What differences can you state between the HLT and HOLD states? - 8085
What differences can you state between the HLT and HOLD states?
-The Hold is a hardware input whereas HLT is a software instruction.
- When the HLT state is executed the processor simply stops and the buses are driven to tri state. No form of acknowledgement signal is given out by the processor.
- In case of HOLD the processor goes into hold state but the buses are not driven to tri state.
- When the processor goes into the HOLD state it gives out an HLDA signal. This signal can be made to use by other devices.