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Amiga computer related discussion => Amiga Marketplace => Topic started by: masteries on May 23, 2018, 12:45:39 PM
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Greetings,
During these past times I was developing a workaround in order to use the remaining memory chips from an accelerated Atari ST project. This project requires a change on installed memory due to memory acceses are totally upgraded, new memory chips were used.
Now, these memory chips are used for an Amiga 500 chip RAM expansion, its a 512 KB trapdoor memory expansion.
The results are these:
(https://preview.ibb.co/mDU4o8/ara.jpg)
(https://preview.ibb.co/dRqr1T/SAM_2671.jpg)
and the working results are these:
(https://preview.ibb.co/itaxao/SAM_2667.jpg)
For Amiga 500+
(https://preview.ibb.co/jsOuMT/SAM_2669.jpg)
For Amiga 500
(https://preview.ibb.co/cZX4MT/20180520_20.jpg)
(https://preview.ibb.co/kh9Uo8/20180520_204.jpg)
(https://preview.ibb.co/chS4MT/20180520_2048.jpg)
I manufactured several of these, available at supermarket; these memory modules are hand manufactured at my home in Spain (http://www.lemonamiga.com/forum/images/smiles/icon_smile.gif) and tested prior to be sent. These are sent on tracked packages also for international destinations.
The module includes short-circuit protection resistances and enable/disable switch.
Memory tests passed to the trapdoor memories,
Memory Test program:
(https://preview.ibb.co/d2Dtsp/Memtest.jpg)
Starting the test with a 512 KB trapdoor installed:
(https://preview.ibb.co/mbv6Cp/512_KB_start.jpg)
1.5 MB test:
(https://preview.ibb.co/g4KoQ9/512_KB_End.jpg)
Price is 21€ per unit (around 24.6 $ USD ); Spain tracked package cost 4€ and Intenational tracked cost 6.1 €
Original design post (Spanish) is:
https://www.gp32spain.com/foros/showthread.php?160981-Proyecto-La-Memorias-del-Pasado-Amiga-500-500 (https://www.gp32spain.com/foros/showthread.php?160981-Proyecto-La-Memorias-del-Pasado-Amiga-500-500)
Its also listed on ebay, but certainly an ebay sell produce -2.1 € (http://www.lemonamiga.com/forum/images/smiles/icon_razz.gif)
https://www.ebay.es/itm/273213007014?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 (https://www.ebay.es/itm/273213007014?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649)
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Updated the first post with the results of a memory test program,
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Up! There are units available!
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Up!
Customers experience at:
http://www.va-de-retro.com/foros/viewtopic.php?f=50&t=7107&p=133905#p133905
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Up!
There are available units!