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PCI Latency Patch
It was not VIA, but independent programmer George Breese of Networking Resources from New York who first came up with a patch for some of VIAs problems with the PCI bus. George often posts in the independent forums at VIAHardware, who also offer the patch as a direct download.
Please note: This is not an "official" patch supplied by VIA or any motherboard manufacturer. You may use it at your own risk. To date, we could not verify if there are any stability issues implied through longer burst cycles. However, we did not see any crashes or incompatibilities after applying this patch. But, taking its severe modifications into account, this is not completely impossible. You should read the files included in the download before going any further.
The patch deals with PCI Latency, among other things. This PCI Latency sets the number of cycles, that one PCI-Busmaster-Device can request the bus for exclusive use, before releasing it. This minimum amount of clock cycles is set, so PCI performance will not decrease too much, if burst transfers are interrupted too often. On the other hand, the latency timer also prevents one device from making exclusive use of the bus for too long. After the PCI latency during one burst has passed, every other device can request usage of the bus. The burst is then cancelled immediately.
hun eigen problemen niet eens op!
PCI Latency Patch
It was not VIA, but independent programmer George Breese of Networking Resources from New York who first came up with a patch for some of VIAs problems with the PCI bus. George often posts in the independent forums at VIAHardware, who also offer the patch as a direct download.
Please note: This is not an "official" patch supplied by VIA or any motherboard manufacturer. You may use it at your own risk. To date, we could not verify if there are any stability issues implied through longer burst cycles. However, we did not see any crashes or incompatibilities after applying this patch. But, taking its severe modifications into account, this is not completely impossible. You should read the files included in the download before going any further.
The patch deals with PCI Latency, among other things. This PCI Latency sets the number of cycles, that one PCI-Busmaster-Device can request the bus for exclusive use, before releasing it. This minimum amount of clock cycles is set, so PCI performance will not decrease too much, if burst transfers are interrupted too often. On the other hand, the latency timer also prevents one device from making exclusive use of the bus for too long. After the PCI latency during one burst has passed, every other device can request usage of the bus. The burst is then cancelled immediately.