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Xref: sserve comp.periphs.scsi:6977 comp.unix.bsd:4878 Newsgroups: comp.periphs.scsi,comp.unix.bsd Path: sserve!manuel!munnari.oz.au!uunet!elroy.jpl.nasa.gov!ames!data.nas.nasa.gov!mustang.mst6.lanl.gov!nntp-server.caltech.edu!morphy From: morphy@cco.caltech.edu (Jones Maxime Murphy) Subject: Re: [386BSD] doesn't find harddisk: 1542B vs. 1742A (standard mode) ? Message-ID: <1992Sep10.195442.22178@cco.caltech.edu> Keywords: 386BSD Adaptec 1542B 1742A Sender: news@cco.caltech.edu Nntp-Posting-Host: alumni Organization: California Institute of Technology, Pasadena References: <1992Sep10.062637.11604@autelca.ascom.ch> Date: Thu, 10 Sep 1992 19:54:42 GMT Lines: 61 nbladt@autelca.ascom.ch (Norbert Bladt) writes: >Hello SCSI and 386BSD experts ! >Now, my new system arrived this week (finally, but that's another story) >which is a 486/33 EISA system with the Adaptec 1742A host adapter running >in standard mode. I've got a similar setup(486/33 & AHA 1742A), but I was running mine in enhanced mode. >I simply disconnected the harddisk from the ISA system (1542B) and connected >it to the EISA (1742A) system. I expected, that no problems would occur >in booting 386BSD on the EISA system after doing this, because I booted >the dist.fs floppy before and it did find the 1742A. >However, 386BSD doesn't find the harddisk. Same thing here. Funny, though it finds the floppies, which are hooked to the *same* controller. Weird. Does enhanced mode only affect dealings with the hard drive?? >If I boot from floppy the screen output looks like (just the relevant parts): >... >AHA 1740 BIOS [ this is from memory ! >target 1 on C: (80h this, too, the rest is NOT ] >... >as0 at 0x330 irq 11 drq 5 on isa [ is "isa" printed always ? ] >... >as0b: controller error 0x12 reading fsbn 0 [ I guess, it tried to read > FileSystem Block No. 0 ? ] >scsi sense: 0 .... 0 >... ># [ system prompt appears ] Mine just deosn't see the hard drive at all. No controller error, no nada. >If I type install, the famous question about the TV is asked ... >So, no harddisk is found by 386BSD ! Yeah, that TV question is a gas. NOT! >The Adaptec manual which came with the 1742A says (in my words), that > - the 1742A in STANDARD mode is backward compatible to the drivers > for the 1542B to allow software using these drivers to > be used with the new 1742A > - there is no speed penalty for this mode, i.e. the 1742A will still > use the enhanced EISA features like the 32-bit EISA DMA mode. > But you can't use the new features added to the 1742A > (and a list of it, I don't really understand) Yes, I really see *very* little performance enhancement in enhanced mode. >So, what's the problem ? >I am stuck. I did change the CPU speed (switched to 8 Mhz), disabled the shadow >ROM feature for Video BIOS, etc. all to no avail. Yeah, same here.... Jones -- Jones M Murphy Jr (212) 602-4375 NatWest Investment Bancorp, National Westminster Bank PLC 100 Wall Street, New York, NY10005 FAX (212) 269-0113