this is my code : it is supposed to print "CS 220" on the screen of the Nand2Tetris screen which loads code onto the ROM and utilizes the CPU Emulator: However, it is not working. // Built-in constant in Assembly // @SCREEN // A=16384// D=A // Let's say we start at address 16640 (this is where our text will be placed)@16640D=A // D = 16640 (starting address for text)@addressM=D // store starting address in 'address' variable // Loop 48 times (arbitrary number, feel free to adjust as needed)@countM=0 // initialize the count to 0 (LOOP)@48D=A // D = 48@countD=M-D // D = count - 48@ENDLOOPD;JGE // if count >= 48, jump to ENDLOOP // Place character 'C' (ASCII 67) at current address@67D=A // D = 67 (ASCII value for 'C')@addressA=M // A = current addressM=D // Store 'C' at the current address // Move to the next memory location (increment by 1)@addressM=M+1 // Increment address by 1 // Place character 'S' (ASCII 83)@83D=A // D = 83 (ASCII value for 'S')@addressA=M // A = current addressM=D // Store 'S' at the current address // Move to the next memory location@addressM=M+1 // Increment address by 1 // Place space character ' ' (ASCII 32)@32D=A // D = 32 (ASCII value for space)@addressA=M // A = current addressM=D // Store space at the current address // Move to the next memory location@addressM=M+1 // Increment address by 1 // Place character '2' (ASCII 50)@50D=A // D = 50 (ASCII value for '2')@addressA=M // A = current addressM=D // Store '2' at the current address // Move to the next memory location@addressM=M+1 // Increment address by 1 // Place another '2' (ASCII 50)@50D=A // D = 50 (ASCII value for '2')@addressA=M // A = current addressM=D // Store '2' at the current address // Move to the next memory location@addressM=M+1 // Increment address by 1 // Place character '0' (ASCII 48)@48D=A // D = 48 (ASCII value for '0')@addressA=M // A = current addressM=D // Store '0' at the current address // End of program, prevent further operations@END0;JMP (END) //==================================================================================== Please fix it
this is my code :
it is supposed to print "CS 220"
on the screen of the Nand2Tetris screen which loads code onto the ROM and utilizes the CPU Emulator:
However, it is not working.
// Built-in constant in Assembly
// @SCREEN // A=16384
// D=A
// Let's say we start at address 16640 (this is where our text will be placed)
@16640
D=A // D = 16640 (starting address for text)
@address
M=D // store starting address in 'address' variable
// Loop 48 times (arbitrary number, feel free to adjust as needed)
@count
M=0 // initialize the count to 0
(LOOP)
@48
D=A // D = 48
@count
D=M-D // D = count - 48
@ENDLOOP
D;JGE // if count >= 48, jump to ENDLOOP
// Place character 'C' (ASCII 67) at current address
@67
D=A // D = 67 (ASCII value for 'C')
@address
A=M // A = current address
M=D // Store 'C' at the current address
// Move to the next memory location (increment by 1)
@address
M=M+1 // Increment address by 1
// Place character 'S' (ASCII 83)
@83
D=A // D = 83 (ASCII value for 'S')
@address
A=M // A = current address
M=D // Store 'S' at the current address
// Move to the next memory location
@address
M=M+1 // Increment address by 1
// Place space character ' ' (ASCII 32)
@32
D=A // D = 32 (ASCII value for space)
@address
A=M // A = current address
M=D // Store space at the current address
// Move to the next memory location
@address
M=M+1 // Increment address by 1
// Place character '2' (ASCII 50)
@50
D=A // D = 50 (ASCII value for '2')
@address
A=M // A = current address
M=D // Store '2' at the current address
// Move to the next memory location
@address
M=M+1 // Increment address by 1
// Place another '2' (ASCII 50)
@50
D=A // D = 50 (ASCII value for '2')
@address
A=M // A = current address
M=D // Store '2' at the current address
// Move to the next memory location
@address
M=M+1 // Increment address by 1
// Place character '0' (ASCII 48)
@48
D=A // D = 48 (ASCII value for '0')
@address
A=M // A = current address
M=D // Store '0' at the current address
// End of program, prevent further operations
@END
0;JMP
(END)
//====================================================================================
Please fix it
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