Upgrading from v1

[mister k]

hi everyone.

just after some opinions/advice on my new sid build.

i currently have a v1 midibox sid which i built a few years ago. it has the minimal control surface. 1 core, 1 sid (6581), 1 din and a (now broken) LCD.

all the pcbs are the original revisions from mike's.

i've aquired an extra 3 sid chips, so i now have 4 (1x6581, 1x8580, and 2x6582). i would like to upgrade to v2 and build a full control surface whilst leaving myself the option of adding extra sids later (when i can afford them).

so my question is this: what can i reuse?

i gather i'll need 2 cores and 4 sids, and that v2 uses a new pic on the core. but can i reuse my current boards.

or will i be saving myself a whole load of hassle by just ordering a full set of new boards?

thanks.

k

[DenDer]

Hi K,

Welcome to the MB forum.

Some answers on your questions. The one core you have and the sid and din board can be re-used.

Nothing has to be thrown away :D

At the moment i'm building what you want to build and i'm at the stage of connecting everything.

You can take a look in the thread called SIDDER. Which is a MB SID v2 build with 4 SID's with full control surface.

MB SID V2

-2 cores with pic 18F4685 to control 4 SID's

-4 SID boards + parts

-3 DIN boards + parts to control rotary encoders and tacticle switches

-2 DOUT boards + parts to led's

a whole lot of cable, connectors, pcb spacers :o

[nILS]

You can reuse all the boards, you'll have to make some minor changes to them though (add a resistor here, add a diode there, ...).

There's a slight problem in your setup concept though. The way you want to set the thing up (2CORES->4SID) it's not recommended to mix different SIDs in a stereo pair, which you'd have to do (6581 + 8580) as the filters sound differently, some combined waveforms don't work and so on. There's a thread partially about that here

[TK.]

http://www.ucapps.de/midibox_sid_manual_up.html

Best Regards, Thorsten.

[mister k]

cheers for the help guys.

so i'll look at the schematics and figure out which bits i need to change then get going with it.

and i'm right in thinking i can just bung an 18F4685 in my old core, change a few bits, and it'll work? (after programming the bootloader, etc. of course)

i didn't realise mixing the chips would cause problems, cheers for the heads-up. i think i'll just live with it for now, then when i get round to adding more sids i'll keep them in pairs.

i'm going to start gathering parts this weekend so i'll let you know how it goes!

[mister k]

http://www.ucapps.de/midibox_sid_manual_up.html

Best Regards, Thorsten.

haha!

dunno how i missed that!

cheers mate.