If ACPI hardware was detected, why won't it say "Ends your session, shuts down Windows, and then turns off power/your computer." as in Windows Vista and later?
The 6502 has three indirect addressing modes: Indirect, Indexed Indirect (Indirect,X) and Indirect Indexed (Indirect,Y). Indirect is only used on the JMP instruction, no other. Why was this mode limited to only JMP, rather than being more generally available? It seems very useful, for example,...