Trapstate

Oooops ::) Indeed that was the problem, I thought MIOS was already integrated in the application. Your schematic picture makes it very clear, now people like me can't go wrong anymore!! But my problems aren't over (are they ever?) This is what I get when I power-up: 00129A32 1 -- F0 Buffer: 8 Bytes System Exclusive SYSX: F0 00 00 7E 40 00 01 F7 0012A198 1 -- C0 00 -- 1 --- PC: Acc. Grand Piano 0012A199 1 -- C0 00 -- 1 --- PC: Acc. Grand Piano 0012A19A 1 -- C0 00 -- 1 --- PC: Acc. Grand Piano So far so good (I think), but still my SId remains silent. Tried configuring midi channel in Jsynth and trough sysex and payed some notes: nothing. Sent some example patches: still nothing when I play notes. Patch dump request works. When I measure the connector, I only see data on the S0 and SC pins, wich drive the SID's cs# pin and the HC595 sclk pin respectively. I'm thinking maybe I fried my SID during my measurements. It's ouput pin is now 5V DC., just like the input pin. Core seems to be ok now, right?

Thanks Thorsten! Well, I load a standard configuration of MIOS sid 1.5b, so it can hardly be an unknown MIOS error. Must be the hardware then, I installed everything except a few headers, P1, P2, R3 , R4 and the BC. These last components are all for the LCD, wich I don't want to use ( I want to control the SID from my RS7000 harware sequencer). But maybe these componements *are* crucial for MIOS, so I will stuff the core completely and see what happends. Trapstate

Indeed no LCD is connected (or the componements to support this, like the pot's and the bc337), but I program the bootstrap as default so device ID is all 0's. Tried to open the small skeleton project in MPLAB 6.30, but I got a "no valid project" error (no files were in use at that moment). So I just opened and edited the main.asm file as you suggested, build it and coverted it to sysex. But I still get upload requests after I sent sysex (again checksum is ok). Is there a way to bypass the bootstrap and directly flash MIOS_SID?? Trapstate

It did, tested it with hex to sys and all checksums match! So why do I keep getting upload requests??

Hi! Unfortunately the problem is still there. But it's not the SID board, it's the core. When it switch on the core, programmed with the bootstrap loader, it sends out it's upload request sysex. I load MIOS in MIDI-OX, configured with 700 ms delay after F7. Device ID is all zero-ed, as default. When I send sysex, the bootstrap loader responds with 0f sysex. But after the upload it returns to sending upload request sysex!! Erased and reprogrammed the PIC, same thing. What could be wrong ??? Guess it can only be the midi in, but the midi in looks OK. Even checked the signal after the optocoupler with my scope, looks ok afaik. Does the bootstrap loader have an echo function, so I can send "test signals" to see if midi-in is working correctly? Trapstate

AFAIK the circuit behind the SId should work as a audio buffer (unity gain) to protect the SID's output. You could try removing the SID (make shure you're not static charged!!), placing an audio signal on the SID out pin (and the other one of you're audio signal to ground) and than listen to the signal which comes out of the connector of the SID board.. I'm not sure if this will help, the mp3 you uploaded sounds kinda digital, maybe it's the cable between the core and sid or the 595 registers...

I erased the 18F and programmed it with device ID all zero-ed (as default), but no succes. I/O delay doesn't help for me :( I also get more than 13 "0F syex" messages back. I guess I'll start looking for a 16F :-/

If you use the 16F, than you could try the SId_V2 test program which should play a chord at powerup. What did you connect the SID to, are you sure the sound is not clipping?

BC547C is fine, it's the recommended transistor ;) So you can program a 16F, but you can't program a 18F? Strange, do you use the JDM programmer? Did you select the correct device in the software? Do you use a 8,2V or 8,7V zener? Is the connector of the serial cable connected to the ground of the programmer?

No, it doesn't seem simple to compile this into a hex file. I hope somebody knows how to tackle this, else it will be the 16F for me...

Hey Nils, What problems did you have with the PIC18F? Regarding your sound problems I would check the output stage of the SID: are you sure both polarized caps are connected correct? What value caps do you use for filter? Did you use the 547B transistor? If not, check to see if the pinout matches the replacement. You can also try sending different presets via Jsynth. good luck trap.

