24LC512 with Pic based core

MIDIbox SID
1

Hi,

I’m trying to come up with a PCB for the minimal surface Core8 based SID V1.

I have a hand-wired proto with one 24LC512.
I modified the setup_8580.asm file with “#define DEFAULT_BS_TYPE        1” and recompiled the firmware.
It works fine, the 24LC512 can save 2 banks (A & B).

On the PCB i have some free space and i wanted to add a second DIP8 for a second 24LC512.

I’d like the second 24LC512 to store bank C & D.
My question is : must it be wired as the A=1 or A=2 24LC256 based one this shema:
http://www.ucapps.de/mbhp/mbhp_multi_bankstick.pdf

Thanks,

Xavier

2

Hi Xavier,

interesting that somebody still builds a MBSID V1 :slight_smile:

For the DEFAULT_BS_TYPE == 1 configuration, address selections A0, A1, A2 and A3 are used. A4-A7 are not addressed.

Best Regards, Thorsten.

 

3

 

Hi Thorsten,

Thanks for the reply.
Yes i’ve found a populated core and SID V1 boards that were useless in a box for a long time.
I’ll try to put the synth in a 19" 1U Rack with the simple CS.

But after i posted my message, i’ve ordered an other SID PCB, a 8580 and a PIC18F4685 to turn my old midibox V1 into a stereo V2 :slight_smile:

Best,

Xavier