Category:8086 Assembly: Difference between revisions
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→Other Registers: added an example of indexed addressing
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===Other Registers===
When writing to or reading from consecutive sections of memory, it is helpful to apply an offset from a base value. The Base Pointer register <code>BP</code>, Source Index <code>SI</code>, and Destination Index <code>DI</code> can point to various regions of memory. Many commands that work with these registers can auto-increment or decrement them after each load or store. In addition, they can be optionally offset by a constant,
The syntax for offsetting an index register will vary depending on your assembler. Many assemblers will often accept multiple different ways of writing it, and it comes down to personal preference.
<lang asm>
mov si, offset MyArray
mov bx,2
mov al,[bx+si] ;loads decimal 30 into AL
MyArray:
byte 10,20,30,40,50</lang>
===The Stack===
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