KISS and AX.25 protocol support for Synchronet. (Rewritten)

Now supports all KISS commands, and multiport TNCs, buffered send and receive of packets for more gooder throughput.
Closer to a complete implementation of AX.25 2.2, with timers, command/response, poll/final handling now in place.
Various other improvements.

exec/load/ax25defs.js

@@ -4,58 +4,63 @@
 const AX25_FLAG = (1<<1)|(1<<2)|(1<<3)|(1<<4)|(1<<5)|(1<<6);	// Unused, but included for non-KISS implementations.
 
 // Address field - SSID subfield bitmasks
-const A_CRH = (1<<7);				// Command/Response or Has-Been-Repeated bit of an SSID octet
-const A_RR = (1<<5)|(1<<6);			// The "R" (reserved) bits of an SSID octet
-const A_SSID = (1<<1)|(1<<2)|(1<<3)|(1<<4);	// The SSID portion of an SSID octet
+const A_CRH		= (1<<7);						// Command/Response or Has-Been-Repeated bit of an SSID octet
+const A_RR		= (1<<5)|(1<<6);				// The "R" (reserved) bits of an SSID octet
+const A_SSID	= (1<<1)|(1<<2)|(1<<3)|(1<<4);	// The SSID portion of an SSID octet
 
 // Control field bitmasks
-const PF = (1<<4);			// Poll/Final
+const PF = (1<<4);					// Poll/Final
 const NR = (1<<5)|(1<<6)|(1<<7);	// N(R) - receive sequence number
 const NS = (1<<1)|(1<<2)|(1<<3);	// N(S) - send sequence number
 // 	Information frame
-const I_FRAME = 0;	// Derp
+const I_FRAME		= 0;
+const I_FRAME_MASK	= 1;
 // 	Supervisory frame and subtypes
-const S_FRAME = (1<<0);
-const S_FRAME_RR = S_FRAME;		// Receive Ready
-const S_FRAME_RNR = S_FRAME|(1<<2);	// Receive Not Ready
-const S_FRAME_REJ = S_FRAME|(1<<3);	// Reject
+const S_FRAME		= 1;
+const S_FRAME_RR	= S_FRAME;			// Receive Ready
+const S_FRAME_RNR	= S_FRAME|(1<<2);	// Receive Not Ready
+const S_FRAME_REJ	= S_FRAME|(1<<3);	// Reject
+const S_FRAME_MASK	= S_FRAME|S_FRAME_RR|S_FRAME_RNR|S_FRAME_REJ
 // 	Unnumbered frame and subtypes
-const U_FRAME = (1<<0)|(1<<1);
-const U_FRAME_SABM = U_FRAME|(1<<2)|(1<<3)|(1<<5);	// Set Asynchronous Balanced Mode
-const U_FRAME_DISC = U_FRAME|(1<<6);			// Disconnect
-const U_FRAME_DM = U_FRAME|(1<<2)|(1<<3);		// Disconnected Mode
-const U_FRAME_UA = U_FRAME|(1<<5)|(1<<6);		// Acknowledge
-const U_FRAME_FRMR = U_FRAME|(1<<2)|(1<<7);		// Frame Reject
-const U_FRAME_UI =  U_FRAME;				// Information
+const U_FRAME		= 3;
+const U_FRAME_SABM	= U_FRAME|(1<<2)|(1<<3)|(1<<5);	// Set Asynchronous Balanced Mode
+const U_FRAME_DISC	= U_FRAME|(1<<6);				// Disconnect
+const U_FRAME_DM	= U_FRAME|(1<<2)|(1<<3);		// Disconnected Mode
+const U_FRAME_UA	= U_FRAME|(1<<5)|(1<<6);		// Acknowledge
+const U_FRAME_FRMR	= U_FRAME|(1<<2)|(1<<7);		// Frame Reject
+const U_FRAME_UI	= U_FRAME;						// Information
+const U_FRAME_MASK	= U_FRAME|U_FRAME_SABM|U_FRAME_DISC|U_FRAME_DM|U_FRAME_UA|U_FRAME_FRMR;
 
