PIC slaves 1, 2 and 3. All 8 analog inputs are sampled with a frequency of 125 Hz. Multiplexing (-> MBHP_AIN module) is *not* supported! So, 8 inputs are maximum. The firmware currently only uses the first 5 inputs of J5, the remaining 3 are reserved for future features. The converted values are forwarded to the knob handler. This generic approach gives you all advantages of the knob concept: value changes can be forwarded to two sound parameters, a Min/Max range can be specified, and the converted values are also available as modulation source! So the header J5 provides 5 analog inputs for each PIC? AIN is not supported, that's understood. Input range values are 0-5V, an additional circuit must level CV voltages to 0-5V, which is no rocket science :whistle: can do that The feature behaves differently on master and slaves: Master: analog inputs are forwarded to the *selected* SIDs. This has the advantage, that each SID can be controlled from a single set of pots and/or joysticks. If you find this impractical, a small and harmless firmware patch (AIN_NotifyChange: remove the branch to "AIN_NotifyChange_Master") allows you to realize a dedicated control for the master only. Slave: analog inputs are only handled internally independent from the selection. Note that this feature can also be used to control the SID from analog signal sources, e.g. from an analog step sequencer, or an analog LFO. So default the system is setup with 'master behaviour'. How does this relate to the knobs menu for the slaves? And will disconneting the master result in 4 seperate' controllable PIC, hence each PIC will have it's own seperate analog input control? And is this called 'slave behaviour' or is this another feature? b]Analog (CV) Outputs Let's use an AOUT_NG module. This must be connected to header J6_Core. Which gives 8 channels of CV out. In the schematic referred to in the AOUT_NG description, two gates out are mentioned. What has happenend to them as I can't trace them in the NG module schematics? :wacko: data connection to the core. The pin assignment is the same as on the AOUT module. For connection to MBSID, the blue lines on this link show the necessary connections. In total 4 AOUT_NG modules could be connected, so 1 for each core? Confused again In the manual section CV option the following is described In addition to the analog outputs, the firmware allows to control 8 digital outputs (e.g. switches, gates, triggers) as well. The state of the outputs is stored within the patch structure, so that the setup can be recalled. In addition, the outputs are accessible via control surface (-> EXT menu), NRPNs, Knobs, Wavetable sequencer, etc... The outputs are either available at J5 of the core module (set DEFAULT_J5_FUNCTION to 3), and/or on a DOUT shiftregister (set ENABLE_AOUT to != 0, and set DEFAULT_EXT_SWITCH_DOUT to a value between 1 and 16). Optionally, internal gate/slide and accent signals can be forwarded to the digital outputs as well, which gives you the possibility to trigger external synths the same way like the 2*3 SID oscillators (per core). The outputs are available on header J5_Core. At first this was the analog input header. How does this match? Well apparently the J5 can do both I discovered. Are the digital output also limited to 5 like the analog inputs? Why bother? Well I just like experimenting with my modular and overheating my soldering iron :laugh: Therefore I would regret not utillizing the full potential of the MBSID. A long story to tell but usefull for me to decide how to expand my MBSID and hopefully also for others. Any feedback on questions above is appreciated. Thx

Hi all, I want to use the full potential of my MB6582 and therefore exploring the possiblilities of the expansion port. I read some posts and manuals on this subject, but still dazzles a little. Some statements and questions below... 1) Using Analog (CV) inputs. Could I use a AIN module to extend the analog inputs (multiple them). Does this make sense in respect of the capabilities of the MB6582?. If so I have to connect to J5_Core and J6_Core. If not could I directly hook up to J5? (respecting the 0-5V input range of coarse :smile: ) 2) Using CV outputs. Do I need an AOUT module? and therefore hook up to J6_Core 3) As the MB has 4 cores does this mean I could have CV inputs and CV outputs four times? This will need a 50 wire cable for the expansion port (I'm thinking of a SCSI cable) hooking up to a breakout box with proper jacks/pots etc for all the fun. And finally is this thought meaningful? I'm sure I missed some posts so some questions are probably answered elsewhere which I couldn't find browsing the website and forum all evening. So any help in this is highly appreciated.

Nothing to complain here!

Will keep it in mind :)

Well I replaced the resistor with a 120K value and the display is perfect. Hopefully the LED did not suffer a lot and will last forever! The PSU voltage still worries a little. I just start using the thing and see if it will give any problems. Thx Wilba keep up the good work!

I'm using a white text on black background LCD. And so far as I can see its edge-lit I can remember during first testing the voltage was near 5VDC. So probably the PSU can handle the load. I'm having a C64 PSU model 'brick' which should deliver 1.7A on the 5VDC line. On the other hand I used bright LED's. To have an acceptable brightness I had to use 7,5K resistors I did replace T1 with no results, so I assume this circuit is OK If I get my hands on some resistors I start trying different values. I'll keep you informed!. Thanks for now.

Had some other business lately, but for now I'm want to sove this LCD flickering flashing issue. As suggested before, this could be PSU related. When fully loaded (8 SIDS and LCD) I measuring approx, 4,5 VDC on j3. Is this critical? The display I'm using is a black/with Displaytech Ltd LCD MODULE 204A SERIES with following specs for the backlight. For Supply voltage VF (V) Typical 3.4 and Max 3.5 For Supply current IF (mA) Typical 20 and Max 25 Any help in this is highly appreciated