[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

2757.0. "A2000 being too slow !?!?" by EEMELI::LINDEN () Mon Jul 24 1989 03:05

    I'm having an odd problem with my A2000-A, somehow it is just 10-20%
    slower when compared against A500 or A1000.
    
    This the configuration of my system:
    
    A2000 model A
    1.5 Mbytes of RAM (.5 of them is 100nS others 150nS)
    second internal diskdrive
    CMI 14MHz PA attached to use FAST ROM and 14MHz(tested with and without !)
    
    I had 2 months ago also an wierd problem that A2000's clock just moved
    5 times faster than normal, that I got fixed and the problem was in my
    monitor.
    
    The reason why I haven't discovered this speed reduction is that I
    didn't got any benchmark programs that could get the results.
    
    But now I have converted an Benchmark done in Turbo-Pascal to MCC
    Pascal , it provides 9 tests an gives single and total test times.
    
    So if anyone has had same symptoms ( ie. A2000 being too slow ) then if
    you could be kind enough to let me know !
    
    - Kari

T.R	Title	User	Personal Name	Date	Lines
2757.1	Wait States...	FROCKY::BALZER	Christian Balzer DTN:785-1029	`Mon Jul 24 1989 03:32`	5
	If I remember correctly, the RAM board in the CPU slot on the A2000 inserted quite a number of wait states. This could be it. <CB>
2757.2	Why me ....	EEMELI::LINDEN		`Mon Jul 24 1989 04:28`	7
	>If I remember correctly, the RAM board in the CPU slot on the A2000 >inserted quite a number of wait states. This could be it. If so can I do anything to speed up the RAM board ??? I'm hoping not to remove the RAM board because I need everybit of it. -Kari
2757.3	That's Murphy...	FROCKY::BALZER	Christian Balzer DTN:785-1029	`Mon Jul 24 1989 04:56`	13
	Re: .2 I really don't wanna put you down, but the best thing you could do is to get rid of the A2000 and get a B2000. Besides giving you 1MB of chip mem (or at least the possibility to upgrade), it doesn't have this slow "fast" mem, and you can plug in an A2620 without compromises, etc... I'll check if there is something you can do to the board, I remember vaguely some fixes... <CB>
2757.4	Yup that's truly Murphy again ...	EEMELI::LINDEN		`Mon Jul 24 1989 06:28`	10
	The IDEA of getting rid of my A2000 ain't pleasent because it is just 4 months old... but if that is the only way then I must do it..aaarrgh But if you can find any methods decreasing the wait-states I'd preciate the available information !!! Why I have an feeling that the world is against me ... Thanks again -Kari
2757.5	Or buy or memory...	TLE::RMEYERS	Randy Meyers	`Mon Jul 24 1989 14:48`	12
	Re: .* If the slow down is caused by the model A memory board inserting wait states, then one way around the problem is to buy a two or eight meg expansion slot memory board. As long as the 68000 is accessing the expansion memory board, it will not slow down. You could run SlowMemLast or FastMemFirst (or whatever that program is called) to make sure that the system always tries to allocate memory from the expansion board before using the old-memory-expansion-in-the-processor slot board. (In case it wasn't obvious from the above, you can keep both boards, the old and the new, in the machine.)