no peek or poke under xenix?

[terry]

In article <284 at dcdwest.UUCP>, phb at dcdwest.UUCP (Peter H. Berens) writes:
> We have a device driver for a memory mapped device that crashes the
> system when the board is not installed in the system and someone opens
> the device node.  We would like to be able to use peek or poke in the
> open routine to determine if the memory addresses the board responds
> to are present

	Use a setuid(geteuid()) root program (chmod 4755) to open /dev/mem
and lseek() to your offset location.  Then just read.

			:-)

PS: This is a nifty way to put one of thos damn clocks in the upper-right
hand corner of your screen... just write to the upper right-hand corner.


| Terry Lambert           UUCP: ...!decvax!utah-cs!century!terry              |
| @ Century Software       or : ...utah-cs!uplherc!sp7040!obie!wsccs!terry    |
| SLC, Utah                                                                   |
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