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Conference 7.286::atarist

Title:Atari ST, TT, & Falcon
Notice:Please read note 1.0 and its replies before posting!
Moderator:FUNYET::ANDERSON
Created:Mon Apr 04 1988
Last Modified:Tue May 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1433
Total number of notes:10312

963.0. "LOW COST SCSI ADAPTER FOR RZ23" by HAMSUP::POSTERT () Mon Sep 10 1990 09:54

Hello all,

is there somebody interested in low cost connecting a RZ23 to the ATARI-ST?
I connected a RZ23 to a self made SCSI-Host Adapter.
The description of this Adapter is explained in the c't journal from JAN 1990,
printed in Germany.

There was a big Problem with the no auto motor spinup, I wrote a little 
assembler Program for auto spinup the motor.

This configuration is now working for 3 Month without any Problems, and the	
Disk is really fast.
A Tip for the note 916, under Ultrix there is a program called "rzdisk", with	
this Program you can setup on a 3100 the parameter for the RZxx and you 
can setup the auto-spin-up parameter.  

For nearer information please send Mail.  

Joerg
    
T.RTitleUserPersonal
Name
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963.1You're not the only onePRNSYS::LOMICKAJJeffrey A. LomickaMon Sep 10 1990 17:015
I do this using the DGC host adaptor, a 5-chip SCSI interface designed
by Dave Conroy.  It works great, and is easy to build.  Dave wrote the
original driver for RD52/Adaptek 4000, but I modified it to include code
for waking up the RZ23 at power-up, and to partition for the RZ23.

963.2RZ 23 DRIVER AND CONFIGURATIONLYOIS2::DENELTue Sep 11 1990 06:199
    Hello everybody,
    where can i find a driver to use an rz22 or RZ23 with an scsi
    interface. Is there a special configuration for the drive for the
    startup of the motor ?
    
    Thank you for the answers
    
    I have an atari 1040 and a mega ST1.
    
963.3You can fix the RZPRNSYS::LOMICKAJJeffrey A. LomickaTue Sep 11 1990 13:0010
There's a lengthly discussion in the AMIGA conference about how to put
the RZ drive in a VAX, and run a diagnostic that flips the bit in the
NVRAM that tells the drive to power-up spinning.  From then on, I'm told
it will work great on any Atari host adaptor (ICD, etc.).  I used to
have a copy of this, but I can't find it.  Check the keywords in
BOMBE::AMIGA and see if you can find it.

However, in my case, I'm using a pre-rpoduction prototype RZ23, and it
won't work with ICD or Atari host adaptors (the only ones I tried), but
it does work with the DGC home-brew host adaptor.  I don't know why.
963.4dgc adaptor please??LYOIS2::DENELWed Sep 19 1990 07:029
    Good morning,
    
    where can i find the dgc adaptor to connect my rz22 ?
    
    I am leaving in France (Lyon)
    
    Thank you for the answer.
    
    Best regards
963.5The DGC controller is a build-it-yourselfPRNSYS::LOMICKAJJeffrey A. LomickaWed Sep 19 1990 09:5016
You have to build the DGC controller yourself.   It is made of 5 chips,
one of which is a high speed PAL that you have to program on a PAL
programmer, and one is the 5380 SCSI controller chip.  You also need
connectors, cables, etc, and the software.  Note that is it
incompatible with any other use of the DMA port.  The schematics are
hand drawn.  I will send a copy inter-office to anyone who asks (I say
remembering that I promised some that I haven't sent yet.  Now what did
I do with that address...)

	. . . on a related topic . . .

I spoke to Dave at Toad Computer last night about the Connor CP3100,
the RZ23, and he says you have to jumpber one of the jumpers near the
SCSI connector to make it work on an ICD controller.  It still didn't
work on my proto drive.  I might borrow a production drive and try it,
just so that I can answer definitively about how to hook them up.
963.6Still out there???RIPPER::KNIGHTPget me a gin and pentatonicFri Jul 23 1993 00:446
    Hi  does anyone still have this information handy?
    
    I have an RZ23 I wish to connect to my Atari stfm 1024
    
    regards 
    P.K.
963.7Try "The Link" !MUNDIS::CSCHMIDTScio, Me Nil ScireFri Jul 23 1993 05:3220
    Get yourself the SCSI-adapter "The Link" from ICD for minimum headache.
    The adapter is slightly bigger than a normal 50-pin
    SCSI-connector,comes with the ACSI-cable, is self-powered by the 
    "termpwr"-line of SCSI and the software that comes with it is superb.
    The latest ICD-software comes with CD-Rom support also.
    
    The only other thing you need then, is a power supply and the 50-pin
    Cannon-to-50pin-Flat cable. (I used an old TK50 box).
    Once you have all your things together, locate jumper E4 on the RZ23.
    Right now, I don't exactly remember, whether I had to pull it off or
    leave it in a certain position, anyways that jumper was the key to
    getting the adapter to work at all. (The software did not see the disk
    before I fooled around with E4).
    
    The price for "The Link" here in Germany is 149 DM, which is approx 
    US$ 90.- right now.
    
    Cheers,
    
    	Christoph
963.8I'll try itGIDDAY::KNIGHTPget me a gin and pentatonicMon Jul 26 1993 23:393
    re -1
    Thanks
    P.K
963.9Good Clue...More thanks!KERNEL::CLARKSTRUGGLING AGAINST GRAVITY...Thu Apr 14 1994 06:3012
    More thanks!...
    	I have just completed the process of assembling "The Link", a drive
    and enclosure/psu only to discover that the CPU couldn't "see" the host
    adapter.
    	The drive is a SEAGATE something or other (300Mbyte) for which the
    installation documentation describes a 7-pin I.D. and option selection
    jumper header....The drive I have has 8 pins!!
    	It looks as though "The Link" is not getting TERMPWR from the
    drive, probably as the result of an incorrectly selected TERMPWR
    jumper....I'll have another go this evening!...Thanks for the clue!
    	Regards...
    		Dave Clark.
963.10Successful!!...Ta!KERNEL::CLARKSTRUGGLING AGAINST GRAVITY...Thu Apr 21 1994 10:378
    Success!!
    	I've now got a screen full of icon's and more space than I know
    what to do with.
    
    	Next problem is...Backup!!....Yes...I've seen the notes!
    
    				Regards...
    				Dave Clark