Memory Map; System Memory Map - HP Vectra Reference Manual

parity check (PCK) signal is generated. If PCK is enabled, a non-
maskable interrupt (NMl) occurs.
Memory Map
The 80286 can address 1 Mbyte of system memory in the real-
address mode, and 16 Mbytes in the protected mode. Certain
areas in memory have been specified or mapped for various
system functions. These areas are defined in table 2.1.
Table 2.1
System Memory Map
Address Description Function
000000- Processor ext. Real-address mode system RAM
09FFFF card memory
OAOOOO- Video RAM Reserved for video display card.
OBFFFF
0(0000- I/O Expansion Reserved for ROM modules on
ODFFFF ROM I/O cards.
OEOOOO- Processor ext. Reserved for ROM on processor
OEFFFF card
extension card
OFOOOO- Processor ext. Used for system firmware on
OFFFFF card ROM processor extension card.
----------End of Real-Address Mode Memory Boundary-----------
100000- I/O channel Expansion memory
FDFFFF memory
FEOOOO- Processor ext. Duplicate mapping of ROM on
FEFFFF card ROM
processor extension card.
FFOOOO- Processor ext. Duplicate mapping of firmware
card ROM on processor extension card.
12 Processor Board
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