
                     DKB RapidFire SCSI-II Controller
                     ================================

BRIEF DESCRIPTION

The  RapidFire  is  a  SCSI-II  (not wide or fast) controller with 2 SIMM
sockets for up to 8MB of ram expansion.


AUTHOR/COMPANY INFORMATION

Name:           DKB
Address:        29318 Lorie Lane
                Wixom, MI 48393
                USA

Telephone:      (313) 348-3755
FAX:            (313) 348-3531


LIST PRICE

        $159 (US).

        I paid $128 plus shipping.


SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS

HARDWARE

        Needs a ZorroII bus only.

SOFTWARE

        Should work with any Amiga from Kickstart 1.3 to
        3.x. Requires only the DKB driver software to be
        installed via floppy. (dkbscsi.device)

COPY PROTECTION

None


MACHINE USED FOR TESTING

A2000 020, 4MB fast, 2MB chip, 3.1 OS in ROM
A3000 40Mhz 040, 32MB fast, 2MB chip, 3.1 in rom.
A4000 25Mhz 040, 48MB ram, 2MB chip, 3.1 in rom.
        (2) Comports 8 port serial cards
        (1) 4.3 gig Quantum Grand Prix
        (1) 1 gig Toshiba
        (1) 1 gig IBM OBI drive.
        (2) 540MB junker stock IDE drive on 4000 IDE controller


INSTALLATION

Installs  in  any  of your 4 or 5 ZorroII/II slots.  It only uses ZorroII
tho.   It slides in a little rough, but fit into the Zorro pins just fine
in the end.  Unfortunately, at least in my A4000, the back end face plate
on  the  card  was too large to screw onto the mounting slot in the back.
So instead it just sits there, still firm enough for very safe use.

The  installation  of  the driver software is very easy, the disk is even
bootable.   There  is  no  copy util or install script.  The programs are
just  there  to  use, you can copy them if you want.  The software itself
wasn't  to  bad  for  configuration a drive.  The dkbscsi.device is built
internal  on  the  rom  of  the  card  I  assume.  You can access it, via
hdtoolbox/etc but it is not on the disk or in devs:.  I like it this way.


REVIEW

The  card  comes  in  a Red good looking box packed into some foam packed
around it.

The  card itself?  My initial view was a bit dissapointing, the card is a
utteryly simply design.  I could have designed this layout myself.  :)

I got it installed in my A4000 and looked to for the small "1" the manual
said  would  be  there to show pin 1 of the SCSI 50 pin connector.  There
was  no  1  and the small arrow that was there just didn't register in my
head.   Now,  on  the  other 5 SCSI 1 & 2 controllers I have had over the
years have never had a problem if you accidentally installed the cable on
upsidedown.  In other words, pin 50 on pin 1.  The HD activity light just
lit  up and nothing worked until you reversed the cable.  Well, I plugged
in  my  3  SCSI  drives,  properly  terminated,  properly configured, but
backwards  on the SCSI cable, and turned the power on.  I looked down and
watched  a tracer get white hot and blow right off the card!  I was quite
mad  about  this.   I couldn't believe that this caused a problem, I have
reversed SCSI connectors on my Warp, an A2091, A Fastlane, the 3000 stock
cont,  and  a  GVP 040 card without ever a problem, let alone smoking the
card!

Anyway,  got  the ol soldering iron out (the card no longer works at this
time  of  course)  and  ran  a bead of solder over the old trace.  Got it
working,  <whew>  I wasn't in the mood to ship this back to DKB the day I
got it.  :)

So  I  reconnected  my drives, correctly this time, and tried to boot the
SCSI  bus  light  just  lit up and wouldn't shut off..  I moved my drives
around  and  SCSI ID's around and it still wouldn't boot.  So I had to do
it, I forced myself to open the manual and searched for an answer..  Here
is what I found:

  "The RapidFire board uses passive Termination.  Some of the newer
   SCSI drives such as the Quantum Trailblazer series, include an
   active terminator, which should not be used with the RapidFire.
   If your drive uses active termination, consult the drive manual
   for information on how to disable it"

Well  Termination  was already completely disabled on the drive.  I tried
EVERY  possible  config on this SCSI chain over a 3 hour period this card
had  no  hopes of working with this very widely sold drive.  I called DKB
tech  and he told me I could get it working if I took off the termination
jumper  (which  I  had  done) and that I could get this drive working, he
asked if I would like to ship my setup off to him and he thought he could
get  it  working.   I  decided just to wait for my CyberStorm060 and SCSI
modual  to use my 4.3 gig drive now...I thanked him for his help and gave
it  another  30  min of trying with no luck.  I don't think he could have
got it working either.

