42 lines
845 B
ArmAsm
42 lines
845 B
ArmAsm
:start
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LOADUI R2 10 ; We will be using R2 for our counter
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;; Prep TAPE_01
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LOADUI R0 0x1100
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FOPEN_READ
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;; Main loop of more functionality
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;; Modifies R0, R1 and R2
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;; Does not utilize stack or heap
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:main
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;; Read a byte
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LOADUI R1 0x1100
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FGETC
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;; Check for EOF
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CMPSKIPI.GE R0 0
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JUMP @main_1
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;; Write the Byte
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FALSE R1
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FPUTC
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;; Check for LF
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CMPSKIPI.NE R0 10 ; Skip if not line feed
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SUBI R2 R2 1 ; Decrement on line feed
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;; Loop if not Zero
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CMPSKIPI.E R2 0 ; Skip if counter is zero
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JUMP @main
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;; Otherwise provide main loop functionality
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FGETC ; Wait for key press
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LOADUI R2 10 ; Reset counter
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JUMP @main ; And loop
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:main_1
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;; Close up as we are done
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LOADUI R0 0x1100 ; Close TAPE_01
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FCLOSE
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HALT
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