INT 61 U - PC/TCP kernel v2.05 - GET DEBUG INFORMATION
        AH = 00h
        DS:SI -> 216-byte buffer for network debugging information (see below)
Return: CF clear
        AX = 0000h
        buffer filled
SeeAlso: INT 61/AH=2Ah"PC/TCP"

Format of network debugging information:
Offset  Size    Description
 00h    DWORD   number of interrupts
 04h    DWORD   receive buffer low-water mark
 08h    DWORD   transmit buffer low-water mark
 0Ch    DWORD   number of packets received
 10h    DWORD   number of packets transmitted
 14h    DWORD   total receive errors
 18h    DWORD   total transmit errors
 1Ch  4 BYTEs   ???
 20h    DWORD   receive resets
 24h    DWORD   transmit resets
 28h    DWORD   number of "runts" received
 2Ch    DWORD   number of alignment errors on received packets
 30h    DWORD   number of CRC errors on received packets
 34h    DWORD   number of parity errors on received packets
 38h    DWORD   number of receive overflow errors
 3Ch    DWORD   number of oversized packets received
 40h    DWORD   number of packets lost due to lack of buffers
 44h    DWORD   receive timeouts
 48h 32 BYTEs   ???
 68h    DWORD   number of transmit collisions
 6Ch    DWORD   number of transmit timeouts
 70h    DWORD   number of transmit underflows
 74h    DWORD   number of lost "crs" on transmit
 78h    DWORD   number of times heartbeat failed on transmit
 7Ch 24 BYTEs   ???
 94h    WORD    free packet buffers
 96h    WORD    total packet buffers
 98h    WORD    minimum number of packet buffers free since kernel started
 9Ah 24 BYTEs   ???
 B2h    DWORD   pointer to TCP connection list???
 B6h    DWORD   pointer to IP routing table???
 BAh 30 BYTEs   ???