🚀 go-pugleaf

In article <90345.181101L98CC@CUNYVM.BITNET> L98CC@CUNYVM writes:
>In article <920@boing.UUCP>, dale@boing.UUCP (Dale Luck) says:
>>IMHO the benefits of a complete memory mapped frame buffer far outweigh
>>the costs giving up 1-2M of address space on the bus. The benefits of
>           *******************************

>1) I am willing to give up 2 meg space but not expansion ram space.
>3) I do not want to violate any hardware design rule set by CBM. ( i.e.
>  do not use reserved address space etc.. )

These two desires are at odds with one another.  The only memory mapped
hardware supported is autoconfiguring hardware.  There is 8.5 meg of space
open for this, 8 of which is contiguous and many folks use for expansion
RAM.  If you want a memory mapped frame buffer that takes up 2 meg for it's
mapped memory, that leaves 6 meg of space for other things, including 
expansion RAM.  There is no other memory available on a 68000 system.


-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
		"I can't drive 55"	-Sammy Hagar