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

159 posts / 0 new
Last post
Offline
Last seen: 12 hours 31 min ago
Joined: Jul 5 2018 - 09:44
Posts: 2160
I ordered some Palaveev

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.

 

macnoyd's picture
Online
Last seen: 51 min 29 sec ago
Joined: Oct 15 2012 - 08:59
Posts: 818
I built up 4 of these cards and ...

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...

CVT
CVT's picture
Offline
Last seen: 12 hours 35 min ago
Joined: Aug 9 2022 - 00:48
Posts: 771
macnoyd wrote:...But I must
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

Online
Last seen: 54 min 59 sec ago
Joined: Sep 9 2021 - 01:43
Posts: 9
Palaveev 1.2

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

Offline
Last seen: 12 hours 31 min ago
Joined: Jul 5 2018 - 09:44
Posts: 2160
Modnarmai wrote:I think the
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...

 

 

 

Offline
Last seen: 12 hours 31 min ago
Joined: Jul 5 2018 - 09:44
Posts: 2160
CVT wrote:macnoyd wrote:..
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.

 

Macintosh_nik's picture
Online
Last seen: 22 min 29 sec ago
Joined: Jan 8 2021 - 05:18
Posts: 329
Hi guys!

I was interested too, got the boards today.

Offline
Last seen: 12 hours 31 min ago
Joined: Jul 5 2018 - 09:44
Posts: 2160
Nice! 

Nice!

 

Pages

Log in or register to post comments