Acer Aspire T320 Aspire T320 Service Guide - Page 36

OnChip IDE Device Press [Enter] to enter the sub-menu and the following screen appears: OnChip IDE Device Parameter IDE HDD Block Mode IDE DMA transfer access On-Chip Primary PCI IDE IDE Primary Master PIO IDE Primary Slave PIO IDE Primary Master UDMA IDE Primary Slave UDMA On-Chip Secondary PCI IDE Description Block mode is also called block transfer, multiple compounds or multiple sector read/ write. If your IDE hard drive supports block mode (most new drives do), select "Enabled" for automatic detection of the optimal number of block read/write per sector the drive can support. Enabled Disabled This option is used to set up the IDE transfer access -- with it set to Enabled, the IDE Transfer Access uses the DMA mode; with it set to Disabled, the IDE Transfer Access uses the PIO mode. Enabled Disabled Setting the option as Enabled will allow you Enabled to set the sub-menu function settings. Disabled Setting these items to "Auto" activates the HDD speed auto-detect function. The PIO mode specifies the data transfer rate of the HDD. For example, mode 0 data transfer rate is 3.3MB/s, mode 1 is 5.2 MB/s, mode 2 is 8.3MB/s, mode 3 is 11.1 MB/s and mode 4 is 16.6MB/s. If your hard disk performance becomes unstable, you may manually try the slower mode. These items allow you to set the Ultra DMA 33/66/100 mode supported by the hard disk drive connected to your primary and secondary IDE connectors. Auto Mode 0 Mode 1 Mode 2 Mode 3 Mode 4 Setting the option as Enabled will allow you Enabled to set the sub-menu function settings. Disabled Option Chapter 2 29