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Exception Prefix High (EPH) control bit of the Supervision Register (SR). The significant bits (31-12) of the vector offset address for each exception depend on the setting of the Supervision Register (SR)'s EPH bit and the Exception Vector Base Address Register (EVBAR). If SR[EPH] is set, the vector offset is logically ORed with the offset 0xF0000000. This means if EPH is; * 0 - Exceptions vectors start at EVBAR * 1 - Exception vectors start at EVBAR | 0xF0000000 Signed-off-by: Tim 'mithro' Ansell <mithro@mithis.com> Signed-off-by: Stafford Horne <shorne@gmail.com> |
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