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back2root:ibm-pc-ms-dos:interrupts:int_21:int_21_06

Table des matières

INT 0x21 - 0x06 - Direct console output

Request/Call:

reg value descr
AH 0x06
DL Character to output (except FFh, see 06h,ffh )

Return:

reg descr
AL character output (despite the official docs which state nothing is returned) (at least DOS 3.3-5.0)

Notes & Comments

  • does NOT check ^C/^Break
  • writes to standard output, which is always the screen under DOS 1.x, but may be redirected under DOS 2+

SeeAlso: AH=02h,AH=09h

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back2root/ibm-pc-ms-dos/interrupts/int_21/int_21_06.txt · Dernière modification : 2024/10/25 14:29 de frater