2.8
Memory Map
The table below shows the memory address area used by the VP7.
Start
address
(in hexadecimal)
used by
Size
0000 0000
DRAM
640 Kbytes
000A 0000
Video RAM
128 Kbytes
000C 0000
PCI BIOS ROMs
(Video, SCSI, Ethernet etc.)
128 Kbytes
000E 0000
System BIOS
128 Kbytes
0010 0000
Extended Memory
depending on DRAM size
8000 0000
PCI devices
FFFF 8000
BIOS Extension
256 Kbytes
FFFF C000
System BIOS
256 Kbytes
2.9
Register Set
The following chapter provides an overview of the registers located in the I/O address area of the VP7.
The address location of PCI devices such as SCSI or Ethernet are not described in the following
tables because the System BIOS automatically configures (PnP, Plug and Play) each PCI device
to avoid address conflicts. Many device drivers show the actual address locations after
installation and loading.
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