Voltage regulation issue / 3.3v on Apple II VGA Card (Briel version)

I ordered some Palaveev version PCBs from JLCPCB.  It will probably be a while before they get here though, I used the cheapest shipping instead of DHL since it was about $15 less that way.

I still have some 74LVC245 from Juried left and I can order some more.  I think I still have plenty of ATF22V10 too.  I'll have to order a few more D sub 15 connectors and RPi Picos from DigiKey.

I'm interested in seeing how well the 80 column card emulation works.

Looking at the schematics for all these projects has been giving me some ideas.

I just finished building up 4 of these cards (the Apple II VGA Briel Version) and they work fantastic!

But I must ask;  Might there be a way the Briel Version card could also serve as an 80 column card for the Apple ][ (plain and Plus) if it were installed into Slot 3? (as example)

It looks like everything might be there to do it. [?]   This card would be even more valuable if it could serve as a 40/ 80 column card with VGA interfacing. 

I see others have made this inquiry as well within this thread.

I personally don't have the programming skill to pull this off, but maybe someone here does?

You could possibly have an option to change fonts as well.

Just thinking out loud...

macnoyd wrote:

...

But I must ask;  Might there be a way the Briel Version card could also serve as an 80 column card for the Apple ][ (plain and Plus) if it were installed into Slot 3? (as example)

...

Not possible for Apple II/Apple II+, since it doesn't have the extra hardware. You will need the Palaveev or the A2 Analog version for that.

More here: https://www.applefritter.com/comment/104440#comment-104440

I think the Palaveev v1.2 is the most interesting of this family of cards.

Modnarmai wrote:

I think the Palaveev v1.2 is the most interesting of this family of cards.

Damnit!  I just received PCBs for the 1.1 version from JLCPCB...  Now I'm thinking of binning them and ordering 1.2 boards instead...

CVT wrote:

macnoyd wrote:

...

But I must ask;  Might there be a way the Briel Version card could also serve as an 80 column card for the Apple ][ (plain and Plus) if it were installed into Slot 3? (as example)

...

 

Not possible for Apple II/Apple II+, since it doesn't have the extra hardware. You will need the Palaveev or the A2 A

I think you are correct.  It is the PLD that makes the extra functionality possible I am guessing.

I was interested too, got the boards today.

IMG_20231121_181045.jpg

Nice!