User`s manual

DIGITAL-LOGIC AG MSMP5 / P3 SEN/SEV Manual V1.6A
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4.10 Memory
4.10.1 System Memory Map
The PENTIUM-100 CPU used as central processing unit on the MICROSPACE has a memory address
space which is defined by 32 address bits. Therefore, it can address 1 GByte of memory. The memory ad-
dress MAP is as follows:
CPU Pentium
Address: Size: Function / Comments:
000000 - 09FFFFh 640 KBytes Onboard DRAM for DOS applications
0A0000 - 0BFFFFh 128 KBytes CGA, EGA, LCD Video RAM 128kB
0C0000 - 0CBFFFh
0CC000 - 0CFFFFh
48 KBytes
16 KBytes
VGA BIOS selected by the hardware
BIOS extensions selected by the hardware
0D0000 - 0D4000h
0D4000 - 0D8000h
0D8000 - 0DFFFFh
16 KBytes
16 KBytes
32 KBytes
free for user
free for user
free for user
0E0000 - 0EFFFFh 64 KBytes Core BIOS selected by the PIIX4 chipset
0F0000 - 0FFFFFh 64 KBytes Core BIOS selected by the PIIX4 chipset
100000 - 1FFFFFh 1 MByte DRAM for extended onboard memory
200000 - FFFFFFh 14 MBytes DRAM for extended onboard memory
The possible system memory sizes (DRAM) are:
32 MB MSMP5SEN/SEV-xxx-32M 32 MB Memory
64 MB MSMP5SEN/SEV-xxx-64M 64 MB Memory
0 MB MSMP5 / 3P SEN/SEV-xxx-0M SODIMM 144pin