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- Path: sparky!uunet!newsflash.concordia.ca!mizar.cc.umanitoba.ca!bison!draco!gremlin!charles
- From: charles@gremlin.muug.mb.ca (Charles)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: Adaptec SCSI controllers query
- Message-ID: <1993Jan11.044624.1396@gremlin.muug.mb.ca>
- Date: Mon, 11 Jan 1993 04:46:24 GMT
- References: <km3.726408428@dolphin.doc.ic.ac.uk> <1993Jan7.220115.10684@ico.isc.com> <402@heimdall.sdrc.com>
- Organization: The Haunted Unix Box
- Lines: 33
-
- scjones@thor.sdrc.com (Larry Jones) writes:
-
- >That's not quite true -- they're upward compatible, but not downward
- >(the 1542B supports scatter/gather I/O, the 1542A doesn't). As long
- >as you just use the on-board BIOS the cards are interchangable, but
- >if you plan to use an external driver (like for Unix or OS/2) be sure
- >it supports the 1542A.
-
- According to the compatability chart in the Adaptec 1542A tech ref manual,
- the 1540A and 1542A DO support scatter gather, but the 1540 does not.
-
-
- COMPATIBILITY CHART
-
- Function 1540 W1542A 1542A 1540A 1640
- Floppy Disk Controller No Yes Yes No No
- Synchronous Transfer No Yes Yes Yes Yes
- Selectable DMA Speeds No Yes Yes Yes POS
- Programmable DMA Speeds Yes Yes Yes Yes Yes
- Internal SCSI Connectors Straight Rt Angle Rt Angle Rt Angle Straight
- Scatter Gather No Yes Yes Yes Yes
- 64 Head BIOS Option Yes Yes Yes Yes
- 16 Head BIOS Yes No No No No
- LED Connector No Yes Yes Yes Yes
- Target Mode No No Yes Yes Yes
- LA 17-19 Jumper Yes Yes No No NA
- Micro Channel No No No No Yes
- PC/AT Yes Yes Yes Yes No
-
-
- Charles
-
-
-