.MT 4 1
.SA 1
.sp 6
.B
.ce 99
Processor / Cache
INDIGO - FIREFOX Differences
.ce 0
.R
.sp 5
.DS
Reference: Dave Fotland (157-3361)
           29 May 1984 phone conversation.
.DE
.sp 3
The  INDIGO  CPU is  implemented  with 16 byte  cache  lines,  while the
FIREFOX/CHEETAH  is  implemented  with 32 byte  cache  lines.  This will
require differences in the cache flush, etc.  routines.


.DS
		OLD INDIGO	INDIGO		FIREFOX

Cache		32K split	128K split	16K split
TLB		1K split	4K split	2K split
.DE

Differences software will see during power fail ?

Differences software will see during initialization ?

FIREFOX memory = architected, INDIGO = processor dependent ??????

CIO  differences ??  Count on there being  differences  even if we don't
know  what  they are now -  structure  code in a way  that  allows  less
painful   work-around   coding  during  the  inevitable   INDIGO/FIREFOX
"convergence phase".

PDC entry point timings - e.g.  time required to set the real time clock
-  will  differences  in  timings  result  in  differences  in  software
functionality ?

