Category: <b>other operating systems</b>
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<pre><b>INT E0 - ConcCP/M,DR Multiuser DOS - "Q_CWRITE" - CONDITIONALLY WRITE MSG QUEUE</b>

	CL = 8Ch
	DS:DX -&gt; queue parameter block (QPB) (see <a href=../../it/44/40.html>#04044</a>,<a href=../../it/45/40.html>#04045</a>)
Return: AX = status (0000h success, FFFFh failure)
	CX = error code (see <a href=../../it/21/40.html>#04021</a>)
Note:	also supported by REAL/32
SeeAlso: INT E0/CL=8Ah,INT E0/CL=8Bh
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