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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

3294.0. "Chips for 8-UP" by JGO::CHAPMAN () Fri Jan 05 1990 10:56

    I've seen an advert in a UK magazine for an 8-UP board, populated
    to 2 meg, for 295 pounds. A pretty good price, miles cheaper than
    anywhere else in Europe, and comparable with US once the dreaded
    VAT is taken into account. The supplier is Diamond Computers. 
    
    But I've also read somewhere that one way the price is cut is by
    importing bare boards and filling them with cheaper (slower?) memory
    chips. What chips are recommended for use in this board?
                                      
    Thanks 
    
    Colin

T.R Title User Personal
Name Date Lines

3294.1 150ns or faster TLE::RMEYERS Randy Meyers Fri Jan 05 1990 13:50 15

T.R	Title	User	Personal Name	Date	Lines
3294.1	150ns or faster	TLE::RMEYERS	Randy Meyers	`Fri Jan 05 1990 13:50`	15
	Re: .0 Any reasonably-designed Amiga memory board (except 32 bit memory boards) will work with 150ns or faster parts. I believe that the slowest 1 meg by 1 memory chip made is 120ns, and that these days the bulk of 1 meg by 1 memory chips are in the 100ns or faster category. So, it's very unlikely that there is anything wrong with the memory chips being installed by Diamond Computers. Awhile back, someone posted an article to comp.sys.amiga that claimed that Amiga memory boards were unreliable if 150ns chips were used in them (I think someone even posted that article to this notesfile). Dave Haynie (the designer of the 2000) toasted the guy: Haynie pointed out that the system was designed to take 150ns parts, and that the memory on the motherboard of the Amiga was 150ns parts.

Re: .0

Any reasonably-designed Amiga memory board (except 32 bit memory boards)
will work with 150ns or faster parts.  I believe that the slowest 1 meg
by 1 memory chip made is 120ns, and that these days the bulk of 1 meg by
1 memory chips are in the 100ns or faster category.  So, it's very unlikely
that there is anything wrong with the memory chips being installed by
Diamond Computers.

Awhile back, someone posted an article to comp.sys.amiga that claimed
that Amiga memory boards were unreliable if 150ns chips were used in them
(I think someone even posted that article to this notesfile).  Dave
Haynie (the designer of the 2000) toasted the guy:  Haynie pointed out
that the system was designed to take 150ns parts, and that the memory on
the motherboard of the Amiga was 150ns parts.