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Received: by minnie.vk1xwt.ampr.org with NNTP id AA1620 ; Tue, 23 Feb 93 14:50:50 EST Xref: sserve alt.cd-rom:5557 comp.unix.bsd:11398 comp.os.msdos.programmer:18963 Path: sserve!manuel.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!saimiri.primate.wisc.edu!sdd.hp.com!nigel.msen.com!math.fu-berlin.de!mailgzrz.TU-Berlin.DE!ceres.fokus.gmd.de!gmdtub!bigfoot!tmh From: tmh@condor.first.gmd.de (Thomas Hoberg) Newsgroups: alt.cd-rom,comp.unix.bsd,comp.os.msdos.programmer Subject: Re: CD-ROM drive programming (low level) Message-ID: <TMH.93Feb19032508@condor.first.gmd.de> Date: 19 Feb 93 02:25:08 GMT References: <greg.729868470@coombs> Sender: news@bigfoot.first.gmd.de Followup-To: alt.cd-rom Organization: GMD-FIRST, Berlin Lines: 42 In-reply-to: greg@coombs.anu.edu.au's message of 16 Feb 93 13:14:30 GMT In article <greg.729868470@coombs> greg@coombs.anu.edu.au (Greg Price) writes: Hi there, I have a Matsushita/Panasonic CR-522-B CD-ROM drive, AT interface, and I'm after low level programming information, ie NOT the DOS driver interface. I need this to write a device driver for 386BSD UNIX. I have asked the countries' Panasonic people and they don't have the info (they will have to ask Japan). The drive is connected by a small card that comes with it (LMEP0084B or equiv [Matsushit part #]) and will have the same programming interface as the Sound Galaxy card, as they provide the DOS Sound Galaxy driver with it (and it works!). If you have any information that will help me, or pointers where to look, please send me some mail, etc. I don't have the info, but I believe there is more than one AT-Bus "standard" for CD-ROM drives... Since expensive SCSI CD-ROM drives are still evolving too fast for my taste, I got an inexpensive AT-BUS interface CD-ROM from a company called Mitsumi that I assumed would work with my brand-new Sound-Blaster 16ASP. Well I should have known better... (will I *ever* learn?) The Sound-Blaster failed to work when the Mitsumi drive was connected to the CD-ROM connector... It came with a 16-bit interface card (why do you guess?) and DOS drivers. (BTW even the pins of the 4 pin audio connector didn't match those of the SB16 ASP.) It can be configured to quite a lot of I/O addresss and supports 16-Bit motherboard DMA. There is no address of the company anywhere and the manual seems to be an OEM version that doesn't even include a copyright. It's cheap, sells like hot-cakes and work just fine under DOS and Windows... Does anybody have any more info on this drive? --- Thomas M. Hoberg | Internet: tmh@first.gmd.de 1000 Berlin 41 | tmh@cs.tu-berlin.de Wielandstr. 4 | Germany | BITNET: tmh@tub.bitnet +49-30-851-50-21 |