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Blizzard1230II
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1994-05-31
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Path: news.uh.edu!barrett
From: per-espen.hagen@ffi.no (Per Espen Hagen)
Newsgroups: comp.sys.amiga.reviews
Subject: REVIEW: Blizzard 1230-II accelerator/RAM expansion for A1200
Followup-To: comp.sys.amiga.hardware
Date: 31 May 1994 13:44:44 GMT
Organization: The Amiga Online Review Column - ed. Daniel Barrett
Lines: 365
Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
Distribution: world
Message-ID: <2sff0c$g48@masala.cc.uh.edu>
Reply-To: per-espen.hagen@ffi.no (Per Espen Hagen)
NNTP-Posting-Host: karazm.math.uh.edu
Keywords: hardware, accelerator, 68030, RAM, A1200, commercial
Originator: barrett@karazm.math.uh.edu
PRODUCT NAME
Blizzard 1230-II
BRIEF DESCRIPTION
Highly expandable 68030/FPU/RAM/SCSI-II/etc. board for the Amiga
1200.
AUTHOR/COMPANY INFORMATION
Name: phase 5 digital products
Address: Homburger Landstrasse 412
D-60433 Frankfurt/Main
Germany
Telephone: +49 69 5481844
LIST PRICE
Starts at around GBP 250 for a version with a 68EC030 CPU at 40 MHz,
no FPU, no RAM, and no SCSI.
SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS
HARDWARE
Amiga 1200 with unused trapdoor expansion slot.
SOFTWARE
None.
COPY PROTECTION
None. Well... the board is multi-layered (four or five layers?), so
I wouldn't want to copy it anyway :-) . And copying the chips would
probably take a few evenings too... The board is not hard drive
installable, but you could probably install it into an 8" floppy disk
jacket. :-)
MACHINE USED FOR TESTING
Amiga 1200.
Toshiba 250 MB 2.5" IDE hard drive.
Commodore 1940 multisync monitor.
AmigaOS 3.0 (Kickstart 39.106, Workbench 39.29).
Blizzard 1230-II board with
40 MHz 68EC030 CPU
40 MHz 68882 FPU
12 MB RAM (4 + 8 MB 70 ns SIMMs)
INSTALLATION
After any SIMMs, FPU, and add-on cards are fitted, the card plugs
into the 150-pin expansion connector in the bottom of the A1200. It is a
rather tight fit. Connecting it isn't really a problem though, unless you
use two SIMMs -- and if the SIMM in Bank 2 is two-sided, it's REALLY tight.
(See next section about attaching memory, etc., to the board.)
PHYSICAL DESCRIPTION
The card has the same basic shape as any other vendor's "1230" card,
but the placement of the various chips and connectors is a bit different.
There are components on both sides. On the side that faces the trapdoor lid
are the 68030 CPU, FPU sockets (both PLCC and PGA), a connector for an
optional FAST SCSI-II controller card, oscillator(s), a number of jumpers,
plus some other chips. On the other side are two standard 72 pin SIMM
sockets, a battery for the real-time clock, and even more chips. On the
edge opposite the 150-pin connector is a second (custom) expansion connector.
The 68030 is socketed (PGA), so a 40 MHz 68EC030 can be upgraded to a
40 or 50 MHz full 030 later. The reason for the two FPU sockets is that the
PLCC versions are cheaper, but they're not available at frequencies higher
than 40 MHz, in which case you need the PGA one. For some strange reason,
the board requires a separate FPU oscillator even if the FPU and the CPU are
clocked at the same speed (as is the case with my board). The oscillator
costs about $6, so this isn't much of a problem.
The board accepts industry standard 32- or 36-bit, 72 pin SIMMs, the
same kind that are used in A4000s, Microbotics/Paravision 12x0, and lots of
PCs. Any size from 1 MB to 32 MB is accepted. A very rare and extremely
useful feature is that the two SIMMs can actually be of different size! Any
combination is possible, from 0+1 via 4+8, 2+16, etc, up to 32+32 MB; I use
4+8. The memory is configured with the jumpers.
