🚀 go-pugleaf

> Ricky Beam notes (regarding a possible 17MB MM/1):
> >It doesn't really matter what the CPU can do, the hardware bus is set with
> >a 24bit address and 16 bit data paths.  16 Meg is the max for the system.

Chris Burke responds:

> With the 68340 (or even a 68306) you have a 24-bit bus, but the
> chip selects are based on a 32 bit address space. Thus, the
> largest single memory block is 16MB (due to the # of address lines
> on the bus), but you could address as many of these blocks as
> you have chip selects (e.g. by running a "flying wire" from the
> chip select pin to the memory).

/\/\ark he he he he he's:
>Yes true!  You could add on an MMU, rewrite the OSK kernel, and come up
>with a CoCo3, Level II clone! (big grin)
>
>Maybe there is a reason to keep all those GIME chips now!

Or you could just patch the boot routine to set up the
additional chip selects, ignore /\/\ark's nonsense about MMUs
and Kernel rewrites, and have a 32 - 64MB system. Even though
the bus is 24 bits, pointers are still 32 bits inside the
CPU and OSK - even WITHOUT an MMU.