pc/fns.h		1991/0614		Created.
		1991/0702
		1991/0703
		1991/0704
		1991/0705
		1991/0706
		1991/0709
		1991/0710
		1991/0711
		1991/0712
		1991/0716
		1991/0717
		1991/0718
		1991/0719
		1991/0723
		1991/0731
		1991/0802
		1991/0803
		1991/0808
		1991/0809
		1991/0827
		1991/0905
		1991/0906
		1991/0913
		1991/1001
		1991/1007
		1991/1029
		1991/1113
		1991/1210
		1992/0101
		1992/0122
		1992/0222
		1992/0323
		1992/0409
		1992/0429
		1992/0604
		1992/0609
		1992/0625
		1992/0806
		1992/0825		Add mouseaccelerate.
		1992/0904		Add mouseserial, mouseps2, mouseres, mousespeed.
		1992/0918		Remove ksetpcinfo.
		1992/0922		Add ins, insl, outs, outsl.
		1992/0923		Remove heada20, headreset, pmu*.
		1992/0929		Add isamem, pcicreset.
		1992/1006		Add nvramread.
		1992/1015		Add screenupdate.
		1992/1017		Remove mouse*, add mousectl.
		1992/1030		Remove screenupdate.
		1992/1107		Add l0update.
		1992/1110		Add l1update.
		1992/1111		Add l2update.
		1992/1117		Change l*update to take long count.
		1992/1211		Add insb, outsb.
		1993/0116		Add mmunewpage.
		1993/0120		Add dsegfree, dsegalloc.
		1993/0210		Remove dsegfree, dsegalloc.
		1993/0402		Add bbinit.
		1993/0915		Import from Plan 9 to Brazil.
		1993/1113		Add prflush, getstatus.
		1993/1116		Add getstatus, remove screenputc.
		1993/1124		Remove clock, fault386, uart*. Change setvec to add void* for handler. Add syscall.
		1993/1214		Add affinity — always stay on 0.
		1993/1215		Change affinity — stay on current machine.
		1993/1221		Add NS16552m3mouse, NS16552mouse.
		1994/0128		Add hardclock.
		1994/0219		Add uartclock.
		1994/0302		Add printcpufreq, x86.
		1994/0322		Add iprint
		1994/0520		Remove l*update.
		1994/0602		Add network prototypes.
		1994/0622		Add getcr3.
		1994/0715		Add uartpoll.
		1994/0716		Add aamloop.
		1994/0725		Add #define balance.
		1994/0728		Remove affinity and balance.
		1994/0817		Add vgasavecrash, vgarestorecrash.
		1994/0829		Add freset.
		1994/0902		Remove NS16552*mouse, lowercase NS16552special.
		1994/0908		Add SCSI prototypes.
		1994/0913		Remove SCSI prototypes except addscsicard.
		1994/1012		Add ns16552install.
		1994/1031		Add x86cpuid.
		1994/1114		Add xchgw.
		1994/1210		Add getisa, putisa; remove isamem.
		1995/0105		Change getcallerpc. (Bug fix or change?). Add dcflush.
		1995/0111		Change pcmspecial to return char*.
		1995/0222		Add cistrcmp, change pcmspecial.
		1995/0225		Remove pcmio, pcmread, pcmwrite. Add pcmmap, pcmunmap.
		1995/0328		Rename addscsicard to addscsilink, add scsibt*.
		1995/0406		Add getspace.
		1995/0502		Add dmadone.
		1995/0514		Add ifgetsr.
		1995/0517		Add pcicfgr, pcimatch. Remove pcicreset.
		1995/0527		Remove x86 (replaced by x86cpuid).
		1995/0721		Change pcicfgr, pcimatch; add pcicfgw.
		1996/0607		Remove scsibt*.
		1997/0220		Add coherence.
		1997/0327		SMP change XXX
		1997/0329		Change meminit, remove memscan, add umbrmalloc.
		1997/0331		Remove umbrmalloc, add umbrwmalloc, umbrwfree.
		1997/0404		Change dmainit.
		1997/0413		Remove addclock0link.
		1997/0415		Remove getisa, putisa. Add links.
		1997/0930		Remove kmapperm.
		1997/1011		Add mmukmap*, pcibarsize, pcihinv.
		1997/1101		Change mmuwalk prototype, change screenputs to pointer.
		1998/0108		Format edit.
		1998/0401		Change rdmsr, wrmsr to use vlong instead of ulong pair.
		1998/0710		Add i8253read.
		1998/0910		Comment out addscsilink, change i8259enable, add pcimatchtbdf and trapenable.
		1998/1015		Remove pcibarsize.
		1999/0131		Change i8253init.
		1999/0205		Add TK2MS.
		1999/0314		Add pcisetbme.
		1999/0327		Add idlehands.
		1999/0403		Change dmainit.
		1999/0501		Change getcallerpc. Note callers have to change! (Bug fixes?)
		1999/0529		Add readintrts.
		1999/0701		Remove readintrts.
		1999/0713		Add iofree, ioinit, ioalloc.
		1999/0714		Change ioalloc, iofree. Add iounused. Remove getcallerpc (now in lib.h).
		1999/0819		Add name to intrenable, trapenable. Add irqallocread.
		2000/0605		Add pcmcistuple.
		2000/0621		Add loopbackintr.
		2000/0622		Change loopbackintr.
		2000/0623		Remove loopbackintr, add checkcycintr, cycintr*.
		2000/0627		Add clockintrsched, cycintrnext.
		2000/0701		Format edit. Add havecycintr.
		2000/1018		Add addarchfile, remove irqallocread.
		2000/1021		Change pcmcistuple.
		2000/1106		Add userureg macro.
		2000/1118		Add pcmcisread.
		2000/1221		Add doze, halt, change idlehands to use doze.
		2001/0123		Remove doze, make idlehands a function.
		2001/0127		Add comments.
		2001/0527		Remove halt, ns16552*. Add kmapinval. Remove comment.
		2001/0622		Add cbinit, ioreserve, pciscan, pcibarsize.
		2001/0626		Remove cbinit.
		2001/0712		Add halt, i8250console.
		2001/0809		Remove iprint (moved to port?).
		2001/0905		Format edit. Add i8259vecno, i8259disable, intrdisable, iprint, pciclrbme, _pcmspecial*.
		2001/0922		Add i8250alloc.
		2001/0928		Add pciipin.
		2001/1130		Add rdtsc.
		2002/0109		Delete addconf, add mach0init, change meminit.
		2002/0404		Add apicclkenable.
		2002/0405		Rename *cycintr* to *timer*. Add guesscpuhz, change i8253init.
		2002/0407		Add i8259isr.
		2002/0410		Remove *timer* (moved to port?). Add i8253timerset, lapicclock, lapictimerset.
		2002/0411		Add kbdenable.
		2002/0413		Remove clockintrsched. Add sfence, wbinvd.
		2002/0415		Change rdtsc to take uvlong. Add syncclock.
		2002/0418		Add tscticks.
		2002/0503		Add i8250mouse.
		2002/0506		Add i8042auxcmds.
		2002/0609		Add i8253link.
		2002/0703		Remove commented-out addscsilink. Format edits.
		2002/0710		Remove TK2MS.