Hi, > I thought of that, but the only way to test this is write some unique value > into each bank and then read it back. This has the unfortunate consequence > of trashing main memory at $4000 if the extended memory is not there. Same game on the Apple II: One needs to save the value in main memory and restore it after testing. The bigger issue is that you have to do this testing again from a "safe place" like the CPU stack - while trying to keep the test code small (ideally not larger than the copy routine discussed before). Regards, Oliver ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo@musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.Received on Sun Aug 12 20:58:11 2012
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