Path: utzoo!attcan!uunet!mcsun!hp4nl!phigate!prle!prles2!finch!hooft
From: hooft@finch.prl.philips.nl (Peter van Hooft)
Newsgroups: comp.sys.hp
Subject: Re: GPIO interface
Keywords: GPIO, device driver
Message-ID: <787@prles2.UUCP>
Date: 24 Nov 89 07:36:05 GMT
References: <326@eutnv1.UUCP>
Sender: nobody@prles2.UUCP
Lines: 23

camiel@eutnv1.UUCP (Camiel Severijns) writes:
[ wants to know about accessing device registers ]

See iomap(7). 
As the address mentioned in iomap(7), use 60H+(your selectcode).

Example: 
  vme card, selectcode == 0x18, the card has an address space of 128kB:
  mknod vme_mapped c 10 0x007802

If you need more of a working example, email me.

You can find info about the registers of the GPIO card in the manual.
(surprise :-)). 

About this manual:
`HP 98622A GPIO Interface Installation'
Part No. 98622-90000

if (! this_helps()) 
 email_me();

peter