ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Bits 7:0 — Start Address 19:12
This register contains the least-significant byte of the address that specifies where in the memory
space the corresponding memory map will begin. Memory accesses that are equal or above this
address and equal or below the corresponding System Memory Map End Address will be mapped
into the memory space of the corresponding PC Card.
The most-significant four bits are located in the System Memory Map 0–4 Start Address High
register (see “System Memory Map 0–4 Start Address High” on page 65).
9.2
System Memory Map 0–4 Start Address High
Register Name: System Memory Map 0–4 Start Address High
Index: 11h, 19h, 21h, 29h, 31h
Register Per: socket
Register Compatibility Type: 365
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Window Data Compatibility
Scratchpad Bits
Start Address 23:20
RW:0000
Size
Bit
RW:0
RW:0
RW:00
There are five separate System Memory Map Start Address High registers, each with identical
fields. These registers are located at the following indexes:
Index System Memory Map Start Address High
11h
19h
21h
29h
31h
System Memory Map 0 Start Address High
System Memory Map 1 Start Address High
System Memory Map 2 Start Address High
System Memory Map 3 Start Address High
System Memory Map 4 Start Address High
Bits 3:0 — Start Address 23:20
This field contains the most-significant four bits of the Start Address. See the description of the
Start Address field associated with bits 7:0 of the System Memory Map 0–4 Start Address Low
register (see “System Memory Map 0–4 Start Address Low” on page 64).
Bit 7 — Window Data Size
0
1
8-bit data path to the card.
16-bit data path to the card.
This bit determines the data path size to the card.
Datasheet
65
INTEL [ INTEL ]
