l12n Posted March 4 Share Posted March 4 Does anybody know where I can find documentation on how to access memory above 64Kb in a 130 XE? I assume it's using some bank switching technique but wasn't able to find anything on the matter. Quote Link to comment Share on other sites More sharing options...
dmsc Posted March 4 Share Posted March 4 Hi! 2 minutes ago, l12n said: Does anybody know where I can find documentation on how to access memory above 64Kb in a 130 XE? I assume it's using some bank switching technique but wasn't able to find anything on the matter. The definitive guide: https://www.virtualdub.org/downloads/Altirra Hardware Reference Manual.pdf See in section 2.7. "Extended memory", at page 35. Have Fun! 2 Quote Link to comment Share on other sites More sharing options...
l12n Posted March 4 Author Share Posted March 4 Got it, thanks a lot! Quote Link to comment Share on other sites More sharing options...
TGB1718 Posted March 4 Share Posted March 4 Don't forget to turn interrupts off off before you switch the OS out to access the RAM Quote Link to comment Share on other sites More sharing options...
danwinslow Posted March 4 Share Posted March 4 If he is just using the RAM bank switching capability, he doesn't need to turn interrupts off. That only is needed, as you point out, if he also switches the OS out. Quote Link to comment Share on other sites More sharing options...
TGB1718 Posted March 4 Share Posted March 4 19 minutes ago, danwinslow said: That only is needed, as you point out, if he also switches the OS out. I sort of misread his post Quote Link to comment Share on other sites More sharing options...
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