10.4 CyReL CaTTamaran TT030 Accelerator CyReL CaTTamaran TT030 Accelerator
Frequently Asked Questions
about the CyReL CaTTamaran TT030 Accelerator Fifth Edition Release Date: July 8, 1994 Note to the readers of previous editions: Additional Q&A paragraphs have been added throughout this document. To view the changes from the previous revision, please set your search pattern to '[5]'. All other readers are advised to peruse through the entire documentation.
/// What does the CyReL CaTTamaran TT030 Accelerator do?
It will speed up your Atari TT030, giving you approximately 50%
more performance than a regular TT. It does this by speeding up the
main clock of your TT from 32 MHz (standard) to 48 MHz (accelerated).
/// What happened to the 40 MHz mode? [3]
Originally, we thought the optimum we could achieve would be a
TT030 running at 40 MHz. However, during the development of the CyReL
CaTTamaran we discovered that we would be able to go all the way up to
48 MHz instead. Thus, the decision was made to drop the 40 MHz mode
and provide only the 32 MHz and 48 MHz modes.
/// Does the CyReL CaTTamaran replace the MC68030 CPU in my
TT?
No it does not. You do not have to purchase a new CPU.
/// Will the CyReL CaTTamaran speed up the FPU operations?
[3]
Yes it does. You'll get up to 60% more FPU performance with the
CyReL CaTTamaran.
/// Do I have to get a new FPU? [3]
No. You do not have to replace the CPU nor the FPU. You simply
keep the components you have.
/// Has the CyReL CaTTamaran any Cache memory? [2]
No it does not. The CyReL CaTTamaran utilizes the existing memory
in the best way possible while keeping the cost of the unit down.
/// Do I have to buy new memory?
No. You do not have to add costly cache memory to your system. You
simply keep the memory already installed in your TT.
/// Do I get a higher performance factor with faster RAMs ?
[2]
No. The CyReL CaTTamaran does not access the RAM itself. This is
being done by the CPU and the Atari TT chipset. Thus, the CyReL
CaTTamaran cannot take advantage of faster RAM chips. However, we have
optimized the memory accesses, thus giving you up to 78% better access
times than the regular TT chipset will yield. [3]
With a small modification, GE-Soft FastRAM boards can be optimized
for the operation with the CyReL CaTTamaran. Test results obtained
with GEM-Bench show that FastRAM access speeds can go up to 220%.[5]
/// Does the CyReL CaTTamaran work with FastRAM?
Yes it does. So far, we have tested the CaTTamaran with FastRAM
modules from GE-Soft and Atari.
/// Have there been any problems with FastRAM boards? [4]
One customer reported that he was not able to get some older
GE-Soft boards working correctly with the CaTTamaran. Another reported
problems with a fully loaded 64 MB GE-Soft board. Some of these
troubles can be eliminated by using a higher rated power supply,
especially if the system has already been equipped with an ST-RAM
board, TT-RAM board and/or a graphics card. There are also some 'fine
tuning' instructions available from Cybercube to avoid such problems.
Update: These problems have been eliminated. The latest CyReL
CaTTamaran revision now fully supports all TT-FastRAM sizes. [5]
/// Is there a 100% guarantee that it will work in my system?
[3]
No. We want you to understand that we cannot give you a 100%
assurance that it will work in every conceivable motherboard/expansion
board(s) combination. The CyReL CaTTamaran employs a bag full of
tricks to achieve the high performance level it provides. We have
exercised great care to insure the best possible compatibility, but as
with every other product, the risk to its use and installation lies
with the user. Please refer to the ordering details and our return
policy for more information about this issue.
/// Will the CyReL CaTTamaran generate excessive heat? [2]
No. During our extensive testing program we found that the heat
generated in the accelerated modes does not exceed the safety limits
nor does it damage any parts of your your TT.
Several design steps have been integrated to insure that the CyReL
CaTTamaran accelerator unit will run as cool and as efficient as
possible.
