Commodore Amiga 2630 Bedienungsanleitung
ACCELERATOR CARD
User’s Guide
Copyright © 1989 by Commodore Amiga, Inc. All Rights Reserved. This document may
not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any
electronic medium or machine readable form, without prior consent, in writing, from
Commodore-Amiga,Inc.
With this document, Commodore makes no warranties or guarantees, either express or
implied, with respect to the products described, their functionality, compatibility, or avail-
ability. Further, Commodore assumes no responsibility or liability for statements or repre-
sentations made by itself or by third party vendors or in the publications reproduced herein.
IN NO EVENT WILL COMMODORE BE LIABLE FOR DIRECT, INDIRECT, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY CLAIM ARISING OUT OF
THE REPRESENTATIONS MADE HEREIN, EVEN IF IT HAS BEEN ADVISED OF THE
POSSIBILITIES OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLU-
SION OR LIMITATION OF SUCH WARRANTIES OR DAMAGES, SO THE. ABOVE EX-
CLUSIONS OR LIMITATIONS MAYNOTAPPLY.
Information in this document is subject to change without notice and does not represent a
commitment on the part of Commodore. Commodore and the Commodore logo are regis-
tered trademarks or Commodore Electronics Ltd. Amiga is a registered trademark of
Commodore-Amiga, Inc. Motorola is a registered trademark of Motorola, Inc. UNIX is a
registeredtrademark ofAT&T.
F.C.C. ID
BR98YVA2630
User’sManualStatement
WARNING: This equipment has been certified to comply with the limits for a Class B
computing device, pursuant to subpart J of Part 15 of the Federal Communications Commis-
sions rules. It also complies with Standard C108.8-M1983 of the Canadian Standards
Association’s regulations. These rules and regulations are designed to provide reasonable
protection against radio and television interference in a residential installation. If not
installed properly, in strict accordance with the manufacturer’s instructions, it may cause
interference. If you suspect interference, you can test this equipment by turning it off and
on.If this equipment doescause interference, correct itby doing any ofthe following:
• Reorient the receiving antenna orAC plug.
• Changethe relative positions ofthe computer and the receiver.
• Plug the computer into a different outlet so that the computer and receiver are on
differentcircuits.
CAUTION: Only computers and peripherals with shield-grounded cables (computer input-
output devices, terminals, printers, etc.), certified to comply with Class B limits, can be
attached to this device. Operation with non-certified equipment may result in communica-
tionsinterference.
Your house AC wall receptacle must be a three-pronged type (AC ground). If not, contact an
electrician to install the proper receptacle. If a multi-connector box is used to connect the
computer and peripherals toAC, the ground must be common to all units.
If necessary, contact your dealer or an experienced radio-television technician for additional
suggestions. You may find the following FCC booklet helpful: “How to Identify and Resolve
Radio-TV Interference Problems.”’ The booklet is available from the U.S. Government
Printing Office, Washington, DC 20402, stock no. 004 000-00345-4.
Table of Contents
1. Introduction...........................................1
2. HowtoInstallTheA2630AcceleratorCard....................3
Removing theAmiga’s Cover...........................3
Installing theA2630..................................6
3. Operation.............................................9
Compatibility andTesting.............................10
Notes to Software Developers..........................11
AppendixA: Description oftheA2630 Board..................13
Appendix B: Installing a Faster Math Chip....................17
AppendixC: InstallingAnAdditional2MBof Memory...........19
AppendixD: Technical Specifications andSchematics............21
1
1. Introduction
The Amiga computer system was designed so that it can be
easily upgraded for use with other members of the Motorola®
68000 CPU family. By installing the A2630 accelerator card, your
A2000 is upgraded to a 68030 CPU. This 32-bit 68030 CPU vastly
increases processing speed over the 68000 CPU in several impor-
tant ways:
• It reads and writes data in 32-bit chunks instead of 16 bit.
• Its on-chip cache memory allows faster performance,
even with slower memory systems.
• It eliminates the need for a 68851 Memory Management
Unit because it performs these functions directly on the
chip.
• It can directly use a 68881 or 68882 Floating Point Unit for
very fast math calculations.
The A2630 is a 68030 based accelerator card that plugs into the
coprocessor slot of the Amiga? 2000. The card contains the 68030
CPU and a 68882 Floating Point Unit. The 68030 is clocked at
approximately 25 MHz, nearly four times the clock speed of the
Amiga’s 68000 CPU. The A2630 also contains fast, 32-bit wide
memory to complement the 32-bit Motorola chips. It comes with
2 or 4 megabytes of 32-bit wide on-card RAM which runs at the
68030’s speed. With this fast memory installed, the A2630 may
deliver a 400% - 600% speed increase in most integer based
operations. The card also has 64 K of ROM (expandable to 128K)
which is used for diagnostics, boot-up options, and some initial-
izations used by alternate software configurations (such as the
UNIX® operating system).
3
2. How to Install The A2630
Accelerator Card
WARNING: Unplug the Amiga 2000 before installing the
A2630. Installing the A2630 with the power on could cause
injury to the installer and damage to the equipment. Commo-
dore will not be responsible for any damages caused by im-
proper installation of the A2630. Such improper installation
may void the warranties on both theAmiga 2000 and theA2630.
Before beginning, disconnect the mouse and keyboard from the
front of the Amiga, and remove the power cord and any periph-
erals attached to the back of the machine.
A Phillips-head screwdriver is needed.
Removing theAmiga’s Cover
On the lower left side of the Amiga, remove the two screws that
hold the metal cover to its base. Remove the two screws on the
lower right side of theAmiga.
Figure1
Screws on the lower left side of theAmiga
4
Remove the center screw from the rear of the Amiga. Be careful
to remove the correct screw as shown.
CenterScrew
Figure2
Center screw on the rear of theAmiga
Turn the Amiga so that you are facing the front of the machine.
Grasp the cover on both sides, slide it towards you, and lift
upward. If the cover gets stuck, do not force it. Look under the
top of the cover towards the middle. Check to see if any wires or
cables are caught under the small projection where the middle
screw had been attached. If anything is caught, gently untangle
it, and continue to slide the cover off.
5
Figure3
Cover removal — side view
Before installing the A2630, you must first determine whether
your Amiga 2000 has a 2-layer or 4-layer motherboard. Some
machines assembled in West Germany have 4-layer mother-
boards which must have the 68000 CPU chip removed before the
A2630 can be installed. To determine the type of board you
have, look at the lower left-hand corner of the motherboard
as you face the machine. If you see a large label which says
COMMODORE AMIGA 2000, the assembly number, and
MADE IN GERMANY (BSW), you have a 4-layer motherboard.
In this case, consult an authorized service center to have your
A2630 installed. If your label is different, you have a 2-layer
motherboard, and you can continue on with the installation.
Figure4
4 layer board
6
Installing theA2630
The A2630 accelerator card fits into the 86-pin CPU slot next to
the existing 68000 CPU. To locate this slot, turn the Amiga so
that the front of the machine faces you. To your right will be the
disk drive plate and power supply. To your left are a number of
expansion slots. The existing 68000 CPU is underneath the left
edge of the disk drive plate. The 86-pin CPU slot is to the left of
the CPU, as shown in the picture. Locate the rear metal plate
that aligns with the slot. Loosen the screws and remove the
metal plate from the machine.
Figure5
A2000 — Right side view (looking down)
86 PIN CPU SLOT
68000 CPU
POWER SUPPLY
DISK DRIVE
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