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GoldenGate486SLC
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1993-01-04
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Path: menudo.uh.edu!menudo.uh.edu!usenet
From: dkm@cs.itc.hp.com (Dave K. Martin)
Newsgroups: comp.sys.amiga.reviews
Subject: MINI-REVIEW: Vortex Golden Gate 486SLC PC/AT Emulator
Followup-To: comp.sys.amiga.emulations
Date: 4 Jan 1993 21:52:05 GMT
Organization: The Amiga Online Review Column - ed. Daniel Barrett
Lines: 251
Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
Distribution: world
Message-ID: <1iabi5INNehv@menudo.uh.edu>
Reply-To: dkm@cs.itc.hp.com (Dave K. Martin)
NNTP-Posting-Host: karazm.math.uh.edu
Keywords: hardware, emulator, IBM PC, MS-DOS, bridgeboard, commercial
PRODUCT NAME
Vortex Golden Gate 486SLC PC/AT Emulator
BRIEF DESCRIPTION
The Vortex Golden Gate 486SLC is an IBM AT-Emulator for Amiga
2000/3000/4000 systems. It uses a 25 MHz 80486SLC CPU. The emulator is a
Bridgeboard style card which plugs into a "bridge" slot to access both the
Amiga Zorro bus and the IBM ISA bus on the Amiga motherboard.
AUTHOR/COMPANY INFORMATION
GERMANY
Name: Vortex Computersysteme GMBH
Address: Falterstrasse 51-53
D-7101 Flein
Telephone: +49-7131-59720
FAX: +49-7131-55063
USA
Name: Vortex Worldwide Branch Office
Address: 3835 Richmond Ave. Suite 138
Staten Island, NY 10312
Telephone: 718-967-1509
FAX: 718-948-0893
E-mail: Compuserve: 100015,330
Internet: 100015.330@compuserve.com
LIST PRICE
Vortex Golden Gate 486SLC $1099.00 (US dollars)
Optional HD Floppy Disk Controller $ 89.00 (US dollars)
SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS
HARDWARE
One free bridge slot.
One megabyte of Amiga ram.
Amiga hard drive is not required. Amiga 68020/30/40
accelerator cards are supported but are not required.
SOFTWARE
AmigaDOS 1.3 and 2.x are supported.
No MS-DOS system software is supplied with the Golden Gate
486SLC. MS-DOS versions 3.2 up to 5.0 and DR-DOS versions
5.0 and 6.0 have been run successfully by Vortex.
COPY PROTECTION
None.
The Amiga software for the Golden Gate 486SLC installs on a hard
disk using the provided installation program.
MACHINE USED FOR TESTING
I installed and tested the Golden Gate 486SLC in the following Amiga
system:
Amiga 2000 with rev 4.3 motherboard.
ECS AGNES and DENISE chips.
One MB of chip RAM, seven MB of 16-bit fast RAM.
Commodore A2320 display enhancer with Commodore A1960 monitor.
Commodore A2091 SCSI controller with a Quantum 105 megabyte hard
drive.
Microbotics 8-UP! memory card.
CSA Mega-Midget Racer 68030 accelerator board with two MB of
32-bit dynamic RAM.
Kickstart 2.04 ROM version 37.175 and Workbench version 37.67.
The Vortex Golden Gate 486SLC was configured with:
The optional High Density floppy disk controller was installed.
The optional math coprocessor chip was not installed.
Eight megabytes of memory were installed (two four MB SIMMS).
All hardware jumpers on the board were left in the default
configuration.
MS-DOS 5.0 system software was used for all tests.
MINI-REVIEW
The Vortex Golden Gate 486SLC board that I ordered finally arrived.
After playing with it for a few hours, I was going to try to post my initial
impressions of the board. After a couple of abortive attempts, I realized
that there is just too much to cover without doing a full review. After I
get a little more time with it, I will write a full review for c.s.a.reviews.
Until then, here are the major highlights:
o The Vortex Golden Gate 486SLC is based on the 486SLC processor chip.
