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- Newsgroups: comp.sys.amiga.reviews
- Path: menudo.uh.edu!usenet
- From: jts@krk.FI (Janne Siren)
- Subject: REVIEW: Amiga Accelerator System (68000) 14MHz Hack
- Message-ID: <1992Sep21.211616.11530@menudo.uh.edu>
- Followup-To: comp.sys.amiga.hardware
- Keywords: hardware, accelerator, hack, shareware
- Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
- Nntp-Posting-Host: karazm.math.uh.edu
- Reply-To: jts@krk.FI (Janne Siren)
- Organization: The Amiga Online Review Column - ed. Daniel Barrett
- Date: Mon, 21 Sep 1992 21:16:16 GMT
-
-
-
- PRODUCT NAME
-
- Amiga Accelerator System: (68000) 14MHz Hack
- Version 4.0, 10/03/1992
-
- BRIEF DESCRIPTION
-
- Accelerating your Amiga isn't cheap. Even small accelerators like
- AdSpeed, running a 68000 at 14MHz, might just be too much for your
- wallet. How about building one by yourself?
-
- Livio Plos and Joerg Richter have one answer to the problem: they
- have released building instructions for a simple 14MHz accelerator
- to the public as shareware.
-
- AUTHOR/COMPANY INFORMATION
-
- Name: Livio Plos
- Address: via Amalteo 15
- 33170 Pordenone
- Italy
- Internet: livio@alessia.dei.unipd.it
-
- Name: Joerg Richter
- Address: Dresdener Strasse 21
- 2150 Buxtehude
- Germany
- Internet: Joerg.Richter@arbi.informatik.uni-oldenburg.de
-
- LIST PRICE
-
- Shareware fee: US $15
- PCB and fee: US $30
- Components: US $40 (approximately)
- All in one: US $70 (approximately)
-
- SPECIAL HARDWARE AND SOFTWARE REQUIREMENTS
-
- HARDWARE
-
- None, but FAST memory is heavily recommend for best speed results.
-
- SOFTWARE
-
- None.
-
- COPY PROTECTION
-
- None.
-
- REVIEW
-
- The accelerator I'm testing was built by a friend of mine, and it's
- based on 14MHz hack version 4.0 with a few modifications. For
- information about building such accelerator, you should obtain the
- building instructions. You should be able to download the
- distribution archive from your local BBS.
-
- The board is quite easy to install. First, remove all peripherals
- and open your machine (invalidates warranty!), and then replace the
- old processor with the accelerator board. And if you did everything
- as you should, your Amiga is now running a 68000 at 14MHz. It is
- also possible to use a 68010 processor; it's faster, but not very
- stable.
-
- The performance increase is not very much if compared to commercial
- 68020 (or faster) accelerators, but with FAST memory expansion you
- will notice the difference. There might also be some compatibility
- problems, but in general there shouldn't be any problems, because
- (running at 14MHz) only the E-Clock signal is modified a little bit
- and the CIA's of the Amiga can handle this. You can also turn the
- 14MHz mode off, even while the computer is still up and running.
-
- PERFORMANCE
-
- [Basic (7MHz) Amiga 500 with no FAST memory]
-
- SysInfo V2.70 by Nic Wilson
-
- SPEED COMPARISONS AGAINST KNOWN MODELS & PERIPHERALS
-
- A500 512k or A500 with 1MB CHIP ONLY........... 1.06
- B2000, A2000, A1000 or A500 with fast ram...... 0.80
- B2000 GVP A3001 28MHZ ALL CACHES & BURSTS..... 0.09
- A2500 A2620 68020 14MHZ card.................. 0.28
- A3000/25 SCRAM ICACHE IBURST DCACHE NODBURST... 0.12
- A3000 PP&S 68040 ICACHE DCACHE COPYBACK....... 0.02
- IBM PC/XT or compatible........................ 3.44
- CPU Million Instructions per Second............ 0.49
- FPU Million Floating Operations per Second..... N/A
- Speed of Chip Memory vs A3000 Chip Memory...... 0.21
- CIA (A) timer accuracy test ................... Passed
- If Slow/Fast, Error in Ticks per Second ....... 0
- Nic's Comment.................................. Basic Amiga
- CPU speed in MHZ............................... 7.09
-
- --
-
- [Basic (7MHz) Amiga 500 with 2 MB FAST memory]
-
- SysInfo V2.70 by Nic Wilson
-
- SPEED COMPARISONS AGAINST KNOWN MODELS & PERIPHERALS
-
- A500 512k or A500 with 1MB CHIP ONLY........... 1.30
- B2000, A2000, A1000 or A500 with fast ram...... 1.00
- B2000 GVP A3001 28MHZ ALL CACHES & BURSTS..... 0.12
- A2500 A2620 68020 14MHZ card.................. 0.34
- A3000/25 SCRAM ICACHE IBURST DCACHE NODBURST... 0.15
- A3000 PP&S 68040 ICACHE DCACHE COPYBACK....... 0.03
- IBM PC/XT or compatible........................ 4.25
- CPU Million Instructions per Second............ 0.60
- FPU Million Floating Operations per Second..... N/A
- Speed of Chip Memory vs A3000 Chip Memory...... 0.25
- CIA (A) timer accuracy test ................... Passed
- If Slow/Fast, Error in Ticks per Second ....... 0
- Nic's Comment.................................. Only Amiga...
