76
Memory Map
The module addresses memory using 24 address lines. This allows a maximum of 2
24
locations, or
16 Megabytes of memory.
The table below shows how memory in the first megabyte is allocated in the system.
Memory beyond the first megabyte can be accessed in real mode, by using EMS or a similar memory
manager. See your OS or programming language references for information on memory managers.
First Megabyte Memory Map
FFFFFH-
C0000H
ROM
256 KB BIOS in Flash EPROM, shadowed into DRAM dur-
ing runtime.
EFFFFH-
C0000H
Run time user memory space. Usually, memory between
C0000H and C7FFFH is used for the BIOS of add-on VGA
video cards.
BFFFFH-
A0000H
Normally used for video RAM as follows:
CGA
EGA/VGA
Monochrome
0B8000H to 0BFFFFH
0A0000H to 0AFFFFH
0B0000H to 0B7FFFH
9FFFFH-
00502H
DOS reserved memory area
00501H-
00400H
BIOS data area
003FFH-
00000H
Interrupt vector area
Содержание cpuModule CMC6686GX
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Страница 34: ...33 Connector Locations The figure and table below show all connectors and the SSD socket of the cpuModule...
Страница 35: ...34 CMC6686GX Connector Locations...
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Страница 104: ...103 Default Jumper Settings JP2 2 pin jumper Open no termination...
Страница 105: ...104 Solder Jumpers Solder jumpers are set at the factory and are rarely changed...
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Страница 117: ...116 Real Time Devices USA Inc P O Box 906 103 Innovation Blvd State College PA 16803 USA Our website www rtdusa com...