Re: Integer + Applesoft BASIC ROMs

["Michael J. Mahon" <mjmahon@aol.com>]

Great Hierophant wrote:

<snip>

> Third, you could replace the ROM chips in the six sockets on the Apple
> II or II+ mainboard every time you wanted to use the other ROM.  Those
> sockets grip tightly and excessive insertions and removals will put
> unnecessary wear on the sockets and chip pins.  Something is bound to
> break.  Also, it can be expensive to find the ROMs in the wild and
> annoying to burn EPROMs.  Finally, its extremely annoying to do.

A more practical solution, if you plan to do it often, is to burn the
two ROM versions into the upper and lower halves of 4KB EPROMs,
and use a switch to change the state of the high-order address pin.

-michael

http://members.aol.com/mjmahon