Quick, beginner MASM register question - DX:AX

Posted by Francisco P. on Stack Overflow See other posts from Stack Overflow or by Francisco P.
Published on 2010-04-19T13:54:05Z Indexed on 2010/04/19 14:03 UTC
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beginner

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masm

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register

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cpu-registers

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assembly

Hello, I am currently studying for an exam I'll have on x86 assembly.

I didn't have much luck googling for ":", too common of a punctuation mark :/

IDIV - Signed Integer Division

Usage: IDIV src

Modifies flags: (AF,CF,OF,PF,SF,ZF undefined)

Signed binary division of accumulator by source. If source is a byte value, AX is divided by "src" and the quotient is stored in AL and the remainder in AH. If source is a word value, DX:AX is divided by "src", and the quotient is stored in AL and the remainder in DX.

Taken from "Intel Opcodes and Mnemonics"

What does DX:AX mean?

Thanks a lot for your time :)

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