/// Will the CyReL CaTTamaran cause any damage to my TT? [2]
No. We have tested the full operation of the CyReL CaTTamaran and
included special design features to guarantee that the proper usage of
the accelerator will not cause any damages or malfunctions.
/// Does the CyReL CaTTamaran work with VME bus cards?
Yes it does. But we can only guarantee the full compatibility with
our own line of VME bus boards, the CyReL Sunrise M16-1280 True Color
High Resolution Graphics cards, CyReL VidiMix16 Desktop Video Modules,
CyReL MPT-16 Modules and the CyReL TrIDEnt IDE Interfaces.
/// How can I find out if I can install a CyReL CaTTamaran in my TT? That depends mostly on your TT030 motherboard revision. To
establish which TT030 motherboard revision you have, you must open
your TT030. Please note that this may void your warranty. Once you
removed the cover (and any metal shielding), please check the lower
lefthand or righthand corner of your motherboard. Write down the
revision level usually found on a white sticker on the motherboard.
For a quick and easy installation, you should have at least REV. G.
If you have a ST RAM memory expansion board, please check whether
the pins of the frontmost 96 pin DIN connector stick out at least 3
millimeters (about 1/10 of an inch) from the topside of the ST RAM
expansion board.
Further, please ensure that those pins are clean and free of any
soldering residues. [2]
/// What if I do not find any revision index/label? [2]
Several customers reported that they were unable to locate the
revision level sticker as indicated in the Q&A paragraph above.
Here are a few hints how to identify your board revision level without
the sticker:
* please locate the CPU. Is it surface mount (soldered directly to
the board) ? Look for a chip with the MC68030F33 labelling. If you
locate this chip on the right hand side of the board (underneath the
ST RAM expansion board) then you have one of the more recent board
revisions. If the CPU is on the left hand side of the board or plugged
into a socket, or even on a daugtherboard, then you have one of the
older revisions. The installation in the older revision boards is a
little more involved, since it will require some soldering.
* please check if your board has a three pin connector labelled
W101 (used to change the clock speed of the FPU). If you cannot find
this connector, you probably have one of the older revision boards.
/// Does the CyReL CaTTamaran installation require soldering?
It does not necessarily require soldering if you have a
motherboard revision REV.F or higher. Earlier motherboard revisions
will require soldering. [4]
/// What tools do I need to install the CyReL CaTTamaran?
You will need a Phillips screwdriver, a flathead screwdriver (both
to remove the TT cover), pliers or any other tool to straighten the
tabs of the metal shielding (if any) for removal and a cutter to cut
one pin of a resistor.
For a installation in older TT's, you will require a soldering
iron. [4]
/// Do I need any special expertise to install a CyreL
CaTTamaran?
No. Common sense is all that is required. If you know how to open
your TT, plug in a few plugs, you should be able to install a CyReL
CaTTamaran yourself. If you do not feel comfortable installing the
unit yourself, ask your nearest Atari dealer to perform this task for
you.
The CyReL CaTTamaran comes with our highly acclaimed RUN-ME-FIRST
installation program that will demonstrate each installation step with
graphics and animations right on your screen BEFORE you start the
installation process. The same instructions are also included in
printed form to further facilitate the process. [2]
/// Does the CaTTamaran work with the older TT motherboard
revisions? [4]
Yes. We have just released a new archive containing a 150 dpi GEM
image describing all the necessary modifications to install the CyReL
CaTTamaran in systems with the older motherboards (those that had a
CPU daughterboard). This file will be made available via several
online services for your convenience.
Please note that we included a complete set of benchmarks
(produced on such a system) below.
Update: The CyReL CaTTamaran can now also be used in systems with
TT motherboard revision Rev. B (CPU is in PGA package in a socket on
the left hand side of the board). [5]
/// Can I control the speed of the CyReL CaTTamaran?
