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12
ASUS High-Speed CD-ROM Drive User’s Manual
III. SOFTWARE INSTALLATION
III.
S/W
INST
ALLA
TION
Windows
95/Windows
NT
Custom Setup
Choose the custom setup option to customize installation settings, such as the
target directory for the driver and installation files, and special settings.
To take advantage of the special settings to fully use your drive’s capability,
highlight Transfer Mode under the Custom Setup dialog box and then press
[Enter]. The different transfer mode options will be displayed:
PIO Mode or Programmed Input/Output Mode is the most common way computers
transfer data to and from the disk drive. PIO Mode 4, which is the mode installed,
differs only from the standard PIO transfer in how often the drive issues interrupts. In
PIO Mode 4, each interrupt indicates the drive is ready for 4 sectors of data (read) or
has completed the transfer of 4 sectors of data (write), compared with the one interrupt
required in standard PIO for each sector. This eliminates some of the system overhead
involved in a PIO transfer.
Multi-word DMA Mode or Multi-word Direct Memory Access Mode is used in
EISA-, VESA Local Bus-, and PCI-equipped systems. This mode is capable of very
fast transfer rates using Bus Mastering. The advantage of using the Bus Master DMA
is that it uses less CPU resources than PIO and therefore, it is useful in multitasking
environments, where the CPU can work on a different program while data is trans-
ferred to or from the hard disk drive, or in your case, your CD-ROM Drive.
Ultra DMA Mode, also known as Ultra-ATA (ATA is the “official” name for what the
computer industry calls IDE or Integrated Drive Electronics) or Ultra-DMA/33, is the
latest advancements to theATAspecifications. Ultra-DMA, among others, almost doubles
the maximum transfer speed of the ATA-3 standard and improves data integrity.
NOTE: These special settings require that you have a motherboard or install an
adapter that supports either or all of these modes.
5. Choose your preferred transfer mode and then press [Enter].
6. Highlight Start Installation and then press [Enter]. The installation utility will
update your AUTOEXEC.BAT and CONFIG.SYS files with the appropriate
settings and create the other options that you chose.
7. After the installation is completed, restart your computer.
Windows 95/Windows NT
If your CD-ROM Drive is already installed, Windows 95 or Windows NT will auto-
matically detect it and determine the appropriate settings for the drive and install or
load the correct driver.
OS/2 and Other Operating Systems
Your CD-ROM Drive supports the ATAPI drive interface. Your system should be able
to automatically detect your CD-ROM Drive and load the appropriate device driver.