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- Path: sparky!uunet!crdgw1!rpi!psinntp!psinntp!crynwr!nelson
- From: nelson@crynwr.com (Russell Nelson)
- Newsgroups: comp.os.linux
- Subject: 0.97 patchlevel 5 available
- Message-ID: <716352413snx@crynwr.com>
- Date: 14 Sep 92 11:59:23 GMT
- References: <1992Sep12.224241.5864@klaava.Helsinki.FI>
- Organization: Crynwr Software
- Lines: 16
-
- In article <1992Sep12.224241.5864@klaava.Helsinki.FI> torvalds@klaava.Helsinki.FI writes:
-
- - slightly edited <asm/io.h>: easily editable IO delay instructions.
- The default delay-instruction is now a 'inb' from port 0x80: this
- should be a bit safer than the outb.
-
- My packet drivers do a 'inb' from port 61h. This is the keyboard
- status port and so should be VERY safe.
-
- But you can easily change it to the "standard" two short jumps
- or whatever.
-
- Noooo! Short jumps result in no delay on fast caching machines. No,
- you really have to have the inb instruction. In fact, on slow chips
- like the 8390 and fast busses like EISA, you need *two* inb instructions.
-
- -russ <nelson@crynwr.com> I'm proud to be a humble Quaker!
- Crynwr Software Crynwr Software sells packet driver support.
- 11 Grant St. 315-268-1925 Voice
- Potsdam, NY 13676 315-268-9201 FAX
-