home *** CD-ROM | disk | FTP | other *** search
- Path: menudo.uh.edu!menudo.uh.edu!usenet
- From: chinaski@csd4.csd.uwm.edu (Dean Paul Karpowicz)
- Newsgroups: comp.sys.amiga.reviews
- Subject: MINI-REVIEW: Derringer accelerator board for A500
- Followup-To: comp.sys.amiga.hardware
- Date: 26 Jan 1993 17:55:33 GMT
- Organization: The Amiga Online Review Column - ed. Daniel Barrett
- Lines: 86
- Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
- Distribution: world
- Message-ID: <1k3tulINN86j@menudo.uh.edu>
- Reply-To: chinaski@csd4.csd.uwm.edu (Dean Paul Karpowicz)
- NNTP-Posting-Host: karazm.math.uh.edu
- Keywords: accelerator, 68030, hardware, A500, commercial
-
-
- PRODUCT NAME
-
- Derringer accelerator board
-
-
- BRIEF DESCRIPTION
-
- This is a 68030 accelerator board for the Amiga 500. This
- mini-review concentrates on the board installation and briefly describes the
- performance.
-
-
- COMPANY INFORMATION
-
- Name: Computer Systems Associates (CSA)
- Address: 7564 Trade St.
- San Diego, CA 92121
- USA
- Telephone: (619) 566-3911
- Tech Hotline: (619) 566-3923
-
-
- MINI-REVIEW
-
- I bought the Derringer 030 in the first week of January 1993, and
- installed it. The installation manual is poorly written. It's three pages
- photocopied double-sided with no photos.
-
- I installed it on the Amiga 500 Rev. 6a. The first part of the
- installation manual has you opening the case of the A500 and removing the
- 68000 chip. After you put the chip into the Derringer 030, the manual has
- some faults. It tells you to seat the board with "moderate" pressure into
- the 68000 socket on the motherboard. However, I needed to use extreme
- pressure. I had to lean on the butt of a screwdriver to push it all the way
- down.
-
- The small plastic pins that they give you to put under the far end
- of the board are about half as long as they are supposed to be. Therefore
- the board wants to rock out of the socket from its own weight. I used the
- rubber plugs from the ends of a bicycle handlebar. After I used those, I
- found the right size spacer at work.
-
- I also used a SMALL drop of superglue at the corners of where the
- socket and header come together. I figured this will keep the board from
- coming out of the socket and can be easily broken apart if it needs to be.
-
- The instructions then say to replace the shielding (ha ha hee hee,
- nice try). The shielding will fit, but it is tight, and the Derringer 030
- will short to the shield. I tried several pieces of electrical tape, but
- the pressure of squeezing the shield back on broke through the tape. I
- ended up using a small piece of black plastic sheeting that I taped to the
- underside of the shield. Leaving the shield off will not alleviate this
- problem, for the back of the keyboard has metal shielding as well.
-
- Enough about the installation. Let's get to the performance. I
- purchased the Derringer 030 with the optional 50Mhz 68882, and it came with
- 4 MB of 32bit RAM. There is a software program included to remap the
- Kickstart ROM, add the 32-bit RAM to the system, and move the exception
- vectors and supervisor stack to 32-bit RAM. The "-res" part of the command
- unfortunately doesn't work with my hard drive. It's supposed to make the
- 32-bit RAM available early in a warm boot, speeding things up even more.
-
- The performance stats from AIBB are very close to an A3000. Some
- tests are faster, but some are slower. The results are generally 6 to 100
- times faster than a stock A500 depending on the tests being run. I use
- Pagestream a lot, and the performance gain there is incredible. Pages that
- took seemingly forever to print now are printing almost immediately. Using
- POVRay to render a scene before took 24-28 hours; the same scene now takes
- less than 10 minutes.
-
- My system is an A500 Rev 6a, GVP A500-HD+ w/ 52meg Quantum and 4 MB
- RAM, AmigaDOS 2.1, standard Denise, and 1 MB Agnus (board hacked). I haven't
- seen the problems that have been stated here on netland (video shifted, black
- screens, etc.). So far the system has been rock solid, and I am very excited
- about using my new toy.
-
- Dean Paul Karpowicz
- chinaski@csd4.csd.uwm.edu
-
- ---
-
- Daniel Barrett, Moderator, comp.sys.amiga.reviews
- Send reviews to: amiga-reviews-submissions@math.uh.edu
- Request information: amiga-reviews-requests@math.uh.edu
- Moderator mail: amiga-reviews@math.uh.edu
-