This processor uses a 32 bit internal and 16 bit external data bus
much like the Motorola 68000 processor. The 486SLC has 1 KB cache
on the chip (opposed to the 4KB cache on a 486SX/DX processor). The
486SLC is compatible with the 486SX command set and is up to 2.4
times faster than a 386SX with the same clock frequency.
o The board is well made, mostly surface mount components with no cross
connects or wires.
o The Vortex Golden Gate 486SLC comes with 2 MB of RAM installed. Up
to 16 MB of RAM may be installed on board.
o Sockets are provided on board for the optional high density floppy
disk controller and math coprocessor chip.
o The board includes a built in IDE hard drive interface. A cable is
included.
o An internal floppy disk connector is on board (the optional floppy
controller chip is required) along with a DB-25 connector on the
back panel for external floppy disk drives. A DB-9 connector is
also on the back panel for the optional Monitor Master switch.
o The 486SLC has a small heat sink, but it never got more than mildly
warm. My A2000 has a fan that blows down the card slots, however.
o The manual is for the 386SX and 486SLC boards and has German,
English, and French sections. Each section is about 117 pages
long. The diagrams and photographs are excellent. The installation
and configuration sections are well organized, although careful
reading is essential for some configuration options.
o For use in A2000's, a small adapter is included that goes into the
68000 socket, and the 68000 is plugged into the adapter. The adapter
only has a capacitor connected across two pins, nothing else.
o Hardware installation was easy: plug the card in, and connect the
floppy drive cable.
o The Amiga side software has a hard disk install program. Just click
on the icon.
o A disk is included containing MS-DOS programs for installing and
formatting hard drives, file transfers between the Amiga and Golden
Gate, etc.
o With the optional floppy disk controller chip installed, the Golden
Gate can control drives in all of the standard sizes from 360KB up
to 2.88 MB. (Each of the 3 floppy drives has 31 possible options
that can be configured!) Setting up all of the possible options in
SETUP could be a challenge.
o Any Amiga floppy drive can be configured to operate as either a 40
track (360K) or 80 track (720K) floppy drive for the Golden Gate
card. The floppy drives then work as normal Amiga drives until the
Golden Gate window is activated. Then the floppy acts as a IBM
drive (no connecting cable is used). The Amiga still controls the
disk from commands passed from the Golden Gate board via the Zorro
bus. Read/Write speeds are quite acceptable but are affected by the
presence of an Amiga accelerator.
o Hard drives can be emulated by directly assigning an Amiga hard drive
partition or an Amiga file as an MS-DOS hard drive. These emulated
drives may be used in combination along with a drive on the internal
IDE controller. A dedicated Amiga partition works almost as fast as
the IDE drive on my system.
o I connected a 42M IDE drive connected to the built in controller on
the Golden Gate board and it works quite well. A connector on the
Golden Gate board is provided for an IDE drive activity LED.
o The 486SLC seems to co-exist peacefully with my Mega-Midget Racer (I
did not install the adapter due to lack of clearance )
o So far, I've only used the CGA video emulation. There are 27
different emulated video modes that can be configured, ranging from
four-color CGA to monochrome (two color) VGA. Four and eight color
text only VGA modes are also emulated. All emulated video modes can
be displayed by a Commodore 1084 or equivalent monitor.
o The basic VGA card from my 2088 Bridgeboard works with the Golden
Gate. Inserting a video card in any of the ISA bus slots
automatically disables the emulated display.
o I have not tried to share RAM between the Amiga and 486SLC yet.
There are jumpers on the Golden Gate board to configure two or four
MB of memory to be used as Amiga fast RAM.
o Setup options for the Golden Gate allow up to 50% of Amiga RAM to be
used as memory for the emulator. This can be split between Chip,
Fast, or public Amiga memory.
o There is a "server mode" where the Amiga can directly access the RAM
and disk drives of the Golden Gate board, but this appears to only
support diskettes that have been formatted on the hi-density drives
in AmigaDOS. It does not appear as if hi-density MS-DOS disks can be
read. (Major bummer!)
o The Amiga mouse is emulated as a serial Microsoft mouse. No mouse
driver