Yes you can. Each CyReL CaTTamaran comes complete with the CyReL
Dashboard utility. This accessory program allows you to switch at any
time from 32 MHz to 48 MHz or from 48 MHz back to 32 MHz.
/// How compatible is the CyReL CaTTamaran?
The operation of the CyReL CaTTamaran if fully transparent.
Programs do not usually notice any difference when running at 48 MHz.
All programs tested so far ran without any problems. They simply
execute faster. However, we cannot give a 100% compatibility assurance
since it is virtually impossible to test every single program out
there in combination with the hundreds of utility and accessory
packages available for the Atari computers.
The speed-up will be most apparent with programs that rely on CPU
intensive tasks, like blitting, compressing, de-compressing,
converting, rasterizing, scrolling. Since the CyReL CaTTamaran speeds
up the FPU as well, programs that rely on FPU performance (like
DynaCADD or InShape) will be sped up too.
/// How about some benchmarks? [2]
Here are some PRELIMINARY figures. The benchmarks have been
compiled with Ofir Gal's GEM-BENCH Version 3.41:
GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, ST High CyReL CaTTamaran @ 48 MHz ROM relocated to FastRAM NVDI driver installed GEM Dialog Box: 0.685 463% VDI Text: 0.270 1618% VDI Text Effects: 0.525 1381% VDI Small Text: 0.345 1191% VDI Graphics: 1.150 513% GEM Window: 0.370 276% Integer Division: 1.020 150% Float Math: 0.145 160% RAM Access: 1.290 147% ROM Access: 1.285 123% Blitting: 0.970 221% VDI Scroll: 0.870 331% Justified Text: 1.120 360% VDI Enquire: 0.345 369% New Dialogs: 0.990 355% Graphics: 643% CPU: 145% Average: 511% Compared to a regular ST, the TT030 + CyReL CaTTamaran will deliver a CPU Integer Division index of over 1760%.
/// How about some more benchmarks? [3]
Here is the latest benchmark update. The CyReL CaTTamaran can be
operated in two modes, 32 MHz and 48 MHz. In 32 MHz mode, the CyReL
CaTTamaran yields exactly the same results like a standard TT030,
reporting around 100% for all the different test categories.
Below you will find three different sets of benchmarks. The first
was taken on a TT030, equipped with FastRAM and the CyReL CaTTamaran
running at 48 MHz:
GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, ST High CyReL CaTTamaran @ 48 MHz GEM Dialog Box: 2.990 106% VDI Text: 4.015 108% VDI Text Effects: 6.550 110% VDI Small Text: 3.835 107% VDI Graphics: 5.055 116% GEM Window: 0.955 107% Integer Division: 1.025 149% Float Math: 0.145 160% RAM Access: 1.185 160% ROM Access: 1.165 128% Blitting: 1.420 151% VDI Scroll: 2.700 106% Justified Text: 3.725 108% VDI Enquire: 1.015 125% New Dialogs: 3.075 114% Graphics: 114% CPU: 149% Average: 123% If you have FastRAM and you use a ROM relocator you will get the following results. Notice the favourable increase in overall system speed: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, ST High CyReL CaTTamaran @ 48 MHz ROM relocated to FastRAM GEM Dialog Box: 1.945 163% VDI Text: 2.780 157% VDI Text Effects: 4.510 160% VDI Small Text: 2.445 168% VDI Graphics: 3.945 149% GEM Window: 0.680 150% Integer Division: 1.015 151% Float Math: 0.145 160% RAM Access: 1.180 161% ROM Access: 1.180 127% Blitting: 1.300 165% VDI Scroll: 2.105 137% Justified Text: 2.720 148% VDI Enquire: 0.745 171% New Dialogs: 2.100 167% Graphics: 157% CPU: 149% Average: 155% The next benchmark shows the combined effect of a ROM relocator and a software screen accelerator, in this case NVDI. Note: these figures have been provided by one of our beta testers. GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, ST High CyReL CaTTamaran @ 48 MHz ROM relocated to FastRAM GEM Dialog Box: 0.670 473% VDI Text: 0.250 1748% VDI Text Effects: 0.495 1465% VDI Small Text: 0.335 1226% VDI Graphics: 1.140 517% GEM Window: 0.365 280% Integer Division: 1.020 150% Float Math: 0.145 160% RAM Access: 1.185 160% ROM Access: 1.180 127% Blitting: 0.955 225% VDI Scroll: 0.855 337% Justified Text: 1.080 373% VDI Enquire: 0.335 380% New Dialogs: 0.945 372% Graphics: 672% CPU: 149% Average: 532%
/// Benchmark-mania! [4]
The following tests have been performed on a TT030 Rev.A
motherboard. The first four have been recorded with a 'clean machine'.
