Data processing apparatus with self-emulation capability

摘要: A microprocessor, specially adapted for graphics processing applications, and which has a self-emulation capability by the contents of its internal registers may be dumped or loaded to from external memory on an instruction-by-instruction basis, is disclosed. The microprocessor circuitry responsive emulate enable signal, predetermined instruction code, so that normal execution halted at end ion, with jumping vector. Responsive dump begins routine presents series addresses bus, in conjunction microprocessor. Accordingly, addressed locations device connected bus can written register contents, subsequent interrogation user. Similarly, instead load command, executed loads data values presented bus. feature similarly utilized user's loading desired registers. system containing constructed according invention configured signal generated control signals upon each fetch memory.