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CHAPTER 1
Hardware
Hardware Overview
7
Figure 1-2
32-bit memory and detailed I/O map
$6000 0000
Expansion I/O space
(no DSACKs)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved (SCSI wrap)
Reserved (SCC wrap)
Reserved (VIA2 wrap)
Reserved (VIA1 wrap)
CPU GLU registers
SWIM
Sound
SCSI (normal mode)
SCSI (DMA with DRQ)
SCC
VIA2
$5900 0000
$5400 0000
$5010 0000
$500C 0000
$5008 0000
$5004 0000
$5003 0000
$5002 E000
$5002 C000
$5002 A000
$5002 8000
$5002 6000
$5002 4000
$5002 2000
$5002 0000
$5001 E000
$5001 C000
$5001 A000
$5001 8000
$5001 6000
$5001 4000
$5001 2000
$5001 0000
$5000 E000
$5000 C000
$5000 A000
$5000 8000
$5000 6000
$5000 4000
$5000 2000
$5000 0000
$6000 0000
$5000 0000
$4400 0000
$4000 0000
$0400 0000
$00E0 0000
$0000 0000
$FFFF FFFF
$FEF0 FFFF
$FE00 0000
I/O
Reserved
ROM
Expansion RAM
(bus error)
Illegal
RAM
14 MB maximum,
one continuous bank
Reserved
Slot E (external video)
Reserved
VIA1
SCSI (non DRQ)
Reserved
Slot C (internal video)
$FD00 0000
$FC00 0000