No acceleration programs (like NVDI or ROMRAM). Just the plain system
booted from disk:
Here are the figures for TT-Medium: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + Fast RAM + FPU, TT Medium CyReL CaTTamaran, 48 MHz plain vanilla TT, Rev. A motherboard FastRAM button enabled GEM Dialog Box: 4.260 103% VDI Text: 8.520 108% VDI Text Effects: 19.110 107% VDI Small Text: 6.495 104% VDI Graphics: 7.205 110% GEM Window: 1.730 104% Integer Division: 1.020 150% Float Math: 0.150 116% RAM Access: 0.870 151% ROM Access: 1.180 118% Blitting: 4.555 118% VDI Scroll: 6.850 106% Justified Text: 8.080 105% VDI Enquire: 1.070 101% New Dialogs: 4.180 103% Graphics: 106% CPU: 133% Average: 113% Next, same thing, just with the FastRAM button disabled: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, TT Medium CyReL CaTTamaran, 48 MHz plain vanilla TT, Rev. A motherboard FastRAM button disabled GEM Dialog Box: 4.260 104% VDI Text: 8.520 108% VDI Text Effects: 19.110 107% VDI Small Text: 6.495 105% VDI Graphics: 7.205 111% GEM Window: 1.730 104% Integer Division: 1.020 150% Float Math: 0.150 153% RAM Access: 0.870 214% ROM Access: 1.180 124% Blitting: 4.555 155% VDI Scroll: 6.850 106% Justified Text: 8.080 106% VDI Enquire: 1.070 120% New Dialogs: 4.180 113% Graphics: 112% CPU: 160% Average: 125% Here are the figures for monochrome: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + Fast RAM + FPU, ST High CyReL CaTTamaran, 48 MHz plain vanilla TT, Rev. A motherboard FastRAM button enabled GEM Dialog Box: 3.095 101% VDI Text: 4.170 104% VDI Text Effects: 6.845 105% VDI Small Text: 3.985 102% VDI Graphics: 5.165 113% GEM Window: 0.980 104% Integer Division: 1.025 150% Float Math: 0.150 120% RAM Access: 0.870 151% ROM Access: 1.180 118% Blitting: 1.440 118% VDI Scroll: 2.780 102% Justified Text: 3.845 103% VDI Enquire: 1.055 103% New Dialogs: 3.205 102% Graphics: 105% CPU: 134% Average: 113% Next, same thing, just with the FastRAM button disabled: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI not present Video Mode 640 * 400 * 2 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, ST High CyReL CaTTamaran, 48 MHz plain vanilla TT, Rev. A motherboard FastRAM button disabled GEM Dialog Box: 3.095 102% VDI Text: 4.170 104% VDI Text Effects: 6.845 105% VDI Small Text: 3.985 103% VDI Graphics: 5.165 114% GEM Window: 0.980 104% Integer Division: 1.025 149% Float Math: 0.150 154% RAM Access: 0.870 218% ROM Access: 1.180 127% Blitting: 1.440 149% VDI Scroll: 2.780 103% Justified Text: 3.845 104% VDI Enquire: 1.055 120% New Dialogs: 3.205 109% Graphics: 110% CPU: 162% Average: 124% One of our customers sent us these results: These two sets show the performance in the TT-medium