Looks like I have the same problem Dgsonics. I can send MIOS and the PIC responds with 0F messages, but after powerup it keeps sending the sysex every two seconds. I've tried this several times. Electrically everything looks and measures ok.

Thanks Thorsten! Guess I wanted things too quickly :) I've uploaded MIOS and installed Jsynth. All went wel, core sends out it's sytem exclusive and confirmed the upload. But still I get no sound out of my SID 6581. Tried configuring MIDI channel via Jsynth and sysex with my sequencer. Sent some example patches, but not sound when I hit a note on the designated channel. The PIC gets MIDI in, and sends out an intermediate 1Mhz pulse. But when I measure the pins of the connector cable I see nothing on my scope. In addition I find my SID getting quite hot, though voltages are correct. Is this normal? Anybody some tips what to look for? Trapstate

Hello people, I have built a core and SID module, but I'm having problems getting it to work. This is what I have done so far: - Voltages of Core and SID are correct - I can program and verify the 18f452-1/P I loaded the sid_v2 test program, but no sound :( It could be the SID, but I suspect the core because when I connect LED from TX pin to GND via 220 ohm than it does not light. When I measure the pins of XTAL I see nothing my scope, there is also nothing on the 1Mhz PWM output pin, which I would like to use for my SID. So: - changed crystal (first was an 10 Mhz, second was a 8Mhz, I know this is wrong but I still should see some life right?) - changed XTAL capacitors But still no sign of life.. Can anyone tell me what I should measure between XTAL and it's Capacitors? Any tips and sugestions are welcome... Trapstate

Berlijn was inderdaad gezellig ja ;D, ik had al zo'n vermoeden dat die overschrijving lang zou duren, niet echt de snelste oplossing...

Berlijn was inderdaad gezellig ja ;D, ik had al zo'n vermoeden dat die overschrijving lang zou duren, niet echt de snelste oplossing...

Ik ben ook bezig met een Nederlandse leverancier, mogelijk is een IA mogelijk, maar dat laat ik t.z.t. tijd wel weten.

Als het morgen besteld wordt kan ik nog wel meedoen, ik dacht dat het nog veel langer zou duren... Ik heb een SID, CORE en JDM print nodig. Che: mail je bankgegevens naar Trapstate (at) hotmail (dot) com en ik maak het geld vanavond nog over.

Als het morgen besteld wordt kan ik nog wel meedoen, ik dacht dat het nog veel langer zou duren... Ik heb een SID, CORE en JDM print nodig. Che: mail je bankgegevens naar Trapstate (at) hotmail (dot) com en ik maak het geld vanavond nog over.

ik wil die printplaten eind volgende week hebben. Dat gaat dus niet meer lukken, dus ik haak af met bestellen en ga die dingen zelf etsen. Ik had toch nog een eigen ontwerp liggen wat ik nog moest etsen :) ciao

ik wil die printplaten eind volgende week hebben. Dat gaat dus niet meer lukken, dus ik haak af met bestellen en ga die dingen zelf etsen. Ik had toch nog een eigen ontwerp liggen wat ik nog moest etsen :) ciao

He luitjes, gaat er nog besteld worden? Binnenkort ga ik naar het buitenland, en ik zou graag mn SID mee willen nemen ;D Anders ga ik ze misschien toch maar zelf etsen...

He luitjes, gaat er nog besteld worden? Binnenkort ga ik naar het buitenland, en ik zou graag mn SID mee willen nemen ;D Anders ga ik ze misschien toch maar zelf etsen...

Wat mij betreft hoeft er niets voorgeschoten te worden, ik kan mijn bestelling ook meteen overmaken. Ik heb alleen een SID, Core en JDM print nodig. Als dat goed bevalt komen er nog drie achteraan :)

Wat mij betreft hoeft er niets voorgeschoten te worden, ik kan mijn bestelling ook meteen overmaken. Ik heb alleen een SID, Core en JDM print nodig. Als dat goed bevalt komen er nog drie achteraan :)