Opry99er Posted December 18, 2015 Author Share Posted December 18, 2015 (edited) Brown interrupt wire connected or disconnected for CFHDX serial hookup? I am assuming 'connected...' Edited December 18, 2015 by Opry99er Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted December 18, 2015 Share Posted December 18, 2015 Brown interrupt wire connected or disconnected for CFHDX serial hookup? I am assuming 'connected...' It shouldn't matter. But connected is always going to work with any software.. unconnected only for reloading the DSR when it's corrupted. Quote Link to comment Share on other sites More sharing options...
Fritz442 Posted February 4, 2018 Share Posted February 4, 2018 (edited) If you want to use just a rom you would just burn one and replace the rom with it. (pin compatible?) Imho that would remove upgrading capability but add stability and require no hardware extra except to make the pins compatible with the rom. A few pins would need to change to switch to ROM. You could probably do that easiest by using a properly cross-wired pair of sockets--that way the mod would be reversible. Can anyone be a little more specific on which pins would need to be changed/switched? And you would still need a 2764 8k rom correct? Edited February 4, 2018 by Fritz442 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted February 5, 2018 Share Posted February 5, 2018 I'd have to look at the two chip types to suss out the specific pins. I'll try and look at that this weekend when I have some hobby time. . . 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 5, 2018 Share Posted February 5, 2018 why when theirry already did: http://www.unige.ch/medecine/nouspikel/ti99/eeproms.htm 1 Quote Link to comment Share on other sites More sharing options...
Fritz442 Posted February 6, 2018 Share Posted February 6, 2018 (edited) Yes that is a very good read, but I believe the HDX daughter board is already changing/switching some of the pins to go from 4k ROM to 8k RAM chip. I'm trying to replace the '8k static ram' to a '8k eprom' and I'm just not sure what I need to change. Edited February 6, 2018 by Fritz442 Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.