Does the op code parity bit cover just the op-code field, or the entire instruction word? What happens in the case of a parity error?
A. The parity bit covers the entire instruction code word, not just the op-code field. Note that the parity is odd. If the BC fetches an instruction with a parity error, an erroneous op code and/or one of the “fixed value” bits (bits 9-5) is the wrong value, then the BC will trap out (halt), and the BC OP CODE PARITY ERROR interrupt will be issued, if enabled.
Related Questions
- When searching for a word in the source code (using the "find" field), the required word appears highlighted in red or in pink. Is there a code of color for the highlighting?
- Does the op code parity bit cover just the op-code field, or the entire instruction word? What happens in the case of a parity error?
- What can cause the Higgs field to exist in a way that it can cover the entire universe?
