Isa Plug And Play Mode Resources - AMD Am79C930 Preliminary Manual

The following table indicates the mapping of all I/O re-
sources that are accessible through the Am79C930
PCMCIA system interface. Note that some resources
Resource
Name
SIR0: General
Configuration Register
SIR1: Bank Switching
Select Register
SIR2: Local Memory
Address [7:0]
SIR3: Local Memory
Address [14:8]
SIR4: I/O Data
Port[7:0]
SIR5: I/O Data
Port[15:8]
SIR6: I/O Data
Port [23:16]
SIR7: I/O Data
Port [31:24]
TIR 0–7
TIR 8–15
TIR 16–23
TIR 24–31
UNDEFINED
TIR 0–31
UNDEFINED
*X = Don't Care

ISA Plug and Play Mode Resources

The Am79C930 device fully supports the ISA Plug
and Play specification, revision 1.0a, including the
Plug and Play ADDRESS Auto-configuration port,
WRITE_DATA Auto-configuration port, READ_DATA
Auto-configuration port, and 19 of the Plug and Play
P R E L I M I N A R Y
Am79C930 Device PCMCIA Mode I/O MAP
Resource PCMCIA
Mnemonic I/O Address
SIR0: GCR 00h
SIR1: BSS 01h
SIR2: LMAL 02h
SIR3: LMAU 03h
SIR4: DPLL 04h
SIR5: DPLM 05h
SIR6: DPUM 06h
SIR7: DPUU 07h
– 08h – 0Fh
– 08h – 0Fh
– 08h – 0Fh
– 08h – 0Fh
– 10h – 3Fh
– 08h – 27h
– 28h – 3Fh
Am79C930
are physically located within the BIU, while others are lo-
cated in the TAI and still others exist as external Flash
and SRAM:
Resource
SIR1[2:0] Size
XXX* 1 byte
XXX 1 byte
XXX 1 byte
XXX 1 byte
XXX 1 byte
XXX 1 byte
XXX 1 byte
XXX 1 byte
000 1 byte
each location
001 1 byte
each location
010 1 byte
each location
011 1 byte
each location
0XX NA
1X 1 byte
each location
1XX NA
configuration registers, as well as providing a mecha-
nism for access to Flash memory for reading the
Am79C930 device's Plug and Play Resource Data.
The following table indicates the range of I/O and mem-
ory addresses to which the Am79C930 device will re-
spond when operating in the ISA Plug and Play mode.
AMD
Physical Location
of Resource
BIU
BIU
BIU
BIU
Indirect access to
SRAM or Flash
memory
Indirect access to
SRAM or Flash
memory
Indirect access to
SRAM or Flash
memory
Indirect access to
SRAM or Flash
memory
TAI
TAI
TAI
TAI
UNDEFINED
TAI
UNDEFINED
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