Category: <b>network</b>
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<pre><b>INT 61 - PC/TCP kernel v2.05+ - "net_select" - DETECT READINESS OF NETWORK</b>

	AH = 0Eh
	BX = maximum value of network descriptor for which to return info
	DS:DX -&gt; 32-bit (max) array of bit flags for read readiness
	ES:DI -&gt; 32-bit (max) array of bit flags for write readiness
Return: CF clear
InstallCheck:	test for the signature "TCPTSR" three bytes beyond the start
	  of the interrupt handler
Range:	INT 20 to INT E0, selected by configuration
Notes:	bits in the DS:DX buffer are set if the corresponding network
	  descriptor may be read without blocking; bits in the ES:DI buffer
	  are set if the corresponding network descriptor may be written
	  without blocking.  This implies that the network descriptor has
	  opened correctly and the protocol initialized.
SeeAlso: INT 61"FTP Software",INT 61/AH=00h"PC/TCP"
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