But the Blizzard's capabilities don't stop there. As I mentioned, the
board has two connectors for add-on cards. One is used for an optional
(currently available) FAST SCSI-II controller sub-board. This is a cute
little thing that rests on the Blizzard "motherboard". It connects via a
cable to a SCSI port, to be attached instead of the blanking plate on the
back of the 1200.
The other expansion connector is more of a mystery, although
according to some magazines, Phase 5 have announced two possible add-ons,
one of which is an MPEG decoder card (like the one for the CD32). How Phase
5 will solve this problem, which the Commodore engineers considered
"unsolvable", remains to be seen...
Finally, the board has a jumper to enable the mapping of Kickstart
ROM into RAM (also on boards with the MMU-less 68EC030 CPU). More about this
later.
IN USE
The board is COMPLETELY auto-configuring; just "plug and go". There
are no software patches, "Expansion" directory files, or anything. It
doesn't even need a "setclock load" command in the Startup-sequence to set
the internal Amiga clock! With my configuration, the 4+8 MB RAM was mapped
to one contiguous chunk at address 0DC0 0000 - 0E7F FFFF. Strange placement,
but it probably always places the border between the two SIMMs at 0E00 0000.
A full 64 MB system would thus occupy the space 0C00 0000 - 0FFF FFFF.
I have used the card extensively since I first got it some weeks ago,
and it is simply a dream to use. I upgraded from an A1200 with 4 MB fast RAM
and a 68881/14, but it's still a very noticeable step up. I use the Amiga for
various types of applications; like ImageFX, Imagine, Scala, Final Writer,
OctaMED, WinGnuPlot, and Amiga Oberon. Software that's sluggish on the
68020/14 system -- and that can include several of the above applications,
with large projects -- now runs MUCH smoother and faster. Of course, the extra
RAM also makes the machine a lot more stable. Upgraders from stock A1200s
will probably notice much faster hard disk access, too (SysInfo reports 2.1
MBytes/second from my internal IDE; I got the same results with only fast RAM,
but only about half that with the unexpanded 1200).
At first I was a bit worried about heat problems -- the plastic
trapdoor lid became rather hot, not to mention the 68030 itself. But I have
used it for longish (18+ hours) sessions, and haven't encountered any
problems. The temperature seems to stabilize -- at a rather high level,
though. (Hint: I wouldn't like to sit with the 1200-030 in my lap for any
period of time!) Some A1200 accelerator manufacturers recommend that the
machine be used without the lid present, but this does not seem necessary
with the Blizzard.
As previously mentioned, the card has a MapROM option that copies
the Kickstart ROM into RAM. Note that MapROM, as opposed to the standard
AmigaDOS "CPU FASTROM" command, also works on MMU-less (68EC030) systems.
While this makes a lot of sense on an A500 or A2000 (which have 16-bit
ROMs), it's not very critical with the 32-bit (but rather slow) A1200 ROMs.
AIBB tests show a speedup ranging from zero (most of the integer tests) to
more than 50% (WritePixel) with MapROM enabled, but the typical speedup is
less than 10%. Obviously, using MapROM will cost you one half meg of RAM.
BENCHMARKS
Any accelerator test has to give a few benchmark results, so here
goes. I have listed the results for all the AIBB 6.1 tests. All figures give
the performance relative to an unexpanded A600 (7 MHz 68000, ECS, no Fast
RAM); that is, the A600 score is 1.00 on all the tests. In addition to the
internal AIBB modules (stock A600, stock A1200, A3000/25, A4000-040), I have
included the results achieved with my previous setup: A1200 with Microbotics
MBX1200z, 14 MHz 68EC020/68881, and 4 MB Fast RAM.
The Blizzard was tested with both CPU caches ON, instruction burst ON,
data burst OFF, and MapROM enabled. 68020 and 68881/2 code was used wherever
possible. I have not listed the A4000-040 FP results with 68040 specific FP
code, mainly because it is my experience that very few programs are optimized
for this (and you can find the 040 FP results in AIBB anyway). For quick
reference, the fastest machine in each test is marked with an asterisk.
Computer A1200 A1200 A3000 A4000 A1200+Blizzard 1230
CPU 020-14 020-14 030-25 040-25 030-40
FPU No FPU 881-14 882-25 040-25 882-40
Code RAM Chip Fast Fast Fast Fast
Integer