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Xref: sserve comp.sys.ibm.pc.hardware:47568 comp.os.386bsd.questions:874 comp.periphs.scsi:9960 Path: sserve!newshost.anu.edu.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!caen!umcc.umcc.umich.edu!jon From: jon@umcc.umcc.umich.edu (Jon Zeeff) Newsgroups: comp.sys.ibm.pc.hardware,comp.os.386bsd.questions,comp.periphs.scsi Subject: Adaptec 1742/1542 tech question Date: 19 Mar 1993 14:15:09 GMT Organization: UMCC Lines: 18 Distribution: world Message-ID: <1ockhdINN9uc@srvr1.engin.umich.edu> NNTP-Posting-Host: umcc.umcc.umich.edu How does an Adaptec 1742 (or BUSTEK equivalent) operate (either in normal mode or 1542 compatability mode)? Specifically, 1) does it act as a EISA 32 bit bus master or use EISA 32 bit DMA? 2) If I specify edge triggered interrupts with the EISA config program, is this then completely transparent to drivers that use the card? The reason I'm asking is that I have a HINT motherboard with it's Ceasar chipset. This board is very cost effective and has "EISA" and VESA local buses. The catch is that this EISA bus doesn't support 32bit DMA, level triggered interupts, or the EISA sanity timer. It does suport 32 bit bus masters and edge triggered interrupts. The only EISA card I expect to use is the scsi controller and I wonder if I'll have problems with running Windows NT or various flavors of Unix. 66Mhz HINT MB from Essence, $815, 714/546-3110