Apple II

Does anyone have accurate measurements of the mounting hole pattern for the Apple II/II+ keyboard? I am finalizing a keyboard design and want to make sure it fits properly in an Apple II.Many thanks,Dave

Hi All, I am not able to launch Dos 3.3 on my IIgs.  I get an error message that says,

"No startup file, press any key." When I just try to run a Dos 3.3 program like "One on One"

it says "An application can not be found for this document." 

Any directon on how to proceed would be much appreciated.

Thanks,

Brad Hansen

So I just got a new haul of IIgs loot, and put my ROM3 board in a case.

I pulled the 8Mb RAMGS out of my ROM1 box and installed it in the ROM3.  System became very unstable.  Once had a "bad input queue" error (I don't remember the numerical code off the top of my head, but that's what google said it was), but the rest of the time it was screen garbage and lockups like you expect from bad memory.

I see that some of the IIgs emulators have a 14Mb option, and one of the ROM switcher cards has an option for a ROM that supports 14Mb of RAM.

However, my understanding is that, due to the way the address decoding circuitry is designed, the unmodified GS hardware can really only address 8Mb.

Has anyone done any hardware hacks that allow proper decoding of the full address space and 14 Mb of actual physical RAM, with the patched ROM?  I would assume that it would have to be some kind of CPU socket plugin thing.....