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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Iggy on July 13, 2013, 03:14:01 AM

Title: 1 megabit x 1 DRAM chips?
Post by: Iggy on July 13, 2013, 03:14:01 AM

Anyone know what the part number is for the chips needed on a SupraRAM 2000 is?

Title: Re: 1 megabit x 1 DRAM chips?
Post by: Jeff on July 13, 2013, 04:09:56 AM

Try a Google search for "1m x 1 dram dip-18" and it should yield usable results.  I think they are 41C1000-xx or 51C1000-xx where xx=dram speed. For instance a -10 should work fine with this board.

Title: Re: 1 megabit x 1 DRAM chips?
Post by: amiman99 on July 13, 2013, 05:23:51 AM

I have the chips you need, at $1 each.

I could send it cheaper then in the post below, 1st class mail at around $3 or so.

http://www.amiga.org/forums/showthread.php?t=64203

Title: Re: 1 megabit x 1 DRAM chips?
Post by: Iggy on July 13, 2013, 05:34:46 AM

Quote from: amiman99;740710

I have the chips you need, at $1 each.

I could send it cheaper then in the post below, 1st class mail at around $3 or so.

http://www.amiga.org/forums/showthread.php?t=64203

I've been told that other boards are populated with 70ns chips, the ones you are showing are 100ns.
Will they work?

Title: Re: 1 megabit x 1 DRAM chips?
Post by: amiman99 on July 13, 2013, 04:18:04 PM

I think it should work, maybe others can chime in and confirm or deny.
On my board, I just replaced them all. I had 2MB originally, now I have 8MB.

I may have other speeds too, but they are used, the 100ns ones are NEW OLD STOCK, never used.

Title: Re: 1 megabit x 1 DRAM chips?
Post by: Ral-Clan on July 13, 2013, 05:15:03 PM

I adapted surface mounted chips I already had on hand to fit the sockets.  It was a lot of work but it was (almost) free.

http://www.amiga.org/forums/showthread.php?t=64216