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Int 61 - FTP Software PC/tcp - Tcp/ip Tsr System Call Interface [N]
AH = system call number (see also entries below)
01h "pkt_alloc" (v2.05; this is "net_config" in v2.1+)
02h "pkt_free" (v2.05; this is "get_kernel_info" in v2.1+)
Return: CF clear if successful
CF set on error
AL = basic error (see below)
AH = suberror number
Notes: 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
BUG: the SLIP kernel for v2.05 bounds-checks the wrong register, so values
greater than 54h in AH may crash the system. Other kernels may have
this bug as well.
See Also: INT 61/AH=00h"PC/TCP",INT 61/AH=2Ah,INT 61/AH=54h
Index: installation check;PC/TCP
Values for error code:
00h "NET_NOERR" successful
01h "NET_ERR_INUSE" protocol or socket already in use
02h "NET_DOS_ERR" MS-DOS error (returned as suberror code in AH)
03h "NET_ERR_NOMEM" out of memory
04h "NET_ERR_NOTNETCONN" not a network descriptor
05h "NET_ERR_ILLEGALOP" invalid operation on given kind of network descriptor
06h "NET_ERR_BADPKT" illegal or corrupted packet
07h "NET_ERR_NOHOST" no host bound to specified connection
08h "NET_ERR_CANTOPEN" unable to open file
09h "NET_ERR_NET_UNREACHABLE" network is unreachable
0Ah "NET_ERR_HOST_UNREACHABLE" host is unreachable (see subcodes below)
0Bh "NET_ERR_PROT_UNREACHABLE" protocol is unreachable
0Ch "NET_ERR_PORT_UNREACHABLE" port is unreachable
0Dh "NET_ERR_TIMEOUT" operation timed out
0Eh "NET_ERR_HOSTUNKNOWN" unable to resolve host name
0Fh "NET_ERR_NOSERVERS" no name servers configured
10h "NET_ERR_SERVER_ERR" bad reply from name server
Subcodes: 0= no error, 1 = Host unreachable
11h "NET_ERR_BADFORMAT" bad format for IP address or field in IP address struc
is zero
12h "NET_ERR_BADARG" invalid argument
13h "NET_ERR_EOF" foreign host closed its end of connection
14h "NET_ERR_RESET" connection has been reset
15h "NET_ERR_WOULDBLOCK" recv() call was done on a non-blocking connection
with no data available
16h "NET_ERR_UNBOUND" insufficient resources to do operation
17h "NET_ERR_NODESC" could not allocate network descriptor
18h "NET_ERR_BADSYSCALL" invalid/unsupported kernel call
19h "NET_ERR_CANTBROADCAST" unable to broadcast
1Ah "NET_ERR_NOTESTAB" operation illegal because connection not established
1Bh kernel busy, try again later
1Ch "NET_ERR_ICMPMESG" an ICMP message was received (not on streams)
(see subcodes below)
---v2.1+---
1Dh "NET_ERR_TERMINATING" internal kernel fatal error
1Eh "NET_ERR_TAG_LOCKED" not allowed to set this tag (net_config)
1Fh "NET_ERR_BAD_INTERFACE" non existent interface specified
20h "NET_ERR_BADCONFIG" kernel cannot run - bad configuration
21h "NET_ERR_EMM" expanded memory error
22h "NET_ERR_CANT_SHUTDOWN" cant unload kernel (multitasker running)
23h "NET_ERR_PARKED_IN" unable to unhook DOS interrupt
24h "NET_ERR_NOQIOS" ran out of resources; try again later
25h "NET_ERR_WOULD_TRUNCATE" datagram too large and "don't truncate" was set
Values for subcodes of error 0Ah "NET_ERR_HOST_UNREACHABLE":
00h no error
01h host unreachable
02h ARP failed
03h hardware failure
04h link failure
05h no route
06h gateway down
Values for subcodes of error 1Ch "NET_ERR_ICMPMESG":
07h unrecognised
08h can't fragment
09h srcr_fail
0Ah source quench
0Bh time exceeded
0Ch parameter problem
0Dh admin_prohib. see also code 0Ah
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