base:detecting_6526_vs_6526a_cia_chips
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base:detecting_6526_vs_6526a_cia_chips [2015-04-17 04:31] – external edit 127.0.0.1 | base:detecting_6526_vs_6526a_cia_chips [2017-10-26 07:18] – white_flame | ||
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====== Detecting 6526 vs 6526A CIA Chips ====== | ====== Detecting 6526 vs 6526A CIA Chips ====== | ||
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+ | by White Flame | ||
This sets off a single-shot NMI to interrupt immediately before an INC statement. | This sets off a single-shot NMI to interrupt immediately before an INC statement. | ||
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pla | pla | ||
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- | White Flame (aka David Holz)\\ | + | |
- | http:// | + | |
Note by Karoshier: I had problems making this work once adapted to use CIA1 instead of CIA2, as the interrupt wouldn' | Note by Karoshier: I had problems making this work once adapted to use CIA1 instead of CIA2, as the interrupt wouldn' |
base/detecting_6526_vs_6526a_cia_chips.txt · Last modified: 2018-02-24 10:33 by tww_ctr