AM79C930VC/W AMD [Advanced Micro Devices], AM79C930VC/W Datasheet - Page 65
![no-image](/images/no-image-200.jpg)
AM79C930VC/W
Manufacturer Part Number
AM79C930VC/W
Description
PCnet-Mobile Single-Chip Wireless LAN Media Access Controller
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79C930VCW.pdf
(161 pages)
- Current page: 65 of 161
- Download datasheet (678Kb)
address needs to be aligned to a 32K boundary in mem-
ory space. This alignment requirement should be in-
cluded in the Resource Data that is programmed into the
Flash device and read by the Plug and Play configura-
tion utility. These conditions must be satisfied, since the
Am79C930 device’s Bus Interface Unit will only use the
upper 9 bits of the ISA memory address to determine
when an address match has been achieved.
*MBA = ISA Plug and Play Memory Base Address
MBA+7C00h –
MBA+7FF0h –
MBA+0000h –
MBA+0400h –
MBA+0420h –
MBA+0440h –
ISA Address
MBA+7FEFh
MBA+7FFFh
MBA+041Fh
MBA+043Fh
MBA+047Fh
MBA+03FFh
in Memory
Am79C930 Device ISA Plug And Play Mode Memory Restricted Space
SIR1[5:3]
000
000
000
000
111
111
Restricted Space
1K–16 bytes
16 bytes
1 Kbytes
32 bytes
32 bytes
64 bytes
Size of
P R E L I M I N A R Y
Am79C930
Some of the Am79C930 device’s ISA Memory locations
have predefined uses and, therefore, are not freely
available to the device driver. The following table indi-
cates restricted space within ISA Memory map of the
Am79C930 device:
Physical Memory And
Description Of Reserved Use
SRAM Memory 0 0000h–0 03FFh
This space is reserved for the interrupt vector
table of the embedded 80188 core.
SRAM Memory 0 0400h–0 041Fh
This SRAM space is inaccessible to the
80188 embedded core, since the 80188
core maps the 32 TIR registers of the TAI
into this portion of 80188 memory space.
SRAM Memory 0 0420h–0 042Fh
This SRAM space is inaccessible to the
80188 embedded core, since the 80188
core maps the MIR registers of the BIU
(PIR, PDLC and PUCT) and XCE space into
this portion of 80188 memory space.
SRAM Memory 0 0440h–0 047Fh
This SRAM space is reserved for future use
and may be decoded for non-SRAM purposes
in the future.
Flash Memory 1 FC00h–1 FFEFh
These bytes of the Flash memory also map into
the ISA Plug and Play Resource Data space.
Therefore, this space can not be used for
non-Resource Data purposes.
Flash Memory 1 FFF0h–1 FFFFh
These 16 bytes of Flash memory space are
reserved because they are the location of
the embedded 80188 core’s instruction
pointer following a Am79C930 device reset
operation. These 16 bytes must contain the
first 80188 instructions.
AMD
65
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