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Bitfields for EISA Memory Information Flags

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Bit Description

0

writable (RAM rather than ROM)

1

cached

2

write-back cache rather than write-through

4 - 3

memory type
00 = system
01 = expantion
10 = virtual
11 = other

5

shared

6

reserved (0)

7

more entries follow

9 - 8

memory width
00 = byte
01 = word
10 = dword
11 = reserved

11 - 10

decoded address lines
00 = 20
01 = 24
10 = 32
11 = reserved

15 - 12

reserved (0)

See Also:

#01253