Tezz Posted February 4, 2015 Share Posted February 4, 2015 Guys what's the method for switching the OS on and off with an OS B machine? I rarely touch the OS but I can't remember the info regarding portb rather than the XL/XE OS #$fe / #$ff writes. I need to switch off the os rom to have a custom nmi at certain times. thanks. Quote Link to comment Share on other sites More sharing options...
Bryan Posted February 4, 2015 Share Posted February 4, 2015 OS B? You mean a 400/800? The ability to switch off ROM was added in the 1200XL. Quote Link to comment Share on other sites More sharing options...
Tezz Posted February 4, 2015 Author Share Posted February 4, 2015 Yea for the 400/800. So there's no way to switch off the OS ROM? Quote Link to comment Share on other sites More sharing options...
Xuel Posted February 4, 2015 Share Posted February 4, 2015 Not unless you get an Incognito. Quote Link to comment Share on other sites More sharing options...
Tezz Posted February 4, 2015 Author Share Posted February 4, 2015 ok thanks Bryan/Lyren Quote Link to comment Share on other sites More sharing options...
+JAC! Posted February 4, 2015 Share Posted February 4, 2015 >So there's no way to switch off the OS ROM? Well, and if it would be there, you'd only find emptiness instead of RAM :-) Quote Link to comment Share on other sites More sharing options...
Creature XL Posted February 5, 2015 Share Posted February 5, 2015 (edited) >So there's no way to switch off the OS ROM? Well, and if it would be there, you'd only find emptiness instead of RAM :-) I bet guys like you can do useful things with 12kb of zeros addressable linearly EDIT: Peter, if you ever decide to take another job in Hannover we would have quite an awesome team here Edited February 5, 2015 by Creature XL Quote Link to comment Share on other sites More sharing options...
Bryan Posted February 5, 2015 Share Posted February 5, 2015 Well... there is a way to switch off the OS, but it involves taking the lid off the 800. Quote Link to comment Share on other sites More sharing options...
+JAC! Posted February 5, 2015 Share Posted February 5, 2015 >I bet guys like you can do useful things with 12kb of zeros addressable linearly In fact they would probably rather be one, or even more likely random floating bits. >we would have quite an awesome team here Not sure why you immediately relate a sequence of zeroes with you and me :-) Quote Link to comment Share on other sites More sharing options...
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