4MB Upgrade in 520STfm C070523 001 Rev D

Upgrade your RAM from ST to Falcon.
Post Reply
megalith
Posts: 2
Joined: Tue Aug 31, 2021 3:24 pm

4MB Upgrade in 520STfm C070523 001 Rev D

Post by megalith »

Hi,

I have a stock 520STfm with 512K. I started doing the 4MB upgrade, following the instructions for this particular model. However, when it came time to disable the RAM for testing, I kind of got lost. After searching, re-reading, etc, I have still come up empty.

I have two questions -

What do I do to disable the RAM so I can test?
What do I remove/modify afterward to make the change perm?

Thanks!!

unnamed-2.jpg
unnamed-2.jpg (982.45 KiB) Viewed 1422 times
User avatar
exxos
Site Admin
Site Admin
Posts: 23499
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: 4MB Upgrade in 520STfm C070523 001 Rev D

Post by exxos »

Same question here.

https://www.exxosforum.co.uk/forum/viewt ... =10#p48495


If you can take some good shots, I can upload them on my website for others :)
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Post Reply

Return to “RAM UPGRADES”