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16 changed files with 1319 additions and 426 deletions
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AREA RESET,DATA,READONLY
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EXPORT __Vectors
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__Vectors
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DCD 0x10001000 ;
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DCD Reset_Handler ;
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ALIGN
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AREA mycode, CODE, READONLY
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ENTRY
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EXPORT Reset_Handler
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Reset_Handler
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MOV R0,#10
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MOV R1, #0x10
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MOV R3, #2_1010
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MOV R4, #5_34
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MOV R5, #-8
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; ========================================================================================
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; DATATRANSFER.asm - Basic Data Transfer Operations Demonstration
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; ========================================================================================
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; This program demonstrates various ways to transfer immediate data into ARM registers
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; using different number formats (decimal, hexadecimal, binary, and negative values).
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; The program loads different types of immediate values into registers R0-R5 to show
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; the flexibility of ARM's MOV instruction for data transfer operations.
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AREA RESET,DATA,READONLY ; Define a read-only data section for the vector table
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EXPORT __Vectors ; Export the vector table for external linking
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__Vectors ; Start of the vector table
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DCD 0x10001000 ; Stack pointer initial value (points to top of stack)
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DCD Reset_Handler ; Address of the reset handler (program entry point)
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ALIGN ; Ensure proper alignment for the next section
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AREA mycode, CODE, READONLY ; Define the code section as read-only
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ENTRY ; Mark the entry point of the program
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EXPORT Reset_Handler ; Export the reset handler function
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Reset_Handler ; Main program starts here
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; Step 1: Load decimal immediate value
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; MOV instruction transfers immediate data (value 10) into register R0
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; This demonstrates basic decimal number loading
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MOV R0,#10 ; R0 = 10 (decimal)
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; Step 2: Load hexadecimal immediate value
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; Load hexadecimal value 0x10 (16 decimal) into register R1
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; Shows how hexadecimal values are represented in assembly
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MOV R1, #0x10 ; R1 = 0x10 (16 decimal)
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; Step 3: Load binary immediate value
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; Load binary value 1010 (which equals 10 decimal) into register R3
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; The '2_' prefix indicates binary notation in ARM assembly
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MOV R3, #2_1010 ; R3 = 2_1010 (10 decimal in binary)
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; Step 4: Load another decimal immediate value
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; Load decimal value 34 into register R4
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; The '5_' prefix indicates decimal notation (though redundant here)
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MOV R4, #5_34 ; R4 = 34 (decimal)
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; Step 5: Load negative immediate value
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; Load negative value -8 into register R5
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; Demonstrates how negative numbers are handled in immediate loads
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MOV R5, #-8 ; R5 = -8 (negative value)
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; Step 6: Program termination
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; Create an infinite loop to stop program execution
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; This prevents the processor from executing undefined instructions
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STOP
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B STOP
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END;
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B STOP ; Branch to STOP label (infinite loop)
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END ; End of the assembly program
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