pim@cti-software.nl (Pim Zandbergen) (03/19/91)
Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? Will the AHA-1542 run in an EISA system ? If both are true, will the AHA-1740 provide clear benefits ? Thanks for your answers. -- Pim Zandbergen domain : pim@cti-software.nl CTI Software BV uucp : uunet!mcsun!hp4nl!ctisbv!pim Laan Copes van Cattenburch 70 phone : +31 70 3542302 2585 GD The Hague, The Netherlands fax : +31 70 3512837
src@scuzzy.in-berlin.de (Heiko Blume) (03/20/91)
pim@cti-software.nl (Pim Zandbergen) writes: >Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? >Will the AHA-1542 run in an EISA system ? >If both are true, will the AHA-1740 provide clear benefits ? the 1740 has a 154[02] compatibility mode, so it should work. the new/enhanced mode requires new drivers. it does full 32bit DMA in both modes. btw: there's also a 1744 which has a differential scsi bus. -- Heiko Blume <-+-> src@scuzzy.in-berlin.de <-+-> (+49 30) 691 88 93 public UNIX source archive [HST V.42bis]: scuzzy Any ACU,f 38400 6919520 gin:--gin: nuucp sword: nuucp uucp scuzzy!/src/README /your/home
cm@jet.uucp (colin manning) (03/21/91)
In <1991Mar19.233049.24139@scuzzy.in-berlin.de> src@scuzzy.in-berlin.de (Heiko Blume) writes: >pim@cti-software.nl (Pim Zandbergen) writes: >>Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? Does anyone know if it will also work under SCO Unix 3.2.2 ? -- - Colin Manning, cm%jet.uucp@ukc.ac.uk (world) OR cm@jet.uucp (UK only) ------------------------------ Disclaimer: Please note that the above is a personal view and should not be construed as an official comment from the JET project.
neese@adaptx1.UUCP (03/28/91)
>/* ---------- "Re: Adaptec AHA-1740 on ISC 2.2 ?" ---------- */ >In <1991Mar19.233049.24139@scuzzy.in-berlin.de> src@scuzzy.in-berlin.de (Heiko Blume) writes: > >>pim@cti-software.nl (Pim Zandbergen) writes: > >>>Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? > >Does anyone know if it will also work under SCO Unix 3.2.2 ? Yes. It has been thoroughly bashed under SCO 3.2.2. Roy Neese Adaptec Senior SCSI Applications Engineer UUCP @ neese@adaptex uunet!cs.utexas.edu!utacfd!merch!adaptex!neese
tony@ajfcal.uucp (Tony Field) (03/30/91)
neese@adaptx1.UUCP writes: >>/* ---------- "Re: Adaptec AHA-1740 on ISC 2.2 ?" ---------- */ >>In <1991Mar19.233049.24139@scuzzy.in-berlin.de> src@scuzzy.in-berlin.de (Heiko Blume) writes: >> >>>pim@cti-software.nl (Pim Zandbergen) writes: >> >>>>Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? >> >>Does anyone know if it will also work under SCO Unix 3.2.2 ? >Yes. It has been thoroughly bashed under SCO 3.2.2. Why does the 1740 spoof head/cylinder numbers? I have a 670 MB Hitachi drive tied to the Adaptec. When the hard disk setup shows you the drive configuration, it indicates 64 heads and ~630 cylinders. This looks like a "1024 cylinder spoof" since the Hitachi drive has more than 1024 cylinders. Unfortunately, you cannot enter the drive defect table unless you know the spoofing algorithm. The Adaptec bios cannot be turned off - if it is turned off, it will not run under ISC. Is there any way to turn off the spoofing??? Other than this VERY serious configuration problem associated with (i think) the Adapted bios, ISC unix runs the Adaptec quite nicely.... tony... ------------------------------------------- tony%ajfcal@cpsc.ucalgary.ca
src@scuzzy.in-berlin.de (Heiko Blume) (04/01/91)
tony@ajfcal.uucp (Tony Field) writes: >Why does the 1740 spoof head/cylinder numbers? I have a 670 MB Hitachi >drive tied to the Adaptec. When the hard disk setup shows you the drive >configuration, it indicates 64 heads and ~630 cylinders. This looks like >a "1024 cylinder spoof" since the Hitachi drive has more than 1024 >cylinders. yep, that is for MESS-DOS, of course. > Unfortunately, you cannot enter the drive defect table unless >you know the spoofing algorithm. there is no point in using the unix defect tables for scsi disks. the drives themselves handle all that for you (although you might have to tell them with SCSICNTL). most even reallocate defective sectors transparently on the fly, but the block numbers do NOT become invalid, so there's no need to tell unix. >The Adaptec bios cannot be turned off - if it is turned off, it will >not run under ISC. nothing can run if it's turned off :-) >Is there any way to turn off the spoofing??? no. just verify the drive with the bios routines to make sure. -- Heiko Blume <-+-> src@scuzzy.in-berlin.de <-+-> (+49 30) 691 88 93 [voice!] public UNIX source archive [HST V.42bis]: scuzzy Any ACU,f 38400 6919520 gin:--gin: nuucp sword: nuucp uucp scuzzy!/src/README /your/home
neese@adaptx1.UUCP (04/02/91)
>>>/* ---------- "Re: Adaptec AHA-1740 on ISC 2.2 ?" ---------- */ >>> >>>>pim@cti-software.nl (Pim Zandbergen) writes: >>> >>>>>Will the Adaptec AHA-1740 EISA SCSI host adapter run with ISC UNIX 2.2 ? >>> >>>Does anyone know if it will also work under SCO Unix 3.2.2 ? > >>Yes. It has been thoroughly bashed under SCO 3.2.2. > > >Why does the 1740 spoof head/cylinder numbers? I have a 670 MB Hitachi >drive tied to the Adaptec. When the hard disk setup shows you the drive >configuration, it indicates 64 heads and ~630 cylinders. This looks like >a "1024 cylinder spoof" since the Hitachi drive has more than 1024 >cylinders. Unfortunately, you cannot enter the drive defect table unless >you know the spoofing algorithm. > >The Adaptec bios cannot be turned off - if it is turned off, it will >not run under ISC. > >Is there any way to turn off the spoofing??? > >Other than this VERY serious configuration problem associated with (i think) >the Adapted bios, ISC unix runs the Adaptec quite nicely.... This is not a configuration issue. The reason you cannot turn this off, is due to the SCSI interface itself. SCSI presents itself as a logical block interface. There is no cyl/head/sectors numbers that would make any sense for the SCSI bus. So we present the numbers so DOS can function and OS/s that support DOS partitions to function as well. On the defect list. SCSI drives all appear to be error free to the OS. They take a bad sector and replace it with a spare on the disk. This is done transparently to the OS, sometimes on the fly, sometimes not, but always at format time. Roy Neese Adaptec Senior SCSI Applications Engineer UUCP @ neese@adaptex uunet!cs.utexas.edu!utacfd!merch!adaptex!neese