Homework 02 - Representation of Numbers / ASCII 200 pts total 1. 10pts: Use an ASCII table to figure out what letter decimal 65 (or 97) is from homework 1. It is the last line in the MARIE program. 2. 40pts: Convert the string "howalive" into hex using an ASCII table. Remember to include the 110 terminator at the end. With 1 character on each line put this into a list of HEX specifications for our MARIE assembler. Use the command line to assemble the result and turn in the .hex file. How much storage was used for the string (how many bytes/words?) Prepend the program below and run it. Show the output. (You can also do this with the on-line web based assembler/emulator) 3. 20pts: Convert the number 4313 decimal into octal, binary and hex. 4. 20pts: Convert the number ob_0110_1001_1100_0001 into decimal. The are for the human - the number is in binary. 5. 10pts: Use an octal dump to dump the file hw2.bin. (On Linux and Mac there is an 'od' command. On windows download the 'od.exe' using chocolatie) H:\> choco install gnuwin32-coreutils. install You will also need to download hw2.bin 6. 30pts: Subtract from -22 (decimal) the value -12 (decimal) using signed arithmetic - Choose 1s or 2s complement for your representation of the negative numbers (p74 and p76) in the book. Show every step of your work. Assume that you are on an 8 bit computer. 7.30pts: Implement a C program (or C++, Python 3.x, Go, Haskell, F#, Swift, Kotlin) to calculate the Hamming Distance between 19 and 23. Turn in your code and the results. In C/C++/Go use unsigned integers. Remember to put in comment with your name so you get the grade for the code. Perform the calculation by hand to verify your results from the code. Show your work. 8. 20pts: Using 2's compliment calculate 41 - 18. Show your work in binary. 9. 10pts: Explain how you would multiply 2 numbers together when you only have an Add , Subt, Load, Store, SkipGto, Jump, Output instructions to work with? 10. 10pts: Find the Unicode representation for the divide symbol. This is a symbol that looks like a minus with a colon over the top of it. (Use google to lookup unicode and find the hex representation for the symbol. Code for (2) above This uses the extended instruction set specified on p257 of the book. L1, LoadIX Output Load Add / OnLine use Skipins 0x400 - same instruction just different / Counter of how many characters to output. Store Loadi Skip to Jump L1 Halt ORG 20 DEC 22 DEC 1 HEX 48 HEX 49 HEX 50 HEX 51 HEX 52 HEX 53 HEX 54 HEX 55 HEX 56 HEXO / 'H' Your values (clue: 48 is not correct for homework-02!) / 'I' / P Homework 02 - Representation of Numbers / ASCII 200 pts total 1. 10pts: Use an ASCII table to figure out what letter decimal 65 (or 97) is from homework 1. It is the last line in the MARIE program. 2. 40pts: Convert the string "howalive" into hex using an ASCII table. Remember to include the 110 terminator at the end. With 1 character on each line put this into a list of HEX specifications for our MARIE assembler. Use the command line to assemble the result and turn in the .hex file. How much storage was used for the string (how many bytes/words?) Prepend the program below and run it. Show the output. (You can also do this with the on-line web based assembler/emulator) 3. 20pts: Convert the number 4313 decimal into octal, binary and hex. 4. 20pts: Convert the number ob_0110_1001_1100_0001 into decimal. The are for the human - the number is in binary. 5. 10pts: Use an octal dump to dump the file hw2.bin. (On Linux and Mac there is an 'od' command. On windows download the 'od.exe' using chocolatie) H:\> choco install gnuwin32-coreutils. install You will also need to download hw2.bin 6. 30pts: Subtract from -22 (decimal) the value -12 (decimal) using signed arithmetic - Choose 1s or 2s complement for your representation of the negative numbers (p74 and p76) in the book. Show every step of your work. Assume that you are on an 8 bit computer. 7.30pts: Implement a C program (or C++, Python 3.x, Go, Haskell, F#, Swift, Kotlin) to calculate the Hamming Distance between 19 and 23. Turn in your code and the results. In C/C++/Go use unsigned integers. Remember to put in comment with your name so you get the grade for the code. Perform the calculation by hand to verify your results from the code. Show your work. 8. 20pts: Using 2's compliment calculate 41 - 18. Show your work in binary. 9. 10pts: Explain how you would multiply 2 numbers together when you only have an Add , Subt, Load, Store, SkipGto, Jump, Output instructions to work with? 10. 10pts: Find the Unicode representation for the divide symbol. This is a symbol that looks like a minus with a colon over the top of it. (Use google to lookup unicode and find the hex representation for the symbol. Code for (2) above This uses the extended instruction set specified on p257 of the book. L1, LoadIX Output Load Add / OnLine use Skipins 0x400 - same instruction just different / Counter of how many characters to output. Store Loadi Skip to Jump L1 Halt ORG 20 DEC 22 DEC 1 HEX 48 HEX 49 HEX 50 HEX 51 HEX 52 HEX 53 HEX 54 HEX 55 HEX 56 HEXO / 'H' Your values (clue: 48 is not correct for homework-02!) / 'I' / P