memory mapped video device drivers

Ronnie Hughes ronh at sunriv.UUCP
Wed Dec 12 02:54:04 AEST 1990


In article <1990Dec10.193631.4019 at sj.ate.slb.com> stefano at sj.ate.slb.com (Stefano Concina) writes:
>- how do you map physical memory to user space ? I tried read/writes to 

Try the kernel routine vidumapinit(phys, size), where phys is the
actual physical address of the card and size is in bytes.  This
returns a user virtual address which can be passed back to the 
user process.  Hope this helps.

Ronnie		ronh at sunriver.com  or uunet!sunriv!ronh



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