Int 61 Fn 0E  - PC/tcp Kernel V2.05+ - "net_select" - Detect Readiness Of  [N]

   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

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.
   the installation check consists of testing for the signature "TCPTSR"
     three bytes beyond the start of the interrupt handler
   INT 61 is the default; PC/TCP v2.05 may be configured to use any
     interrupt from 20h through E0h

See Also: INT 61"PC/TCP",INT 61/AH=00h"PC/TCP"