=== Illegal instructions ===
Opcodes A lot of these illegal instructions involve a bitwise AND operation, which is a side effect of the open-drain behavior of NMOS logic. When two instructions put a value on the bus at the same time, this creates a bus conflict resulting effectively in red are unstablean AND operation. The lower voltage wins because transistors can pull down stronger than resistors can pull up.
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A lot of these illegal instructions involve a bitwise AND operation, which is a side effect of the open-drain behavior of NMOS logic. When two instructions put a value on the bus at the same time, this creates a bus conflict resulting effectively Opcodes in an AND operation. The lower voltage wins because transistors can pull down stronger than resistors can pull upred are unstable.
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