Date: Wed, 4 Dec 1996 19:16:35 -0600 (CST) From: mikebo@tellabs.com To: gjennejohn@frt.dec.com Cc: mikebo (Mike Borowiec), questions@freebsd.org Subject: Re: 2.1.5R: aha0: DMA beyond end of ISA ? Message-ID: <199612050116.TAA23726@sunc210.tellabs.com> In-Reply-To: <9612041747.AA10824@cssmuc.frt.dec.com> from "garyj@frt.dec.com" at Dec 4, 96 06:47:07 pm
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Gary, et al. wrote: > mikebo@tellabs.com writes: > [delete] > > Anyway, now every time I try to access the tape drives, I get: > > aha0: DMA beyond end of ISA: 0x19cc0a0 > > st1: bad request, must be between 0 and 0 > > tar: read error on /dev/rst1: Input/Output error > > > [delete] > > -------------------------------------------------------------------------- > > FreeBSD 2.1.5-RELEASE #0: Sat Nov 30 19:19:25 CST 1996 > > kroot@timesink.ttl.com:/usr/src/sys/compile/TIMESINK > > CPU: 132-MHz Pentium 735\\90 or 815\\100 (Pentium-class CPU) > > Origin = "GenuineIntel" Id = 0x52c Stepping=12 > > Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8> > > real memory = 67108864 (65536K bytes) > > avail memory = 63885312 (62388K bytes) > [delete] > > you need to enable bounce buffers, the ISA bus has only 24 bits and > can only address 16MB. You have 64 MB. Add > > options BOUNCE_BUFFERS > > to your kernel coniguration file and make a new kernel. > Darrrrr.... I should've known... It's just that I never had more than 16MB before. ;v) - Mike
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