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[return to "Extra Instructions Of The 65XX Series CPU (1996)"]
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1. djmips+i81
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2025-12-06 14:40:11
>>embedd+(OP)
a good essay on how they work
https://www.pagetable.com/?p=39
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2. Scaevo+uH2
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2025-12-07 06:46:41
>>djmips+i81
He went even farther, decapping the CPU and reverse engineering its entire workings to understand how each "undocumented" opcode functioned:
https://www.pagetable.com/?p=517
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