Tentative definitions for terminal definition block
 Ryan & Vint Associates, 514 E. 4th St., Santa Ana, CA  92701  (714)835-3073

Offset	name	size	description
  0	T.STS	W	Status flags
  2	T.IDV	L	Interface driver address
  6	T.IHW	L	I/O register base (hardware)
 12	T.IHM	L	Interface hardware port number
 16	T.TDV	L	Terminal driver address
 22	T.ICC	L	Input character count
 26	T.ECC	L	Echo character count
 32	T.BCC	L	Break character count
 36	T.IBF	L	Input buffer addr (base)
 42	T.IBS	L	Input buffer size
 46	T.OQX	L	Output queue index
 52	T.OBX	L	Output buffer index
 56	T.OBF	L	Output buffer addr (base)
 62	T.OBS	L	Output buffer size
 66	T.OBD	L	Output buffer ??
 72	T.POB	W	Beginning position count
 74	T.POO	W	Current output position
 76	T.LCH	B	Last character input
100	T.JLK	L	JCB link
104	T.ILB	L	Interface buffer
110	T.ILS	L	Interface size (terminal width)
114	T.IMP	L	Impure area pointer
120	T.BAU	W	Baud rate (#2=110)
122	T.SPR	32b	?? terminal spare area
154	T.TDF	??	?? - end of spare area

	Status Word Flags
T$IMI=	IMI=	  1	Set to force image mode
T$ECS=	ECS=	  2	Set to suppress input character echoing
T$LCL=	LCL=	  4	Set if terminal has local echoing (half duplex)
T$DAT=	DAT=	 10	Set to engage data mode (complete I/O transparency)
T$ILC=	ILC=	 20	Set to allow lower case input
T$OIP=	OIP=	200	Output in progress flag

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