FANUC Robotics America V7865* - Manual (Page 43)

43
Memory and Port Maps
2
Memory and Port Maps
Memory Map - Tsi148 Based PCI-to-VME Bridge
The memory map for the V7865 is shown in Table 2-1. All systems share this same
memory map.
Table 2-1 V7865, Tsi148 Memory Address Map
MODE
MEMORY ADDRESS
RANGE
SIZE DESCRIPTION
PR
OT
E
C
T
E
D
MO
D
E $FFFF 0000 - $FFFF FFFF 64KB ROM BIOS Image
$C000 0000 - $FFFE FFFF 0.9GB Unused *
$0010 0000 - $BFFF FFFF 3GB Reserved for **
Onboard Extended Memory
(not filled on all systems)
REAL MODE
$E0000 - $FFFFF 128KB
Reserved for BIOS Area
$D8018 - $DFFFF 32KB
$D8016 - $D8017 2 bytes
$D8014 - $D8015 2 bytes
$D8010 - $D8013 2 bytes
$D800E - $D800F 2 bytes
$D8000 - $D800D 14 bytes
$C8000 - $D7FFF 64KB
$C0000 - $C7FFF 32KB
$A0000 - $BFFFF 128KB
$00000 - $9FFFF 640KB
* This space can be used to set up protected mode PCI-to-VME windows (also referred
to as PCI slave images). BIOS will also map onboard PCI based NVRAM, Timers and
Watchdog Timers in this area.
** This space can be allocated as shared memory (for example, between the BGA CPU
and VME Master). Note that if a PMC board is loaded, the expansion BIOS may be
placed in this area.