kumem.4

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)kUmem.4	8.1	9/11/90
.\" SCCSID: @(#)kUmem.4	8.1	9/11/90
.TH kUmem 4 VAX
.SH Name
kUmem \- UNIBUS/Q-bus virtual memory interface
.SH Description
.NXR "kUmem special character file"
.NXR "UNIBUS virtual memory image"
.NXR "Q-bus virtual memory image"
The
.PN kUmem
character special file is an image of the UNIBUS/Q-bus
virtual memory of the computer.
It can be used, for example, to examine or patch virtual addresses mapped
to UNIBUS physical space.
.PP
Byte addresses in
.PN kUmem
are interpreted as virtual memory addresses.
References to nonexistent locations cause errors to be returned.
.SH Restrictions
The
.PN kUmem
memory file is accessed one byte
at a time.
.SH Files
.PN /dev/kUmem
.SH See Also
MAKEDEV(8)