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From: skraw@thiger.UUCP (Stephan von Krawczynski)
Newsgroups: comp.sys.amiga.hardware
Subject: Re:  scsi-controllers
Message-ID: <01849.011307@thiger.UUCP>
Date: 13 Aug 90 04:43:07 GMT
References: <02969.AA02969@babylon.UUCP>
Organization: THIndustries Software Development
Lines: 74

>In article <02969.AA02969@babylon.UUCP> rbabel@babylon.UUCP (Ralph Babel) writes:
>In article <01789.102311@thiger.UUCP> skraw@thiger.UUCP
>(Stephan von Krawczynski) writes:
>
>> does anybody know a scsi-controller (besides ALF2) that
>> supports:
>>
>> - FULLY functional disconnect/reconnect-protocol
>    ^^^^^^^^^^^^^^^^
>Heh-heh! I don't believe this until I've tested it myself!

believe it, it does. does yours ?

>> - multiple LUNs
>> - password protected partitions
>> - automount of all partitions
>> - autoboot from FFS-partition
>> - RDBs (interchange of media with other controllers like A2091/A3000)
>> - hd_scsicmds
>> - changeable media (syquest) with FFS
>
>Except for the password protection:
>A2091/A3000 and GVP's latest SCSI driver.

cannot say anything about (your) gvp-driver (its yours, isn't it?), BUT:
A2091/A3000 DOES NOT SUPPORT disconnect/reconnect with multiple drives
(who needs d/r with one drive? this is completely absurd)


>But what about ...
>
>- DMA instead of polling,

1. who polls? do you?
2. why are these DMA-controllers that slow?

>- no MaxTransfer limit (i.e. 0x7FFFFFFF),

you are right, a maxtransfer of 32MB is quiet limited (of course you know
a lot of people with A2000 having more than 32MB continous memory :-)

>- block sizes != 512 (e.g. 20 meg Bernoullis),

aehm 1.3 FFS?

>- driver automatically executing out of 32-bit memory,

talking about harddisk-controllers, where is the 32-bit mem?

>- FileSystem.resource - automatically uses 2.0 ROM filing system,

sorry, i forgot this one. ALF2 has it.

>- multiple controller boards supported with a single driver EPROM,

oops, did i tell you something about ALF3? includes EVERY feature of ALF2
plus some new ones (like multiple controller boards supported with a single
driver EPROM :-)

>- A-Max II support.

i'd rather say A-MaxII supports harddisks than vice versa, wouldn't you?


>Of course, I'm biased, but so is Stephan. :-)
>
>Ralph

--
best regards, 
stephan von krawczynski 

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