Hi Heart and eslapion, This is a great discussion. It's giving me lots to think about regarding memory expansion devices. I'm sure others will find this discussion very informative when making choices for memory expansion upgrades too. There indeed seems to be a wide selection of different hardware ...

Hi Heart,


Thanks so much for this detailed information. Just what I was looking for.

I had a suspicion that Geos could use more than 512kb ram, but I wasn't sure.

Interesting that some games can make use of ram.

Hello, I was wondering if for example, a Berkeley Software's Georam cartridge (or for that matter any type of memory expansion) above say 512kb is used by any software? https://www.google.com/search?q=georam& ... e&ie=UTF-8 The reason for this is something that someone mentioned that not muc...

Check out CMD FD-2000 3.5" disk drive for C64 Commodore 64 [ULTRA RARE] on eBay!
https://www.ebay.com.au/itm/29577192012 ... edia=EMAIL…login to view the rest of this post

Hi Gyro Gearloose and rmzalbar, Apologies for not responding sooner. Work commitments got the better of me. Very interesting discussion, I think you are both correct in fact. It's a pity my oscilloscope decided to pack it in. I would have liked to have double checked the results from the dead test c...

Hi rmzalbar, Interesting, does this links help any? http://mikenaberezny.com/hardware/c64-128/data20-z80-video-pak/ http://pages.total.net/~hrothgar/museum/Z80VideoPak/index.html http://sleepingelephant.com/denial/wiki/index.php?title=40_and_80_column_boards This site talks about pokes for a Vic 20 ...

Hi Gyro Gearloose,

Not a very appealing paint job, I say.

Hi RobertB,


Thanks for the information.


Looks interesting.

It's a shame c64os can't take advantage of the 80 columns in 128 mode.

Hi RobertB,

Looks very interesting.

Do you know if it can use 80 column mode of the C128?

That would be a really great thing.