BIOS Quick Reference • CC5-RAVE
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EKF Elektronik GmbH * Philipp-Reis-Str. 4 * D-59065 HAMM (Germany)
Tel. +49 (0)2381/6890-0 * Fax. +49 (0)2381/6890-90 * E-Mail [email protected] * Internet http://www.ekf.de
The UDMA capability is passed to the operating system. The actual data transfer mode however
depends on the drives built in UDMA features and the treatment of the operating system (e.g.
DOS will not be able to activate the UDMA mode). The BIOS itself does not use UDMA during
POST.
Master/Slave Timing Mode
Individually selectable for master and slave, this 3-bit (0-7) parameter controls various access
modes to the drives. Detailed information can be derived from the Intel IDE Programmer’s
Reference Manual at
http://developer.intel.com/design/chipsets/manuals/298236.htm
.
IORDY Sampling Point
Individually selectable for master and slave, this parameter controls a delay time for the drives
IORDY signal (3-5 clock cycles). Detailed information see above.
Recovery Time
Individually selectable for master and slave, this parameter controls delays to recover from drive
access (1-4 clock cycles). Detailed information see above.
Secondary IDE Port
This port is reserved for the ATA CompactFlash drive on the CC5-RAVE. The options are identical
to the primary IDE port but the UDMA parameter. No IDE slave device is attached.
