TK.

This is already available :) E.g., press and hold the SID1 button, thereafter the menu button - this will play a note on SID1. Press this combination again to release the note. Best Regards, Thorsten.

Btw.: I just remember, that the LM317 only works correctly under load. You could connect a 470 or 1k Ohm resistor between the output pin and ground in order to check the behaviour Best Regards, Thorsten.

Please search for "mbhp_core_extract_io_loopback.gif" and read the description around this link at http://www.ucapps.de/howto_debug_midi.html You don't need to upload any application in order to make this test There are a lot of additional tests as well, where you don't need the PIC - they are very important to check if your core module is still working, and they give us important hints what could be wrong. Best Regards, Thorsten.

And again: please try the io loopback tests! They are important, no additional answer before you've checked the MIDI connections in this way - it's just too time consuming Best Regards, Thorsten.

Is your core running with bootloader v1.1b or v1.2? Did you already update to Bootloader V1.2, MIOS V1.9, MBSID V1.7303? (Please don't do it immediately, I only want to know, if you did this before, and that you are now trying to upload an incompatible version) Best Regards, Thorsten.

Could you please try the complete test? (e.g. io loopbacks...) Best Regards, Thorsten.

Thats strange. I just have checked it again, my own MF module is stuffed with a 1k pot Did you already try another pot (I guess you did? because you always speak in riddles ;-) Best Regards, Thorsten.

The formula is wrong, where did you found it? You need to add an additional part to v_out which depends on the adjusting current and the voltage drop at the pot voltage Why troubleshooting section? Are you not able to reach the 8V? I can select the voltage between ca. 5V and 10V. A higher pot value would make adjusting more difficult. What is the input voltage of your MF module? Best Regards, Thorsten.

Are all the jumpers at the programming port J3 closed? Best Regards, Thorsten.

Of course, the jumpers at the programming port should always be closed. They are only for programming via JDM or MBHP_BURNER Without these jumpers, your core will be powered from the MIDI connection, and this cannot work reliable So, is the upload working again with the jumpers? Best Regards, Thorsten.

Something that is new to me is, that some blocks can be uploaded correctly. Does this happen randomly? Or are these always the same blocks? Could it be a problem with the power supply? The PIC18F452 consumes (a little bit) more, since it runs at 40 MHz... especially during flash programming. Means: during code upload In general multiple "F0 F0 F0 F0" indicate, that the core has been reset several times. This can happen on: - no enough power - USART receive overrun error (unlikely so long the PC interface is working) - USART frame error on received bytes (can happen if the PC interface is running at a slightly incorrect baudrate) The rest of the bytes behind F0 which don't match with a common upload request could be related to a driver quirk on the PC MIDI interface. But it can be ignored, because the previous bytes where already wrong Best Regards, Thorsten.

So, if it has worked before, there is a high chance to detect the problem by going through the MIDI troubleshooting list: http://www.ucapps.de/howto_debug_midi.html Which tests are working, which not? Best Regards, Thorsten.

Could you please copy&paste all messages which are print by MIOS Studio within the upload window? Best Regards, Thorsten.

Sidenote: I already tried to help Shum via email, but without much success. So - if anybody else has an idea? Best Regards, Thorsten.

My proposal is to let these caps on the core module, and to bypass the outer pin holes of the 7805 (which is not mounted) as well as the pin holes of the rectifier (which is also not connected), so that all caps are routed to 0V/+5V This results into less noise at the digital line -> better sound capabilities! Best Regards, Thorsten.

Ich verwende keine Abschirmung, klappt trotzdem ;-) Gruss, Thorsten.

No, this is wrong. The modulation matrix provides two different modes. In one mode, it shows the connections between the source and targets. This display is always correct, you can switch to a slave and you will see the connections made for the slaves. Then there is a new feature which I've quickly implemented based on a suggestion from a user. It shows the current (modulated) LFO and ENV values in realtime. You can see the waveforms sweeping! This is always a very nice attraction when you show the MBSID to your friends. Of course, these sweeping values can only be known by the PIC at which the engine is running, therefore you can only see the master values If you don't like this feature, just switch to the normal mode! Best Regards, Thorsten.

Ooof, your J2 connections at the SID module are looking very error prone! Best Regards, Thorsten.

Yes, the matrix is only a supplement. You could even control the modulators without any control surface, if the core module is connected to a PC, and you are using the JSynthLib editor, or a program which allows you to send MIDI Controllers Best Regards, Thorsten.

Meinst Du wirklich Pin #25, oder Pin #6 des SID (dort wo vorher der Oszillator angeschlossen war). Dieser Pin muss nun mit PIC Pin #17 verbunden werden - siehe Schaltplan, dort habe ich es beschrieben. Damit in Zukunft nicht noch mehr Leute darueber stolpern, habe ich bereits eine neue Core und SID PCB Version in der Mache. Deshalb wird die MBHP_CORE und MBHP_SID Seite momentan auch nur stiefmuetterlich gepflegt - das wird sich aendern Warum: die Details stehen hier http://www.midibox.org/forum/index.php?topic=5748.0 Kurzbeschreibung: wenn PIC und SID Takt asynchron zueinander laufen, kann es vorkommen, dass bei einem Schreibzugriff auf das SID Control Register das Gate getriggert wird, obwohl es bereits geloescht war. Gruss, Thorsten.

Yes, the transistor will work with both voltages without danger Best Regards, Thorsten.

Hi, the most common error which are made are wrong interconnections between SID and CORE module - note that on the old PCB versions, the two 8pin ports are not connected 1:1. At the MBHP_SID module webpage you will find some diagrams which show the wiring (e.g. mbhp_sid_c64_psu.pdf), and at the MIOS download page you will find an mbsid_interconnection_test which allows you to test all cables to the SID module Is this test passing? (Test procedure is described in the header of main.asm) Best Regards, Thorsten.

You've got mail Best Regards, Thorsten.

I want to start with the implementation in autumn 2006, I assume that the final release will be ready very fast if everything is planned properly (this document and the long time span until the start). Most features which are listed here have already been evaluated in MIDIbox FM, MIDIbox SEQ and MIDIbox SID-D, so that I don't expect difficulities. Since MBSID V2 will be almost hardware compatible, I don't know if it really makes sense to wait - just start with MBSID V1, and upgrade later Best Regards, Thorsten.

Maybe there is an internet cafe close to your location where you are able to download all the required packages for 1..2 EUR? Best Regards, Thorsten.