resolution: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from STRAM Ref TT + Fast RAM + FPU, TT Medium CyReL CaTTamaran, 48 MHz ROMRAM, Rev. A motherboard FastRAM button enabled GEM Dialog Box: 1.415 310% VDI Text: 0.595 1547% VDI Text Effects: 1.425 1440% VDI Small Text: 0.800 850% VDI Graphics: 2.725 293% GEM Window: 0.885 203% Integer Division: 1.020 150% Float Math: 0.200 87% RAM Access: 1.070 123% ROM Access: 1.280 109% Blitting: 5.510 97% VDI Scroll: 2.955 245% Justified Text: 2.500 341% VDI Enquire: 0.560 194% New Dialogs: 2.495 172% Graphics: 517% CPU: 117% Average: 410% Same thing again, this time with the FastRAM button disabled: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from STRAM Ref TT + FPU, TT Medium CyReL CaTTamaran, 48 MHz ROMRAM, Rev. A motherboard FastRAM button disabled GEM Dialog Box: 1.415 313% VDI Text: 0.595 1552% VDI Text Effects: 1.425 1442% VDI Small Text: 0.800 856% VDI Graphics: 2.725 295% GEM Window: 0.885 204% Integer Division: 1.020 150% Float Math: 0.200 115% RAM Access: 1.070 174% ROM Access: 1.280 114% Blitting: 5.510 128% VDI Scroll: 2.955 246% Justified Text: 2.500 344% VDI Enquire: 0.560 229% New Dialogs: 2.495 189% Graphics: 527% CPU: 138% Average: 423% And in monochrome: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + Fast RAM + FPU, TT Medium CyReL CaTTamaran, 48 MHz ROMRAM, Rev. A motherboard FastRAM button enabled GEM Dialog Box: 1.115 394% VDI Text: 0.480 1917% VDI Text Effects: 1.095 1873% VDI Small Text: 0.565 1204% VDI Graphics: 2.220 359% GEM Window: 0.750 240% Integer Division: 1.020 150% Float Math: 0.150 116% RAM Access: 0.865 152% ROM Access: 0.865 161% Blitting: 3.975 135% VDI Scroll: 2.875 252% Justified Text: 2.070 412% VDI Enquire: 0.350 311% New Dialogs: 1.795 240% Graphics: 667% CPU: 144% Average: 527% Now the same thing with the FastRAM button disabled: GEM Bench v3.41 * Ofir Gal 3.5.94 TT 030 TOS 3.06, MiNT not present Blitter not present, NVDI 2.03 present Video Mode 640 * 480 * 16 Colours LineF FPU installed Run and Malloc from FastRAM Ref TT + FPU, TT Medium CyReL CaTTamaran, 48 MHz ROMRAM, Rev. A motherboard FastRAM button disabled GEM Dialog Box: 1.115 397% VDI Text: 0.480 1925% VDI Text Effects: 1.095 1877% VDI Small Text: 0.565 1212% VDI Graphics: 2.220 362% GEM Window: 0.750 241% Integer Division: 1.020 150% Float Math: 0.150 153% RAM Access: 0.865 216% ROM Access: 0.865 169% Blitting: 3.975 178% VDI Scroll: 2.875 253% Justified Text: 2.070 416% VDI Enquire: 0.350 367% New Dialogs: 1.795 264% Graphics: 681% CPU: 172% Average: 545%
/// How much does the CyReL CaTTamaran cost ?
The CyReL CaTTamaran package retails for just US $99.00 or Cdn
$115.00 .[3]
/// When is the CyReL CaTTamaran going to be available?
