Image Map Image Map
Results 1 to 4 of 4

Thread: RLX 1000 RAM Expansion - Please Help

  1. #1

    Default RLX 1000 RAM Expansion - Please Help

    I made a post back in January regarding the RAM upgrade for the RLX 1000 - an upgrade kit containing four ZIP chips was once sold separately, but I can't find either the kit or any details as to what components were included. All I've ascertained is that the chips were 256k x 4, 100 ns DRAM. The closest thing I've found so far would be these:

    http://www.datasheets360.com/pdf/-8005335426745156012

    Do you think these might work, or at least is there any harm in trying? I'm willing to take a gamble but I don't want to risk damaging the machine.
    I really want to upgrade my RLX so I can convert some old files. If anyone can give me some info - even pull the cover off their RLX-B and give me the part numbers on those four chips - I'd really appreciate it.
    Thanks.

  2. #2

    Default

    I think any 256x4 100ns or faster ZIP chips will work in the RLX. These were cheap enough I ordered a few sets to test myself: https://www.ebay.com/itm/391306884244

  3. #3

    Default

    Those are the exact ones I was thinking of ordering, thanks for the tip and do let me know how you make out.

  4. #4

    Default

    Those MICRON MT4C4256Z-7's from eBay worked fine. The RLX-B Non-HD I tested them in had already been upgraded with TI TMS44C256-80SD's but they seem to be non-existent now. Larger pictures here: https://imgur.com/a/ByVSc


    Last edited by dlightman; December 6th, 2017 at 08:10 PM.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •