IDE/EIDE/ATAPI Controller
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¬ 	Other Devices

This ISA and PCI bus device driver is designed to run on Intel-based computers running OPENSTEP for Mach Release 4.0.  It automatically detects and configures itself for PCI PC Tech RZ1000 adapters only. 

If you are installing OPENSTEP for Mach Release 4.0 for the first time, it is recommended that this EIDE driver be used even if you have IDE drives in your system. 

Supported Hardware: 

  *	The Enhanced IDE/ATAPI device driver is required for support of IDE drives, EIDE drives, and ATAPI devices. 
  *	The EIDE/ATAPI driver supports up to two IDE controllers, primary (ports 0x1f0 to 0x1f7, IRQ 14) and secondary (ports 0x170 to 0x177, IRQ 15).  Each IDE controller can support up to two IDE drives in a master/slave configuration. 
  *	The current driver includes support for the Intel GX/Professional computer. 
  *	IDE drives of all geometries are supported as long as the system BIOS reports correctly translated geometry and drive size.  Use of PIO Modes 3 and above require support of the IORDY line by the host IDE controller.
  *	Currently the only ATAPI devices supported are CD-ROMs.
  *	An ATAPI device can be connected in place of an IDE device as long as it is not a master in a master/slave configuration where slave is an IDE disk.  It is suggested that you connect your hard drives(s) to the primary controller and your CD-ROM(s) to the secondary controller if possible.
  *	The PC Tech RZ1000 PCI IDE interface is supported.  This allows the driver to do 32-bit data transfers and use faster timing modes if the disk supports them.

Configuration: 

1. 	Be sure that you are running Configure as root. 
2.	Click on the Other Devices icon at the top of Configure's "Summary of Devices" window.  In the Add Other Devices panel that opens, select the radio button labeled "Show Drivers for Detected Devices" if it is not already highlighted.  
3.	Configure will present the following device drivers.   
	  *	IDE Disk Controller 
	  *	EIDE and ATAPI Device Controller 
	  *	EIDE and ATAPI Device Controller for PC Tech RZ1000 
		        PCI 
	  *	Intel GX/Professional IDE Disk Controller 
	If you are replacing an older version of the IDE driver, replace it with a new driver of the same name.  Use the EIDE and ATAPI Device Controller  driver to replace the IDE Disk Controller for large disks (> 504MB) driver.  
4.	If you have two disk controllers, add another instance of the same driver and type in correct port address and IRQ values for it.
5.	Select the appropriate device driver from the list, and click Add. 
6. 	Click Done, then click Save, then quit Configure.

Known Problems: 

1.	Some ATAPI CD-ROMs will not work as anything but a master in a single drive configuration. 
2.	The secondary IDE controller is not available while installing OPENSTEP for Mach.  If you want to install OPENSTEP for Mach from an ATAPI CD-ROM, it must be connected to the primary IDE controller. 
3.	Because of the manner in which the current version of Configure manages its drivers, drivers for primary and secondary controllers must be of the same type (for example you can not use the EIDE/ATAPI driver for the primary controller and the IDE driver for the secondary controller).

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See also

·	"Add a Device" in Configure's on-line help.

·	See NeXTAnswer 1824_Installing_Drivers_Overview for general information on installing and configuring device drivers. 

·	See NeXTAnswer 1650_Large_IDE_Drive_Problems_with_NEXTSTEP_3.2 for background information on the original IDE driver. 

·	See NeXTAnswer 1933_EIDE_and_ATAPI_CDROM_Support_in_NEXTSTEP_3.3 for detailed information on this driver.