Support & Tips for
 GVP TekMagic 060
aka G-Force 060

This card is also known as G-Force 060.  It is part of the excellent series of G-Force cards (G-Force 030, G-Force 040) made by Great Valley Products for Amiga 2000.  The TekMagic 040 also exists, and as name indicates comes with 68040 processor instead of 68060.  The G-Force 040/060 was manufactured by Great Valley Products even up till 1999.  The only other comparable-performance 68060 based accelerator board is Blizzard 060 by Phase 5 (later DCE) and DKB Wildfire (68060).  The TekMagic 060 with 68060 @50mhz, 128 MB RAM and DMA SCSI-II controller, is the fastest accelerator for Amiga 2000 and beats out many accelerators for A4000/1200 (with exception of PowerPC ones of course!).  After owning and working with systems with Commodore 68030, then G-Force 68030 and G-Force 68040, I can say this is board really rocks and is 100% worth the money spend.  The TekMagic 060 allows the Amiga 2000 to reach the pinnacle of speed.

Photo of Tekmagic060
Rev 2 by Great Valley Products - M Inc.

Photo of TekMagic060

Rev 2 by Great Valley Products "Jeff Boyer, Allen PCB". 
These are the designers of the board.  Jeff Boyer and Scott Hood with GVP since 1989, both were former Commodore employees, who previously designed
A2052/2058 Ram Boards, A2091/A590 SCSI Controller and the A2320, Amber Chip (Hood).

Main Features
The board is picky about the different types of RAM modules.  Some work, some don't.  I have been lucky to pick my 128 MB RAM and both of TekMagic060 boards worked out fine. 
I did purchase 4 identical SIMMs, as my past Amiga and PC experience suggests not to mix SIMM modules.  Please, check that the actual plastic jumpers are 100% working (I found 2 of mine were faulty and  did not make proper contact causing weird hickups).   This may be obvious but...
The recommended setup is a Amiga 2000 rev 6.2 or higher, with kickrom 3.1 (minimum is kickrom 2.04).  One drawback, is that the TekMagic060 can be very picky about some A2000 motherboard revisions, and their bus noise.  The other minor drawback, is that the embedded tekscsi2.device will not automount other filesystems than FFS.  Other than that, hardware NCR/Symbios Logic 53c710 and software (tekscsi2.device) sides of SCSI-2 controller board is excellent.
Jumper Settings
First column are my settings.
JR1 ON - burst mode: ON - enabled
JR2 OFF - RAM speed: OFF - faster access time (60ns RAM)
JR3 ON - burst write: ON - enabled
JR4 ON - burst read: ON - enabled
JR5 ON - GVP SIMM: ON - 16 MB; OFF - 4 MB
JR6 ON - 72 pin SIMM: ON - double sided; OFF - single sided
JR7 ON - reserved / factory default
JR8 ON - refresh: ON - 4k; OFF - 2k or 4k
J1 2-3 - CPU power: 1-2 – 5V (68040 only); 2-3 - 3.3 V (68060 only)
J2 2-3 - CPU clock: 1-2 - 68040; 2-3 - 68060
J3 OFF - clock: OFF - enabled
J4 ON - 68000 mode: OFF - enabled
J5 OFF - DTACK pull-up: OFF - enabled
J6 OFF - active SCSI termination: OFF - enabled
J7 OFF - interrupt pending: ON - DMA backoffs; OFF - DMA ignores interrupt
J9 1-2 - EPROM type: 1-2 - 27C256; 2-3 – 27C512
JR2 jumper chart
CPU Vs. 68060 50Mhz 68040 40Mhz 68040 33Mhz JR2 Settings



Installation of Amiga Workbench 3.1 / 3.9
Attention : 68060.library IS NOT included in the 3.1 OS disks, so follow the suggested installation procedure (i.e. booting from the provided diskette) otherwise your Amiga won't boot. Again, you cannot boot off OS 3.1 disks. 

Later, after complete OS install, when booting, your amiga 2000 may still refuse to boot. This is because reboot by software never works. Once disk stops clicking and red power light flicks, you have to press CTRL-A-A once in order to really reboot. This is due to the RESET pulse sent by the G-FORCE, which is too short for the rest of the Amiga to really reset.   This is not a defect or hardware failure, and has been well documented since the release on a number of reviews.
Final conclusion, two thumbs up for TekMagic 68060.

Other Links
Tips and Tricks for G-Force 040/060
Greg Donner Unofficial Support of GVP-M4060/GVP2060

All Rights Reserved.  Copyright 2006-2008