- CPU speed in MHZ............................... 7.09
-
- --
-
- [Accelerated (14MHz) Amiga 500 with no FAST memory]
-
- SysInfo V2.70 by Nic Wilson
-
- SPEED COMPARISONS AGAINST KNOWN MODELS & PERIPHERALS
-
- A500 512k or A500 with 1MB CHIP ONLY........... 1.16
- B2000, A2000, A1000 or A500 with fast ram...... 0.88
- B2000 GVP A3001 28MHZ ALL CACHES & BURSTS..... 0.10
- A2500 A2620 68020 14MHZ card.................. 0.31
- A3000/25 SCRAM ICACHE IBURST DCACHE NODBURST... 0.13
- A3000 PP&S 68040 ICACHE DCACHE COPYBACK....... 0.03
- IBM PC/XT or compatible........................ 3.78
- CPU Million Instructions per Second............ 0.53
- FPU Million Floating Operations per Second..... N/A
- Speed of Chip Memory vs A3000 Chip Memory...... 0.29
- CIA (A) timer accuracy test ................... Passed
- If Slow/Fast, Error in Ticks per Second ....... 0
- Nic's Comment.................................. Basic Amiga
- CPU speed in MHZ............................... 11.92
-
- --
-
- [Accelerated (14MHz) Amiga 500 with 2 MB FAST memory]
-
- SysInfo V2.70 by Nic Wilson
-
- SPEED COMPARISONS AGAINST KNOWN MODELS & PERIPHERALS
-
- A500 512k or A500 with 1MB CHIP ONLY........... 1.49
- B2000, A2000, A1000 or A500 with fast ram...... 1.13
- B2000 GVP A3001 28MHZ ALL CACHES & BURSTS..... 0.13
- A2500 A2620 68020 14MHZ card.................. 0.39
- A3000/25 SCRAM ICACHE IBURST DCACHE NODBURST... 0.17
- A3000 PP&S 68040 ICACHE DCACHE COPYBACK....... 0.03
- IBM PC/XT or compatible........................ 4.85
- CPU Million Instructions per Second............ 0.69
- FPU Million Floating Operations per Second..... N/A
- Speed of Chip Memory vs A3000 Chip Memory...... 0.26
- CIA (A) timer accuracy test ................... Passed
- If Slow/Fast, Error in Ticks per Second ....... 0
- Nic's Comment.................................. Maxamundo!
- CPU speed in MHZ............................... 12.83
-
- --
-
- [Basic (7MHz) Amiga 500 with 2 MB FAST memory]
-
- CPU-Performance-Test V1.4 by J. Richter
-
- MULU/S 0.98 CMP 1.10
- DIVU/S 0.98 NOT 1.08
- ASL/R 0.98 OR 0.98
- LSL/R 0.98 EOR 0.98
- ROL/R 0.98 AND 0.98
- ADD 0.98 SWAP 0.98
- SUB 0.98 MOVE 0.98
- NEG 1.08 EXG 1.08
- CLR 1.08
-
- --
-
- [Accelerated (14MHz) Amiga 500 with 2 MB FAST memory]
-
- CPU-Performance-Test V1.4 by J. Richter
-
- MULU/S 1.65 CMP 1.42
- DIVU/S 1.81 NOT 1.41
- ASL/R 1.90 OR 1.23
- LSL/R 1.81 EOR 1.22
- ROL/R 1.90 AND 1.05
- ADD 1.22 SWAP 1.05
- SUB 1.22 MOVE 1.04
- NEG 1.42 EXG 1.42
- CLR 1.41
-
- --
-
- [Basic (7MHz) Amiga 500 with no or 2 MB FAST memory]
-
- PC-Task V1.12 (PC-Emulator) by Chris Hames
-
- CPU Benchmark Test
-
- Elapsed time in seconds . . . . . . . . . . . . 169.73
- Unable to identify CPU type
- Effective clock speed is . . . . . . . . . . . . 0.00
- Estimate MIPS at . . . . . . . . . . . . . . . . 0.02
- Times faster than original 4.77 mhz PC . . . . . 0.10
-
- (C) Copyright 1989 Visionary Software Technology, Inc. Canton, CT
-
- --
-
- [Accelerated (14MHz) Amiga 500 with no or 2 MB FAST memory]
-
- PC-Task V1.12 (PC-Emulator) by Chris Hames
-
- CPU Benchmark Test
-
- Elapsed time in seconds . . . . . . . . . . . . 145.77
- Unable to identify CPU type
- Effective clock speed is . . . . . . . . . . . . 0.00
- Estimate MIPS at . . . . . . . . . . . . . . . . 0.03
- Times faster than original 4.77 mhz PC . . . . . 0.12
-
- (C) Copyright 1989 Visionary Software Technology, Inc. Canton, CT
-
- WARRANTY
-
- None.
-
- CONCLUSIONS
-
- This hack won't increase your Amiga's performance very much, but it
- gives certain amount of boost, and won't cost you much. If you have
- the time and interest, go for it.
-
- COPYRIGHT NOTICE
-
- Copyright 1992 Janne Siren. All rights reserved.
- No warranties are made about the reliability of this review.
-
- ---
-
- Daniel Barrett, Moderator, comp.sys.amiga.reviews
- Send reviews to: amiga-reviews-submissions@math.uh.edu
- Request information: amiga-reviews-requests@math.uh.edu
- General discussion: amiga-reviews@math.uh.edu
-