8 ip memory size control, 9 ip interface address map – Kontron VM162 User Manual
Page 54
VM162/VM172
Chapter 2 Functional Description
Page 2- 32
© PEP Modular Computers
Juli 23, 1997
2.10.8 IP Memory Size Control
After a board reset the IP Memory Size is set to 8 MB linear address space by default. By setting Bit 3
of the IP Slot Control register (Memory size bit) the linear addressable memory space can be reduced
from 8 MB to 1 MB.
If 1 MB is selected the whole IP memory address space of 8 MB is available further on. The currently
used memory page (1-of-8 1MB pages) is determined by the memory page bits within the Slot Control
register (Bit 2-0).
Note: This feature is implemented for compatibility reasons to further IP Carrier boards with reduced
address space.
2.10.9 IP Interface Address Map
IPa:
IPb:
Note: Whether 1 or 8 MByte memory address space is selected depends on the memory size bit within
the IP slot control register. Depending on the memory size bit, the memory page bits are relevant or not.
Default is 8 MByte, not paged.
Base Address
(HEX)
Size
Port Width
Device
CE 00 08 00
128 Byte
D8-D16
IP Slot a IO Space
CE 00 08 80
128 Byte
D8-D16
IP Slot a ID Space
CE 00 09 01
128 Byte
D8
IP Slot a Interrupt Control register
CE 00 09 81
128 Byte
D8
IP Slot a Control ragister
D0 00 00 00
1 or 8 MB
D8-D16
IP Slot a Memory Space
Base Address
(HEX)
Size
Port Width
Device
CE 00 0A 00
128 Byte
D8-D16
IP Slot b IO Space
CE 00 0A 80
128 Byte
D8-D16
IP Slot b ID Space
CE 00 0B 01
128 Byte
D8
IP Slot b Interrupt Control register
CE 00 0B 81
128 Byte
D8
IP Slot b Control ragister
D0 80 00 00
1 or 8 MB
D8-D16
IP Slot b Memory Space