Category: <b>resident utilities</b>
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<pre><b>INT B3 - ZIPKEY - GET NAME OF PRIMARY CITY FOR A ZIPCODE REGION</b>

	AH = 7Eh
	DX = zipcode region (0-999)
	ES:DI -&gt; buffer for name
Return: CF set on error
	    AL = FFh region does not exist
	CF clear if successful
	    AL = ZIPKEY state code
	    ES:DI points one byte beyond end of name
SeeAlso: AH=76h
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