Figure 6-36.Hardwired magnetic ROM.
For ROM operations to take place, the following
3. The ROM address is selected.
events generally take place in the following order:
1. ROM is either selected on the computers front
panel or equivalent of a computer; or the
computer is turned on and it is part of the start
2. The ROM address is translated.
The contents of the ROM address are sent to a
designated register for transfer to the instruction
The instruction is sent to the instruction register
The instruction is executed.
Figure 6-37.MOS ROM.