Category: <b>serial I/O</b>
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<pre><b>INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET I/O BUFFER SIZES</b>

	AX = 8003h
	DX = port number
Return: AX = number of characters in input buffer
	BX = input buffer size
	CX = number of characters in output buffer
	DX = output buffer size
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"
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