info-mac@uw-beaver (12/31/84)
From: <bang!crash!bwebster@Nosc>
Got a call this morning from Gary Landis at MicroGraphic Images.
It seems his firm is developing a hardware product that needs to use a
chunk of the 68000's address space for external decoding. The problem is
that (according to him--I know nothing about this) the Mac OS and ROM appears
to make some use of just about every 1MB chunk of the address space. His
question: where can he find a chunk (1MB or so) of address space that won't
cause problems with the Mac OS/ROM? If you know, please reply to me or
give him a call directly (213-374-5832). I know he'll appreciate it.
Speaking of which...he told me that his firm has just annouced a
1 MB upgrade for the Mac (called the "MegaMac"). You do have the problem
of having the video screen sitting right in the middle of RAM (at $7A700),
but (he said) you can have a 512K RAMdisk *and* 512K of working space . . .
which should make Lotus' Ja\zz and similar software scream along. He's
sending me info on it; I'll post something here once I get it.
..bruce..
bang!crash!bwebster@nosc
{ihnp4 | sdcsvax!bang}!crash!bwebster