Make your own free website on Tripod.com
Up ] Docs Home ]

Bitfields for AMD-640 Shadow RAM Control Register 2

Back ] Next ]

Bit Description

7 - 6

segment DC00h-DFFFh shadow RAM control
00 - shadowing disabled
01 - write enabled
10 - read enabled
11 - both read and write enabled

5 - 4

segment D800h-DBFFh shadow RAM control
00 - shadowing disabled
01 - write enabled
10 - read enabled
11 - both read and write enabled

3 - 2

segment D400h-D7FFh shadow RAM control
00 - shadowing disabled
01 - write enabled
10 - read enabled
11 - both read and write enabled

1 - 0

segment D000h-D3FFh shadow RAM control
00 - shadowing disabled
01 - write enabled
10 - read enabled
11 - both read and write enabled

See Also:

#00983,#00992,#00994