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82443ZX Datasheet, PDF (33/116 Pages) Intel Corporation – Intel® 440ZX AGPset: Host Bridge/Controller | |||
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Register Description
Table 3-1. 82443ZX Register Map â Device 0 (Sheet 2 of 2)
Address
Offset
Register
Symbol
80â83h
84â8Fh
90h
91â92h
93h
94â97h
98â99h
9Ah
9Bâ9Fh
EAP
â
ERRCMD
ERRSTS
â
â
â
â
â
Register Name
Error Address Pointer Register
Reserved
Error Command Register
Error Status Register
Reserved
Intel Reserved
Intel Reserved
Intel Reserved
Reserved
A0âA3h ACAPID
AGP Capability Identifier
A4âA7h
A8âABh
ACâAFh
B0âB3h
B4h
B5âB7h
B8âBBh
BCh
BDh
BEâBFh
C0âC3h
C4âC7h
C8h
C9h
CAâCCh
CDâCFh
D0âD7h
D8âDFh
E0âE7h
E8âEFh
F0âF1h
F2âF7h
F8âFBh
FCâFFh
AGPSTAT
AGPCMD
â
AGPCTRL
APSIZE
â
ATTBASE
â
â
â
â
â
â
â
MBFS
â
BSPAD
DWTC
DRTC
BUFFC
â
â
â
AGP Status Register
AGP Command Register
Reserved
AGP Control Register)
Aperture Size Control Register
Reserved
Aperture Translation Table
Reserved
Reserved
Reserved
Intel Reserved
Intel Reserved
Intel Reserved
Intel Reserved
Memory Buffer Frequency Select
Reserved
BIOS Scratch Pad
Intel Reserved
DRAM Write Thermal Throttling Control
DRAM Read Thermal Throttling Control
Buffer Control Register
Intel Reserved
Intel Reserved
Intel Reserved
Default Value
Access
00000000h
00h
80h
0000h
00h
00006104h
0500h
00h
â
00100002h
00000000h
1F000203h
00000000h
00h
00000000h
00h
00h
00000000h
â
â
00h
00000000h
00000000h
18h
0Ch
000000h
00h
00...00h
000....000h
000....000h
000....000h
0000h
0000F800h
00000F20h
00000000h
RO, R/WC
â
R/W
R/WC, RO
R/W
â
â
â
â
RO
RO
RW
â
R/W
R/W
â
R/W
â
â
â
â
â
â
â
R/W
â
R/W
â
R/W/L
R/W/L
R/W/L
â
â
â
NOTES:
1. The âSâ symbol represents the strapping option.
2. Write operations must not be attempted to the Intel Reserved registers.
82443ZX Host Bridge Datasheet
3-9
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