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====== Int 17H, AH=00H ======

===== Version =====

IBM 5150 and higher

===== Brief =====

Print character

===== Family API =====

[[en:docs:fapi:DosWrite]]

===== Input =====

  * AH = 00h
  * AL = character to write
  * DX = printer number (00h-02h)

===== Return =====

  * AH = printer status (see #00631)

===== Macro =====

<code asm>
INCLUDE BIOS.INC

@PrnPrint 0, 'A'
</code>

===== Notes =====

  * Under PhysTechSoft's PTS ROM-DOS the parallel port can also be accessed as COM5.
  * Some print spoolers trash the BX register on return.
  * Some original IBM BIOSes set more than one printer status bits at a time, while only one of them is correct.

===== Note =====

Text based on [[http://www.cs.cmu.edu/~ralf/files.html|Ralf Brown Interrupt List Release 61]]

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