It is a general-purpose flag bit available for user applications

(a)  

When adding binary-coded-decimal (BCD) values, it ) is set if a carry was generated out of bit 3 into bit 4 or if the result in the lower nibble is in the range 0AH-0FH.

(a)  

An instruction that sets the IDL bit will be the last instruction executed before entering idle mode.

(a)  

It is automatically set or cleared each machine cycle to establish even parity with the accumulator.

(a)  

This is needed on the input characteristics of the device driven by the port pin.

(a)  

What value must the port latch contains?

(a)  

Which port does the pull-up resistor is not present?

(a)  

The ---- is four low-power Schottky TTL loads for Ports 3, 2, and 1; and eight LS loads for Port 0

(a)  

An instruction that sets the PD bit will be the last instruction executed before entering power down mode.

(a)  

It is an 8-bit register at address 81H

(a)  

In DIV AB instruction, which register would the Remainder be saved?

(a)  

What is the address of SP register?

(a)  

What is the address of B register?

(a)  

What is the address of the low-byte of data pointer?

(a)  

What register has the address of 88H?

(a)  

The (a)   is set through the interrupt priority register (IP) at address 0B8H.

What is the instruction for turning on the port 2 bit 3?

(a)  

What is the instruction for turning off the port 1 bit 2?

(a)  

Internal registers on most microprocessors are accessed implicitly by the instruction set.

(a)  

determine the active register bank. They are cleared after a system reset and are changed by software as needed.

(a)  

internal registers are configured as part of the on-chip RAM: therefore, each register also has an address.

(a)  

is set after an addition or subtraction operation if there was an arithmetic overflow.

(a)  

instructions are grouped together in Appendix A

(a)  

divides the accumulator by the data in the B register, leaving the 8-bit quotient in the accumulator and the 8-bit remainder in the B register.

(a)  

instruction multiplies the accumulator by the data in the B register and puts the 16-bit product into the concatenated B (high-byte) and accumulator (low-byte) registers.

(a)