Which Addressing Mode is this? MOV DX, ES:[BX+6]?

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The discussion focuses on the segmented memory model of the 8086 assembly language, highlighting how segments can overlap. Specifically, addresses like A000:0000 and A001:0000 are not 64KB apart due to this overlap, which occurs every 16 bytes. The addressing modes mentioned include register addressing, immediate addressing, direct addressing, and register indirect mode, with a specific example provided for displacement combined with indirect addressing. The example illustrates how to access a 16-bit memory word using the instruction "mov dx, es:6[bx]," where the displacement can be either 8-bit or 16-bit. This reflects the complexity and versatility of addressing in 8086 assembly language.
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For 8086 assembly language.
 
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This is known as the segmented model. In this model as far as I know segments overlap every so many bytes (i think its 16 or some power of it). So basically A000:0000 and A001:0000 are not 64Kb apart but actually overlap.
 
x:y = 16*x+y

Unless my memory fails me.
 
umm.. I am thinking if it's register addressing mode, immediate addressing mode, direct addressing mode, register indirect mode or others..
 
displacement + indirect (register)

it can also be written as

mov dx,es:6[bx]

where 6 could be an 8 bit or 16 bit displacement (offset).

operand = 16 bit memory word at address [es*16 + bx + 6]
 
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Wow. I never knew there are combined ones. Ok, thank you very much. =)
 

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