PPT Slide
CRA-1 Memory
- Memory address space is from absolute address 0 to absolute address 0xEFFF FFFF
- I/O address space is from abs 0xF000 0000 to 0xFFFF FFFF
- Consider the machine to only have 16 MB, in which case memory address is limited to abs addresses 0 to 0xFF FFFF
CRA-1 Interrupt Structure
- An interrupt is an immediate asynchronous transfer of control caused by an event external to the CPU