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AmigaOS 4.0 - About OS4 - Preferences

UBOOT - IDE Ports Onboard VIA686 Preferences Editor

The U-Boot Prefs "IDE Ports Menu" is accessed from the third tab and gives access to all of the IDE related parameters. Other parameters can be accessed by clicking on the other tabs at the top of the display, namely Boot, Hardware, or OS4 Specific.

The IDE Ports has another set of tabs partway down the display for the various IDE controllers. It defaults to the first tab (the default tab when opened) which gives access to all of the Onboard VIA686 related parameters. Parameters for the other controllers can be accessed by clicking on the other tabs, namely SIL Parallel ATA (680), SIL Serial ATA (3112/3512), and SIL 4-ports Serial ATA (3114).

AmigaOS U-Boot Preferences Menu

Global IDE Preferences
Options available are:
  • ATAPI command timeout - equivalent to ide_cd_timeout in UBoot Environment Variables and specifies the timeout period in seconds for ATAPI commands. Does not appear to working at this time.
  • Reset timeout - equivalent to ? in UBoot Environment Variables and specifies the reset timeout period in seconds for ATAPI commands. Does not appear to working at this time.
  • Reset unit when rescanning - equivalent to ide_doreset in UBoot Environment Variables and specifies that the IDE devices should be reset to check for media changes when rescanning. Does not appear to working at this time.
  • Swap primary and secondary bus - equivalent to ide_swap in UBoot Environment Variables and specifies that the Primary and Secondary bus should be swapped. Does not appear to working at this time.
Onboard VIA686 Options available are:
  • Active bus when scanning - equivalent to a1ide_maxbus in UBoot Environment Variables and specifies buses are active. Options are Disabled, Primary and Both. If the onboard VIA686B was being used it would normally be Primary or Both, otherwise it would be Disabled.
  • Scan timeout - equivalent to a1ide_timeout in UBoot Environment Variables and specifies the scan timeout period in seconds for the VIA686B devices.
  Primary bus
Unit 0
  • Unit type - equivalent to the first character of a1ide_conf in UBoot Environment Variables and specifies the type of device connected as unit 0. Options are Disabled, Harddisk, DVD/CD, and Automatic. Default is Automatic.
  • Transfer Mode - equivalent to the first character of a1ide_xfer in UBoot Environment Variables and specifies the transfer mode to be used for the device connected as unit 0. Options are Automatic, UDMA 0, UDMA 1, UDMA 2, UDMA 3, UDMA 4, UDMA 5 or Best PIO. Default is Best PIO.
  • Use IRQ - equivalent to the first character of a1ide_irq in UBoot Environment Variables and specifies whether the device connected as unit 0 should use IRQ's. Normally ticked.
Unit 1
  • Unit type - equivalent to the second character of a1ide_conf in UBoot Environment Variables and specifies the type of device connected as unit 1. Options are Disabled, Harddisk, DVD/CD, and Automatic. Default is Automatic.
  • Transfer Mode - equivalent to the second character of a1ide_xfer in UBoot Environment Variables and specifies the transfer mode to be used for the device connected as unit 1. Options are Automatic, UDMA 0, UDMA 1, UDMA 2, UDMA 3, UDMA 4, UDMA 5 or Best PIO. Default is Best PIO.
  • Use IRQ - equivalent to the second character of a1ide_irq in UBoot Environment Variables and specifies whether the device connected as unit 1 should use IRQ's. Normally ticked.
Secondary bus
Unit 2
  • Unit type - equivalent to the third character of a1ide_conf in UBoot Environment Variables and specifies the type of device connected as unit 2. Options are Disabled, Harddisk, DVD/CD, and Automatic. Default is Automatic.
  • Transfer Mode - equivalent to the third character of a1ide_xfer in UBoot Environment Variables and specifies the transfer mode to be used for the device connected as unit 2. Options are Automatic, UDMA 0, UDMA 1, UDMA 2, UDMA 3, UDMA 4, UDMA 5 or Best PIO. Default is Best PIO.
  • Use IRQ - equivalent to the third character of a1ide_irq in UBoot Environment Variables and specifies whether the device connected as unit 2 should use IRQ's. Normally ticked.
Unit 3
  • Unit type - equivalent to the fourth character of a1ide_conf in UBoot Environment Variables and specifies the type of device connected as unit 3. Options are Disabled, Harddisk, DVD/CD, and Automatic. Default is Automatic.
  • Transfer Mode - equivalent to the fourth character of a1ide_xfer in UBoot Environment Variables and specifies the transfer mode to be used for the device connected as unit 3. Options are Automatic, UDMA 0, UDMA 1, UDMA 2, UDMA 3, UDMA 4, UDMA 5 or Best PIO. Default is Best PIO.
  • Use IRQ - equivalent to the fourth character of a1ide_irq in UBoot Environment Variables and specifies whether the device connected as unit 3 should use IRQ's. Normally ticked.
Action Buttons
When you make changes you can choose to 'Save' them permanently, 'Revert' to the previously saved values, or you can 'Cancel' and lose all changes. (The Revert option does not appear to be working properly at this time.)

Disclaimer: Amiga Auckland have prepared the above information for the use of its members based on our experiences and as such is subject to revision at any time. Amiga Auckland cannot guarantee any of the information and cannot be held accountable for any issues that may result from using it.


Copyright 2006 Amiga Auckland Inc. All rights reserved.
Revised: February 9, 2006.