Write an assembly program that receives data 15 times from port D and checks if these data are negative or positive numbers. If the data is positive, subtract it from the immediate... Write an assembly program that receives data 15 times from port D and checks if these data are negative or positive numbers. If the data is positive, subtract it from the immediate value 0xA4 and store the results in the memory locations starting at 0x40B. If the data is negative, add it to the value 0x33 and store the results in the memory locations starting at 0x1E6. The program should also count the positive numbers and send the total count to port B, and also count the negative numbers and store the total count in the memory location 0x240. Use TST instruction in your code.
Understand the Problem
The question is asking for the creation of an assembly program that processes data received from port D. It requires handling 15 data values, checking if each is positive or negative, and then performing specific actions based on that check. The results should be stored in the designated memory locations, and a count of positive and negative numbers should also be maintained.
Answer
Assembly program:
Develop the following assembly program:
Answer for screen readers
Develop the following assembly program:
More Information
This program reads from port D, processes the data based on positivity/negativity, performs necessary arithmetic operations, stores results in specific memory locations, and keeps count of positive and negative numbers.
Tips
Common mistakes include incorrect address calculations and improper use of the TST instruction. Ensure proper branching based on the TST result.
Sources
- Count of negative numbers in assembly - Stack Overflow - stackoverflow.com
