Re: Apple II VGA Video Generator Card Project

[aiiadict@gmail.com]

>Think about how long it will take an Apple to fill a 1.2MB

Too long.

Even if the 6502 is running at 50mhz, imagine the nightmare
of bankswitching out 64k chunks, then moving data from the
active memory into the video buffer...

>There is a reason that higher resolutions
>and color depths go with more powerful
>processors (and with more RAM).

more powerful CPU = faster speed + more address lines. (and
more linear addressable RAM)

We can put 16 megabytes of RAM in an apple II using
AE bankswitch method (1 byte register selects which
64k block to present to the CPU.  256*64k= 16384k = 16megs)
but what a pain it is to deal with this!

Rich