You're currently viewing posts by Pinsider G-P-E.
Click here to go back to viewing the entire thread.
Ok, I'm confused.
Looking at jumpers - J4 and J5 both allude to RAM at U27 and U28. Allows for four configs of RAM: None, 128K, 256K, 512K
But - you have 64K RAM at U36(?) and you have an EPROM at U27.
Where is U28? What is there? Or is it a typo and U36 is U28? Or is U28 off to the left of the photo?
What do the instructions say?
You're currently viewing posts by Pinsider G-P-E.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/rottendog-mpu004-nvram-question?tu=G-P-E and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Omaha, NE