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Managing Peripheral Devices

8.5 Automatically Conﬁguring Devices for OpenVMS Alpha Systems

EISA_IO_PORT to obtain the length in the upper word of the returned longword

should stop examining the upper word. With ISA_CONFIG.DAT, the length was

returned; but with ISACFG, the length is always 8.

Example:

>>>isacfg -slot 3 -dev 0 -mk -enadev 1 -etyp 1 -handle AAA321 -irq0 10 -iobase0 2F8

This example assigned port 2F8 to the device.

MEM = (ee:f, gg:h, ...)

Use the ISACFG keywords -membasex to specify the memory base, and -memlenx

to specify the memory length. Use the same values for ee, gg etc. and f, h etc. as

you used for ISA_CONFIG.DAT. You can specify three memory regions using the

keywords membase0 through membase2 and memlen0 through memlen2.

Example:

>>>isacfg -slot 3 -dev 0 -mk -enadev 1 -etyp 1 -handle MYDEV -irq0 10 -membase0 80000 -memlen0 20

FLAGS = n

The FLAGS ﬁeld in ISA_CONFIG.DAT had 2 meaningful bits:

Bit 0 indicates the device being conﬁgured is a SCSI adapter.

Bit 1 indicates that no interrupt is required for the device.

Because it was never possible to use bit 0, it is not currently supported

in ﬁle-based autoconﬁguration. Bit 1 can be expressed with the ﬁle-based

autoconﬁguration FLAGS=NOVECTOR statement.

USER_PARAM = text

Use the PRIVATE_DATA keyword in ﬁle-based autoconﬁguration to represent this

value. If you used quotation marks with the USER_PARAM value, you must use

BEGIN_PRIVATE and END_PRIVATE to continue to pass the quotation marks to

the driver. For ISA devices, the PRIVATE_DATA values can be obtained the same

way as USER_PARAM (that is, by using the IOC$NODE_DATA routine with the

IOC$K_ISA_USER_PARAM keyword).

While using ISACFG, you must also be familiar with the following commands:

To return the conﬁguration to its initial state:

>>>isacfg -init

To save your changes:

>>>init

To delete an entry:

>>>isacfg -slot 1 -dev 0 -rm

To see all the devices currently conﬁgured:

>>>isacfg -all

To modify a device, use -mod:

>>>isacfg -slot 2 -dev 0 -mod (etc.)

8–20 Managing Peripheral Devices