參數(shù)資料
型號(hào)： 82443ZX
廠商： INTEL CORP
元件分類： 存儲(chǔ)控制器/管理單元
英文描述： Intel㈢ 440ZX AGPset: Host Bridge/Controller
中文描述： DRAM CONTROLLER, PBGA492
封裝： BGA-492
文件頁數(shù)： 71/116頁
文件大?。?/td> 533K
代理商： 82443ZX
82443ZX Host Bridge Datasheet
3-47
Register Description
3.4.3
PCICMD1—PCI-to-PCI Command Register (Device 1)
Address Offset:
Default:
Access:
Size
04–05h
0000h
Read/Write
16 bits
Bit
Descriptions
15:10
Reserved.
9
Fast Back-to-Back:
Not Applicable. Hardwired to 0.
8
SERR# Enable (SERRE1).
When enabled the SERR# signal driver (common for PCI and AGP)
is enabled for error conditions that occur on AGP.If both SERRE and SERRE1 are reset to 0,
then SERR# is never driven by the 82443ZX. Also, if this bit is set and the Parity Error Response
Enable Bit (Dev 01h, Register 3Eh, Bit 0) is set, then the 82443ZX will report ADDRESS and
DATA parity errors on AGP.
1 = Enable.
0 = Disable.
7
Address/Data Stepping.
Not applicable. Hardwired to 0.
6
Parity Error Enable (PERRE1).
Hardwired to 0.
5
Reserved.
4
Memory Write and Invalidate Enable: Not applicable.
However, supported as a read/write bit
to avoid the problems with normal PCI-to-PCI Bridge configuration software.
3
Special Cycle Enable: Not applicable.
However, supported as a read/write bit to avoid the
problems with normal PCI-to-PCI Bridge configuration software.
2
Bus Master Enable (BME1): Not applicable.
However, supported as a read/write bit to avoid
the problems with normal PCI-to-PCI Bridge configuration software.
1
Memory Access Enable (MAE1): Not applicable.
However, supported as a read/write bit to
avoid the problems with normal PCI-to-PCI Bridge configuration software.
0
I/O Access Enable (IOAE1): Not applicable.
However, supported as a read/write bit to avoid
the problems with normal PCI-to-PCI Bridge configuration software.
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