CHAPTER 6
Resources
Chapter Scope
This chapter describes system resources, such as memory mapping, register set
and default interrupt request assignments.
Memory Map
The table below shows the memory address area used by the VR11.
Table 18: Memory map
Address
Size
Used by
$00000 - $9FFFF
640 Kbytes
System RAM
$A0000 - $BFFFF
128 Kbytes
Video RAM (if enabled)
$C0000 - $DFFFF
128 Kbytes
Used by PCI ROMs:
VGA, SCSI, Ethernet
$E0000 - $FFFFF
128 Kbytes
System BIOS
$100000 - $3FFFFFFF
depends on
available DRAM
Extended RAM
$4000000 - $FFFBFFFF
depends on
available DRAM
Dynamically used by
PCI devices
$FEC00000 - $FFEFFFFF
System devices
$FFF00000 - $FFFFFFFF 1 MB Kbytes
System BIOS
Register Set
The following section provides an overview of the registers located in the I/O
address area of the VR11.
GE Intelligent Platforms – VR11, VP11 Hardware Reference Manual, Second Edition
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