Service Call Summary
			    ====================

dec.	hex.	Function
 0	00	Call claimed
 1	01	Claim absolute workspace
 2	02	Claim private workspace
 3	03	Autoboot call
 4	04	Unrecognised *-command
 5	05	Unrecognised interupt
 6	06	Error occured
 7	07	Unrecognised OSBYTE
 8	08	Unrecognised OSWORD
 9	09	*HELP command
10	0A	Claim absolute workspace
11	0B	NMI released
12	0C	NMI claimed
13	0D	Rom filing system initialise
14	0E	Rom filing system get byte
15	0F	Vectors claimed
16	10	Close any *SPOOL or *EXEC files
17	11	Font implosion/explosion warning
18	12	Initialise filing system
19	13	Character placed in RS232 buffer (Electron)
20	14	Character placed in printer buffer (Electron)
21	15	100Hz poll
22	16	BEL request made
23	17	SOUND buffer purged
24	18	Interactive *HELP
25	19
26	1A
27	1B
28	1C
29	1D
30	1E
31	1F
32	20
33	21	Claim absolute workspace in Hazel
34	22	Claim private workspace in Hazel
35	23	Reports top of private workspace
36	24	Absolute workspace in Hazel count
37	25	Return filing system information
38	26	*SHUT command issued
39	27	Hard reset call
40	28	*CONFIGURE command
41	29	*STATUS command
42	2A	Language about to be initialised
43	2B
44	2C	Joystick request
45	2D
46	2E
47	2F

254	FE	Post initialisation Tube system call
255	FF	Tube system main initialisation