User manual TYAN THUNDERBOLT

[. . . ] Tyan S1837 Thunderbolt Motherboard User's Manual Revision 1. 10 Copyright © Tyan Computer Corporation, 1999. No part of this manual may be reproduced or translated without prior written consent from Tyan Computer Corp. All registered and unregistered trademarks and company names contained in this manual are property of their respective companies including, but not limited to the following. AMIBIOS is a trademark of American Megatrend Incorporated. Windows is a trademark of Microsoft Corporation. [. . . ] Otherwise, you may choose one of the 46 drive types offered, or enter the parameters yourself (see Entering Drive Parameters on the next page). Consult the table below to see how to configure various drive types yourself. Type SC SI How to Configure Select Type. Select Not Inst alled on the drive parameter screen. The SCSI drivers provided by the SCSI manufacturer should allow you to configure the SCSI drive. Select Aut o to let AMIBIOS determine the parameters. Click on OK when AMIBIOS displays the drive parameters. Select On if the drive has a capacity greater than 540MB. Select On to allow block mode data transfers. Select On to allow 32- bit data transfers. It is best to select Aut o to allow AMIBIOS to determine the PIO mode. If you select a PIO mode that is not supported by the IDE drive, the drive will not work properly. If you are absolutely certain that you know the drive's PIO mode, select PIO mode 0- 4, as appropriate. Click on OK when AMIBIOS displays the drive parameters. (MFM drives are older drivers which use an encoding scheme that produces slower data access and less storage room. ) Select Type. Select the drive type that exactly matches your drive's parameters. If the drive parameters do not match the drive parameters listed for drive types 1- 46, select User and enter the correct hard disk drive parameters. IDE CD- ROM Standard MFM Non- Standard MFM LBA/Large Mode: These modes make it possible for the BIOS to take advantage of the additional space on drives which are larger than 504MB. This can be autodetected (when you select Auto for Type), or you can turn the modes On or Off yourself. Block Mode: If On, Block Mode automatically detects the optimal number of block read/writes per sector that the drive can support. http://www. tyan. com 58 Fast Programmed I/O Modes: Programmed Input/Output is a method of transmitting data between devices that uses the system's CPU as part of the data path. There are 6 modes - 5 with their own transmission speed and 1 auto mode. To use modes 3 and 4, you must be using an Enhanced IDE drive. PIO M ode Auto 0 1 2 3 4 3. 3 5 . 2 8. 3 11. 1 16. 6 D ata Trans fe r R ate (M Bps ) BIOS 32bit Transfer Mode: If On, allows for the transmission of 32 bits in parallel (i. e. If Off, only 16 bits will be transmitted in parallel. Entering Drive Parameters If you select User for the drive Type, you can enter the hard disk drive parameters yourself. [. . . ] SRAM Static RAM, unlike DRAM, does not need to be refreshed in order to prevent data loss. In Standby mode, the video and fixed disk drive shut down; all other devices operate normally. UltraDMA/33 is a fast version of the old DMA channel. Without UltraDMA your system cannot take advantage of the higher data transmission rates of the new UltraATA hard drives. [. . . ]