Memory [1] low, Memory [1] high, Memory [1 – Avago Technologies LSI53C1020 User Manual
Page 89: High, Register: 0x1c–0x1f
PCI Configuration Space Register Descriptions
4-11
Version 2.4
Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.
Register: 0x1C–0x1F
Memory [1] Low
Read/Write
The
register and the
register map the
RAM into Memory Space [1]. This register contains the lower 32 bits of
the Memory Space [1] base address. Hardware programs bits [12:0] to
0b0000000000100, which indicates that the Memory Space [1] base
address is 64 bits wide and that the memory data is not prefetchable.
The LSI53C1020 requires 64 Kbytes of memory for Memory Space [1].
Memory [1] Low
[31:0]
This field contains the Memory [1] Low address.
Register: 0x20–0x23
Memory [1] High
Read/Write
The
register and the
register map the
RAM into Memory Space [1]. This register contains the upper 32 bits of
the Memory Space [1] base address. The LSI53C1020 requires
64 Kbytes of memory for Memory Space [1].
Memory [1] High
[31:0]
This field contains the Memory [1] High address.
31
0
Memory [1] Low
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
31
0
Memory [1] High
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0