 // Protocol ID field bitmasks (most are unlikely to be used, but are here for the sake of completeness.)
-const PID_X25 = (1<<0);								// ISO 8208/CCITT X.25 PLP
-const PID_CTCPIP = (1<<1)|(1<<2);						// Compressed TCP/IP packet. Van Jacobson (RFC 1144)
-const PID_UCTCPIP = (1<<0)|(1<<1)|(1<<2);					// Uncompressed TCP/IP packet. Van Jacobson (RFC 1144)
-const PID_SEGF = (1<<4);							// Segmentation fragment
-const PID_TEXNET = (1<<0)|(1<<1)|(1<<6)|(1<<7);					// TEXNET datagram protocol
-const PID_LQP = (1<<2)|(1<<6)|(1<<7);						// Link Quality Protocol
-const PID_ATALK = (1<<1)|(1<<3)|(1<<6)|(1<<7);					// Appletalk
-const PID_ATALKARP = (1<<0)|(1<<1)|(1<<3)|(1<<6)|(1<<7);			// Appletalk ARP
-const PID_ARPAIP = (1<<2)|(1<<3)|(1<<6)|(1<<7);					// ARPA Internet Protocol
-const PID_ARPAAR = (1<<0)|(1<<2)|(1<<3)|(1<<6)|(1<<7);				// ARPA Address Resolution
-const PID_FLEXNET = (1<<1)|(1<<2)|(1<<3)|(1<<6)|(1<<7);				// FlexNet
-const PID_NETROM = (1<<0)|(1<<1)|(1<<2)|(1<<3)|(1<<6)|(1<<7);			// Net/ROM
-const PID_NONE = (1<<4)|(1<<5)|(1<<6)|(1<<7);					// No layer 3 protocol implemented
-const PID_ESC	= (1<<0)|(1<<1)|(1<<2)|(1<<3)|(1<<4)|(1<<5)|(1<<6)|(1<<7);	// Escape character. Next octet contains more Level 3 protocol information.
+const PID_X25		= 1;											// ISO 8208/CCITT X.25 PLP
+const PID_CTCPIP	= (1<<1)|(1<<2);								// Compressed TCP/IP packet. Van Jacobson (RFC 1144)
+const PID_UCTCPIP	= (1<<0)|(1<<1)|(1<<2);							// Uncompressed TCP/IP packet. Van Jacobson (RFC 1144)
+const PID_SEGF		= (1<<4);										// Segmentation fragment
+const PID_TEXNET	= (1<<0)|(1<<1)|(1<<6)|(1<<7);					// TEXNET datagram protocol
+const PID_LQP		= (1<<2)|(1<<6)|(1<<7);							// Link Quality Protocol
+const PID_ATALK		= (1<<1)|(1<<3)|(1<<6)|(1<<7);					// Appletalk
+const PID_ATALKARP	= (1<<0)|(1<<1)|(1<<3)|(1<<6)|(1<<7);			// Appletalk ARP
+const PID_ARPAIP	= (1<<2)|(1<<3)|(1<<6)|(1<<7);					// ARPA Internet Protocol
+const PID_ARPAAR	= (1<<0)|(1<<2)|(1<<3)|(1<<6)|(1<<7);			// ARPA Address Resolution
+const PID_FLEXNET	= (1<<1)|(1<<2)|(1<<3)|(1<<6)|(1<<7);			// FlexNet
+const PID_NETROM	= (1<<0)|(1<<1)|(1<<2)|(1<<3)|(1<<6)|(1<<7);	// Net/ROM
+const PID_NONE		= (1<<4)|(1<<5)|(1<<6)|(1<<7);					// No layer 3 protocol implemented
+const PID_ESC		= 255;											// Escape character. Next octet contains more Level 3 protocol information.
 
 // KISS protocol-related constants
 
 // 	FEND and transpositions
-const KISS_FEND = (1<<6)|(1<<7);				// Frame end
-const KISS_FESC = (1<<0)|(1<<1)|(1<<3)|(1<<4)|(1<<6)|(1<<7);	// Frame escape
-const KISS_TFEND = (1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7);		// Transposed frame end
-const KISS_TFESC = (1<<0)|(1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7);	// Transposed frame escape
+const KISS_FEND		= (1<<6)|(1<<7);								// Frame end
+const KISS_FESC		= (1<<0)|(1<<1)|(1<<3)|(1<<4)|(1<<6)|(1<<7);	// Frame escape
+const KISS_TFEND	= (1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7);			// Transposed frame end
+const KISS_TFESC	= (1<<0)|(1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7);	// Transposed frame escape
 
-// 	Commands (SetHardware (0x06) excluded intentionally.)
-const KISS_DF = 0;		// Data frame
-const KISS_TXD = (1<<0);	// TX delay
-const KISS_P = (1<<1);		// Persistence
-const KISS_ST = (1<<0)|(1<<1);	// Slot time
-const KISS_TXT = (1<<2);	// TX tail
-const KISS_FD = (1<<0)|(1<<2);	// Full Duplex
+// 	Commands
+const KISS_DATAFRAME	= 0;	// Data frame
+const KISS_TXDELAY	 	= 1;	// TX delay
+const KISS_PERSISTENCE	= 2;	// Persistence
+const KISS_SLOTTIME		= 3;	// Slot time
+const KISS_TXTAIL		= 4;	// TX tail
+const KISS_FULLDUPLEX	= 5;	// Full Duplex
+const KISS_SETHARDWARE	= 6;	// Set Hardware
+const KISS_RETURN		= 255;	// Exit KISS mode
\ No newline at end of file