SBC8161 Socket 370 All-in-One CPU Card Series User
s Manual
Ultra DMA/66 Reference
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1. Can I run UDMA/66 on a 40 pin 40 conductor cable?
No, the UDMA/66 technology is defined such that the PC and the HDD
can both detect the presence of the 80-conductor cable. UDMA/66 will not
be enabled unless the 80-conductor cable is present.
2. I have an UDMA/33 system today. How can I support
UDMA/66?
An existing system can be upgraded by purchasing a PCI-EIDE controller
that supports UDMA/66.
3. Do Microsoft Operating Systems support UDMA?
Windows releases indicate that they all support DMA transfers. Windows
does not know the difference between Ultra ATA/33 or Ultra ATA/66.
UDMA data transfer rate is determined by your HDD, your controller and
the BIOS. This applies for all the following Windows operating systems:
- Windows 2000
- Windows 98
- Windows NT Service Pack 3
- Windows 95 OEM Service Release 2
4. I don't have a system that supports Ultra ATA/66, can I run
the Ultra ATA/66 HDD in it?
Yes, the HDD will not run in UDMA/66 mode but instead is a slower
compatible mode such as Ultra ATA/33, DMA Mode 2 (16.6 MB/s) or PIO
Mode 4 (16.6MB/s)
5. Can I mix Ultra ATA/33 and Ultra ATA/66 drives on the same
cable?
Yes, a legacy ATA (IDE) specification drive can coexist with an Ultra
ATA/66 drive. However, for the Ultra ATA/66 device to attain Ultra DMA 4
mode, an Ultra ATA/66 capable cable is required.
Содержание SBC8161
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