Specifications

EPC-3305 Hardware Reference
18
Transfer Mode Selects the mode that the System BIOS uses to access the
hard disk.
You can select one of these:
• Standard (default)
• Fast PIO 1
• Fast PIO 2
• Fast PIO 3
• Fast PIO 4
• FPIO 3 / DMA 1
• FPIO 4 / DMA 2
Older hard disks only support “Standard”. Newer hard
disks adhering to “Fast ATA” or “Enhanced IDE”
specifications may support the fast programmed I/O or
DMA modes. Note that autotyping may change this value
depending on the transfer modes that the hard disk
reports it supports.
The fast DMA modes take full advantage of the onboard
bus mastering hard disk controller and should yield the
highest performance when used in conjunction with
multitasking operating systems that support it.
Ultra DMA Mode Selects the Ultra DMA Mode that the System BIOS uses
to access the hard disk.
You can select one of these:
• Mode 2 (default)
• Mode 1
• Mode 0
• Disabled
Note: Autotyping derives this value from information
reported by the drive.
Field Description