My  Quantum  GrandPrix  4.3  gig  drive works great on my Warp SCSI on my
3000, and it even worked GREAT on my A3000 slow OLD scsi bus!

I  am now successfully running my IBM and Toshiba drives on the DKB card.
I  have no choice but to run everything this way because, when I moved my
BBS  (vrb.com)  to  an  A4000  I  lost  my  40Mhz  040 3000 Warp and it's
incredible  SCSI  speed.   The Warp wouldn't boot in my A4000.  So, until
the  CS060/SCSI  II is available, I had to find a quick SCSI II solution.
I  can't  wait to get my Warp converted for the 4k or my CS060, I miss my
4.3 gig drive as well as decent speed.

As  for RAM, I took 8 MB off my new A4000's motherboard and put it on the
card  thinking it would have better memory access than the pitiiful A4000
mem  bus, the DKB card was very easy to configure, 2 jumpers moved and it
was  ready  for my simms.  The jumper config is printed on the card which
is a very good idea.

To help with overall Speed on my system I went ahead and installed AFSpro
and  telneted  to  their  support  site  and  got  the newest beta of the
software.   Boy  did  this help!  AFSpro cut my boot time in half!  I now
wasn't so distrought about the SCSI performance as I was.


DOCUMENTATION

It has a 10 page (or so) manual with it.  The Manual is fair and explains
about  everything  you need to know to get the card running well.  Pretty
forward and simple.


LIKES

This is a tough one.  After what I am used to in SCSI cards, this card is
nothing  wonderful.   I  do like the fact that you can mount a very small
3.5"  drive on the card itself, this helps out users that don't have room
anywhere else in their system.


DISLIKES AND SUGGESTIONS

The  card  design  is  so  simple  it  seems  like a first project from a
highschool  Electronics  class.   When  the  card blew a trace I couldn't
believe  my eyes.  The 50pin connector was so tight I couldnt pull off my
cable  the  first  time  and  ended  up  gently prying it off with a tiny
screwdriver  over  a  4  minute  period.  The next 50pin connector that I
crimped onto my cable, I oiled with a nonconductive lube.  This seemed to
help, but not much.

I  2 SIMM sockets where generally fine, but when I installed ram in them,
I  wasn't  comfortable  with  the hight in relation to the card above it.
The simms where actually touching one of my comports cards.

The  RAM  speed was only 16 bit access.  (or so I was later told) and was
actually slower than the 4000 stock memory, which is SCARY!  So I put the
2 4MB simms back on the A4000 motherboard.

The  SCSI  speed?  It is not fast or wide SCSI2 so it was not much faster
than  the old stock A3000 speed.  I guess the card does it's job, but for
$149 retail it is a complete joke, a card like this would be a great deal
for  those  low end users needing SCSI if it costs about $60 at most.  It
must  have  about  $15 worth of OEM parts on it.  I have always liked DKB
and I am GREATLY looking forward to their new 8 port extremely high speed
serial  card  to run my internet BBS on, but this card just doesn't do it
for  me....   Or  anyone,  for  $60  this  would be a great card for some
people.   But  for  $150,  it  could  do much better.  I hope their super
serial/parallel/ethernet  card  is as much of a Godsend as it sounds like
it will be when it ships in late August.


COMPARISON TO OTHER SIMILAR PRODUCTS

It can't compare to my Warp Engine SCSI II and the only other card I have
tested  with  these drives is a A2091 card which is a SCSI I old C= card,
the DKB is much faster than it.


BUGS

None


VENDOR SUPPORT

I  called  DKB  to get help with my Quantum drive, well to get it working
with  the  DKB card that is.  At first I was treated like I didn't know a
whole  lot  about  drives,  once I comfirmed my abilities with him he was
pretty  darn  nice and tried to be helpful trying to find me some Quantum
settings, he couldn't find them, but that was alright I nothing was going
to get this drive working.


WARRANTY

1  year  Warranty.  Full repair.  Customer must pay shipping.  Unknown if
selling the card will transfer warranty.


CONCLUSIONS

Overall,  a  good  product,  for  1990.   If they would sell the card for
around  $60,  what  is  it  worth  my  review  might  have been much more
favorable.

I  know  DKB  has some serious smart people there, I can't understand why
they didn't use just a little bit more brains in the design of this card.

** (2 stars out of 5)


COPYRIGHT NOTICE

Copyright 1996 Aaron Smith

"Amiga, computers for people who want more than just a PC."

    Finger mustang@vrb.com info@vrb.com recent@vrb.com who@vrb.com
       A3000 Warped 040/40Mhz 16MB/2gigs, 17 serial ports, OS3.1
         Visit my Cnet-Rexx-AWS Integrated Web page www.vrb.com!
                     A4000Tower 060 or PPC soon!
                        Call me via AmiPhone!

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