; ========================================================================================
; DATATRANSFER.asm - Basic Data Transfer Operations Demonstration
; ========================================================================================
; This program demonstrates various ways to transfer immediate data into ARM registers
; using different number formats (decimal, hexadecimal, binary, and negative values).
; The program loads different types of immediate values into registers R0-R5 to show
; the flexibility of ARM's MOV instruction for data transfer operations.

	AREA RESET,DATA,READONLY        ; Define a read-only data section for the vector table
	EXPORT __Vectors                ; Export the vector table for external linking

__Vectors                           ; Start of the vector table
	DCD 0x10001000                  ; Stack pointer initial value (points to top of stack)
	DCD Reset_Handler               ; Address of the reset handler (program entry point)
	ALIGN                           ; Ensure proper alignment for the next section

	AREA mycode, CODE, READONLY     ; Define the code section as read-only
	ENTRY                           ; Mark the entry point of the program
	EXPORT Reset_Handler           ; Export the reset handler function

Reset_Handler                       ; Main program starts here
	; Step 1: Load decimal immediate value
	; MOV instruction transfers immediate data (value 10) into register R0
	; This demonstrates basic decimal number loading
	MOV R0,#10                      ; R0 = 10 (decimal)

	; Step 2: Load hexadecimal immediate value
	; Load hexadecimal value 0x10 (16 decimal) into register R1
	; Shows how hexadecimal values are represented in assembly
	MOV R1, #0x10                   ; R1 = 0x10 (16 decimal)

	; Step 3: Load binary immediate value
	; Load binary value 1010 (which equals 10 decimal) into register R3
	; The '2_' prefix indicates binary notation in ARM assembly
	MOV R3, #2_1010                 ; R3 = 2_1010 (10 decimal in binary)

	; Step 4: Load another decimal immediate value
	; Load decimal value 34 into register R4
	; The '5_' prefix indicates decimal notation (though redundant here)
	MOV R4, #5_34                   ; R4 = 34 (decimal)

	; Step 5: Load negative immediate value
	; Load negative value -8 into register R5
	; Demonstrates how negative numbers are handled in immediate loads
	MOV R5, #-8                     ; R5 = -8 (negative value)

	; Step 6: Program termination
	; Create an infinite loop to stop program execution
	; This prevents the processor from executing undefined instructions
STOP
	B STOP                          ; Branch to STOP label (infinite loop)

	END                             ; End of the assembly program