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PC/TCP kernel v2.05+ - net_select - DETECT READINESS OF NETWORK

AH = 0Eh
BX = maximum value of network descriptor for which to return info
DS:DX -> 32-bit (max) array of bit flags for read readiness
ES:DI -> 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.

See Also: INT 61"FTP Software" - INT 61/AH=00h"PC/TCP"

Category: Network - Int 61h - P

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