Date: Thu, 2 Mar 1995 14:55:16 -0800 (PST) From: Poul-Henning Kamp <phk@ref.tfs.com> To: rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes) Cc: davidg@Root.COM, wpaul@freefall.cdrom.com, CVS-commiters@freefall.cdrom.com, cvs-sys@freefall.cdrom.com Subject: Re: cvs commit: src/sys/i386/boot/biosboot probe_keyboard.c Message-ID: <199503022255.OAA08548@ref.tfs.com> In-Reply-To: <199503022239.OAA15284@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Mar 2, 95 02:39:45 pm
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> > > > Modified: sys/i386/boot/biosboot probe_keyboard.c > > > > Log: > > > > Some people have complained that they were unable to boot the > > > > Feb. 10th snapshot. The keyboard probe in the bootblock seems to > > > > have been singled out as the cause of these problems, so I've beefed it > > > > up alittle. This pushes us right up to the edge of the size limit: > > > > the second stage boot is now 7152 bytes in size, just 8 bytes under > > > > the wire. On the other hand, the new probe now does almost exactly > > > > what syscons does, so hopefully this will do the trick. It seems > > > > to work properly on my hardware, but then so did the old probe. > > > > > > This is going to be a problem...there are some (other) bugs that I need to > > > fix that will require some bytes themselves. > > > > There is plenty of bytes to spare, if we get all the "date16 ; mov this,that" > > turned into real 16 bit instrs. Any takers ? > > There is no such thing as ``real 16 bit instrs''. You have 8 bit inst and > you have current mode inst, which are either 16bit or 32bit depending on > the CS GDT entry size bit. You have to use data16; mov this, that when > dealing with 16 bit values running in a 32 bit code segment. You disasseble our boot1 and you will see what I mean... -- Poul-Henning Kamp <phk@login.dknet.dk> TRW Financial Systems, Inc. I am Pentium Of Borg. Division is Futile. You WILL be approximated.
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