Microprocessor
HLDA signal in 8085 performs the following operation:

 Hold the data in the accumulator until the microprocessor is turned OFF.
 Indicates that the CPU has not received the HOLD request.
 Indicates that another master is requesting the use of the address and data buses.
 Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle.

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Microprocessor
A high on RESET OUT signifies that

 all the registers and counters are being reset and this signal can be used to reset external support chip
 all the registers and counters are being reset
 all the registers of the CPU are being reset
 processing can begin when this signal goes high

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Microprocessor
When .9432 E – 4 is subtracted from .5452 E – 3 in normalized floating point mode

Both Ihe numbers are changed and their exponents are, made equal to -5
.5452 E – 3 is changed to 5.452 E – 4 but .9432 E – 4 is not changed
None of the numbers is changed
.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed

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