The CyReL CaTTamaran is available now. Please contact your nearest
dealer, CyReL distributor or Cybercube for more informations. [3]
/// Do you have a list of dealers already supporting the
CaTTamaran? [4]
Yes. Here is the partial list (current as of the indicated release
date). You can order your CyReL CaTTamaran through any of these fine
dealerships or representatives:
North America: -------------- Horizon Computers Denver Colorado ATY Computers Oakland California Mid Cities Computers Bellflower California Toad Severna Park Maryland Computer Studio Asheville North Carolina Neutronics Honolulu Hawaii CompuWorld Scarborough Ontario DMC Publishing Markham Ontario Scarborough Computers Scarborough Ontario Cybercube Research Ltd Thornhill Ontario Focus Computers Toronto Ontario Vision Computers Eugene Oregon Computer Direct Spruce Grove Alberta Flickertel Minot North Dakota Compuseller West St. Charles Illinois Elden Computers Charleston West Virginia Click Here Computers Ottawa Ontario CompuWare St. Andrews Manitoba Run PC Fort Collings Colorado New: The Computer Network Falcon Systems International: -------------- Multimedia Studio Singapore Singapore ETH Computers & Sten Ltd Vantaa Finland COMPO EK Vaals Netherlands OverScan/COMPO Berlin Germany System Solutions London UK
/// Where can I get a CyReL CaTTamaran ? [3]
The CyReL CaTTamaran is shipping to a lot of dealers all over
North America right now. Please check with your nearest dealer for
availability. In case you are not able to get your CyReL CaTTamaran
Accelerator through your Atari dealer, please contact Cybercube
directly at the addresses provided below.
/// How much do I have to add for Shipping and Handling ? [3]
Please add $6.00 for S&H (regular mail). We also offer
shipments via courier. For more details, please contact Cybercube
directly.
/// Can I return the product if it will not work in my TT?
Yes you can. We will offer a 10 days return policy. Please check
for details when ordering. Note that there is a handling fee involved
when returning the product. When you return the unit, we will refund
the cost of the unit minus 15%. [3]
/// Will any de-installation require soldering ? [3]
Yes. In case the CyReL CaTTamaran might not work in your TT030,
and you decide to return it, you would have to solder the one
connection that had to be cut during the installation of the unit.
This is probably the best and most durable way to do it, but other
means of reconnecting that one connection can be devised in case you
do not have access to a soldering iron.
/// Is there be a special GEnie topic for the CyReL
CaTTamaran?[3]
Yes. Please go to the Atari Roundtable (m475;1), enter the
hardware category (set 4),then read all the latest news in the
CaTTamaran topic (rea 33 new). We would be happy to see you there and
provide any further assistance.
/// Where can I get more information if I have additional
questions?
Contact either your nearest dealer, distributor or Cybercube
directly. We will be glad to be of assistance. To reach us, send
e-mail to:
GEnie: CYBERCUBE
Cybercube Research Ltd.
Or, if you would like to call or fax, you can reach us at:
Telephone: (905) 882 0294, Mon-Fri, 10 AM to 4 PM EST (Toronto)
Copyright (c) 1994 by Cybercube Research Ltd. Specifications
Then go in their product gallery.
Bei einem Bekannten gab es noch Probleme mit dem Burst-Modus
(Original Atari-FastRAM). Abgeschaltet und alles lief. Entsprechenden
Jumper (W3 oder W105, je nach Karte) auf der Fastramkarte abziehen.
Ansonsten ist die Streuung zwischen lief und lief nicht stabil
beim Cattamaran groß. Zum Teil bestand die Meinung die
Anschlüsse anzulöten. Irgendwer meinte auch die FPU
müsste mit dem gleichen Takt laufen. Was aber theoretisch nicht
sein, weil die Kommunikation zwischen CPU und FPU asynchron
läuft. Es wurde auch die Vermutung geäußert, daß
die Abstürze von bestimmten Programmen oder deren Kombination
herkommen.
So groß soll der Geschwindigkeitsgewinn auch nicht sein,
daß es sich lohnt da tiefer zu bohren.
Copyright © Robert Schaffner (doit@doitarchive.de) Letzte Aktualisierung am 23. Mai 2004 |