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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: orange on April 21, 2008, 01:07:51 PM

Title: 'alien' RAM chips in Amiga
Post by: orange on April 21, 2008, 01:07:51 PM

Could these be used in any Amiga hardware?
(bottom one is from PC VGA card)



(http://www.fileden.com/files/2007/6/28/1218776/Amiga/up_IMG_1190.jpg)


(http://www.fileden.com/files/2007/6/28/1218776/Amiga/up_IMG_1191.jpg)

Title: Re: 'alien' RAM chips in Amiga
Post by: Chain on April 21, 2008, 01:28:01 PM

256Kx1 are used in some ram cards iirc

A2052 in example

Title: Re: 'alien' RAM chips in Amiga
Post by: Ilwrath on April 21, 2008, 02:03:42 PM

Well, theoretically, as stated, there are some very old RAM cards they could work in.  A 256k*1 chip isn't very useful, though.  It takes 8 of them to make one complete 256k module, and 24 to make a single MB.  You're probably better off to make keychains out of them, sell those, and then use the money to buy a more current RAM expansion.   :lol:

Title: Re: 'alien' RAM chips in Amiga
Post by: orange on April 21, 2008, 02:34:24 PM

thanks.

Hmm, I do have one dead A501 (16 chips version), maybe it could be repaired with new chips. Wish old ones were socketed.

Title: Re: 'alien' RAM chips in Amiga
Post by: Kronos on April 21, 2008, 02:54:54 PM

@Ilwrath

Quote

Ilwrath wrote:
Well, theoretically, as stated, there are some very old RAM cards they could work in.  A 256k*1 chip isn't very useful, though.  It takes 8 of them to make one complete 256k module, and 24 to make a single MB.  You're probably better off to make keychains out of them, sell those, and then use the money to buy a more current RAM expansion.   :lol:

Let me guess, you did NOT study math ? *daffy duck*

Title: Re: 'alien' RAM chips in Amiga
Post by: jorkany on April 21, 2008, 03:38:32 PM

Kronos,
The "256" on these chips refers to 256k BITS. llwrsath's math is correct.

Title: Re: 'alien' RAM chips in Amiga
Post by: Kronos on April 21, 2008, 03:50:01 PM

@jorkany

Ah, another A-student I assume  :-D

(Hint: 8*4 aint 24)

Title: Re: 'alien' RAM chips in Amiga
Post by: Ilwrath on April 21, 2008, 03:52:25 PM

@ Kronos - ROFLMAO!

Quote

llwrsath's math is correct.

No, it's not.   :lol:

Quote

It takes 8 of them to make one complete 256k module, and 24 to make a single MB.

BZZZERT!  It takes 32 of them to make a single MB.  
Or I meant it takes 24 MORE of them (over the additional 8) to make a single MB.  Yeah, that's it.  (errr... sure.)

Title: Re: 'alien' RAM chips in Amiga
Post by: Chain on April 21, 2008, 05:42:22 PM

now i remember it...
ive once repaired A501 rev 5
(http://chain.3dgrafika.cz/temp/a501rev5.jpg)

guess which chip is original one?
.

.

.

.

yep, just one was working actually, ive replaced 15 of them :)

now i can tell .. its definitely NOT worth it :D

Title: Re: 'alien' RAM chips in Amiga
Post by: Daedalus on April 21, 2008, 07:52:45 PM

LOL, how did 15 of them fail and one survive? What were you doing to them? :-P

Title: Re: 'alien' RAM chips in Amiga
Post by: CLS2086 on April 21, 2008, 08:19:43 PM

U63 !

Title: Re: 'alien' RAM chips in Amiga
Post by: Hodgkinson on April 21, 2008, 08:51:24 PM

Bah, I've got some boards from some old drawer-chest sized computer (Hyperon, 1979)...

[…Snip mathematical nonsense… :-D ]

How about this?
http://www.amiga.org/gallery/index.php?n=2619=13