Question: 1. What is hot or live insertion and why is it so important today?
2. What is it so difficult to guarantee the absolute effectiveness of a live insertion system?
3. A manufacturer decides to produce a 68000-based personal computer. All on-board memory, interface, and peripherals are located on a single card. The designer wishes to keep the cost to an absolute minimum and decides not to include an external bus. However, the designer does wish to offer a range of add-on peripherals that do not require to take advantage of the 68000's full operating speed. Therefore. a compromise is chosen that exploits the 68000's asynchronous interface but is very cheap to implement. The proposed bus uses an 8-bit parallel interface (plus ground return paths) to take advantage of low-cost connectors. This bus uses a 4-bit control word and 4-bit data word to move data between the computer and a peripherals module. a. Design a 4-bit control bus, CO, CI , C2, C3, to control the flow of data on the 4-bit data bus. IO to 13. The control signals should permit the bus to mimic the 68000's asynchronous bus. b. For the 8-bit bus you have designed, construct a protocol flowchart and a timing diagram for both a read (word) cycle and a write (word) cycle.