BBC OSWORD INDEX
				================

This is an index of OSWORD calls which I am aware of. Please send mail to
jgh@mdfs.net if you have any additions to this list.

Hex Dec Function						First appears
------------------------------------------------------------------------------
&00  0  Input line (INPUT)					Acorn MOS 1.20
&01  1  Read system clock (=TIME)				Acorn MOS 1.20
&02  2  Write system clock (TIME=)				Acorn MOS 1.20
&03  3  Read interval timer					Acorn MOS 1.20
&04  4  Write interval timer					Acorn MOS 1.20
&05  5  Read I/O processor memory				Acorn MOS 1.20
&06  6  Write I/O processor memory				Acorn MOS 1.20
&07  7  Generate a sound (SOUND)				Acorn MOS 1.20
&08  8  Define a sound envelope (ENVELOPE)			Acorn MOS 1.20
&09  9  Read screen pixel value (=POINT)			Acorn MOS 1.20
&0A 10  Read character definition				Acorn MOS 1.20
&0B 11  Read palette						Acorn MOS 1.20
&0C 12  Write palette						Acorn MOS 1.20
&0D 13  Read last two graphics positions			Acorn MOS 1.20
&0E 14  Reads CMOS clock (=TIME$)				Acorn Master MOS
&0F 15  Write CMOS clock (TIME$=)				Acorn Master MOS
&10 16  Network transmit					NFS
&11 17  Open or read network receive block			NFS
&12 18  Read argument block and restore protection mask 	NFS
&13 19  Read/Write NFS information				NFS
&14 20  Various NFS/Network functions				NFS
&15 21  Read/Write mouse and pointer infomation 		Arthur
&16 22  Set screen base start					Arthur
&17 23
&18 24
&19 25  Watford Electronics Speech command
&1A 26
&1B 27
&1C 28
&1D 29
&1E 30
&1F 31
&20 32  Acorn User Windowing System				AUWIN
&20 32  Transfer data between Tube and I/O			TubeLink
&21 33  Execute code in I/O processor				TubeLink
&22 34  Read printer buffer information (UtilRAM)
&23 35  Write printer buffer information (UtilRAM) 
&24 36
&25 37
&26 38
&27 39
&28 40  Read PRISMA information table				Prisma
&29 41  Read PRISMA pixel value					Prisma
&2A 42  Read PRISMA logical screen size				Prisma
&2B 43  Read PRISMA colour palette				Prisma
&2C 44  Send VDU code direct to PRISMA				Prisma
&2D 45  Read last two PRISMA graphics cursors			Prisma
&2E 46  Read PRISMA BASE screen visible origin			Prisma
&2F 47  Read PRISMA graphics origin				Prisma
&30 48  Read PRISMA interrupt status				Prisma
&31 49  Direct call to PRISMA command				Prisma
&32 50  Read position of PRISMA roller screen			Prisma
&33 51  Read/write PRISMA non-volatitle memory			Prisma
&34 52
&35 53
&36 54  Stop Press Routines					Stop Press
&37 55
&38 56
&39 57
&3A 58
&3B 59
&3C 60
&3D 61
&3E 62
&3F 63
&40 64  Read mouse pointer and button state			AMX Super Art
&41 65  Miscellaneous graphics commands 			AMX Super Art
&42 66  Sideways RAM transfer					1770 DFS
&43 67  Load/Save into/from sideways Ram			1770 DFS
&44 68  AMX Super Art ROM commands				AMX Super Art
&45 69  Move/Swap memory					Aries B32
&45 69  Digitise picture					RHE
&46 70  Allocated to BBC soft, probably unused.
&47 71  PrettyPrint						Sprow
&48 72
&49 73  Integra-B Windows commands				Integra-B
&4A 74
&4B 75
&4C 76  Extended communications control 			TQCOM
&4D 77  -
&4E 78  Initialise heap 					DVR
&4F 79  Claim area from heap					DVR
&50 80  Release area to heap					DVR 
&50 80  Read Real-Time Clock					CDFS
&51 81  Get maximum heap block size				DVR
&51 81  Write Real-Time Clock					CDFS
&51 81  HKSET Support						SEHK
&51 81  TORCH
&52 82  Initialise file buffer					DVR
&52 82  TORCH
&53 83  Finish with file buffer 				DVR
&53 83  TORCH
&54 84  Flush file buffer					DVR
&55 85  Get bytes from file buffer				DVR
&56 86  Put bytes to file buffer				DVR
&57 87  Create new binary tree node				DVR
&58 88  Insert node into binary tree				DVR
&59 89  Delete node from binary tree				DVR
&5A 90  Find node in binary tree				DVR
&5A 90  HADFS Sector read/write/access				HADFS
&5B 91  Traverse binary tree					DVR
&5C 92  Balance binary tree					DVR
&5D 93  Parse option patterns					DVR
&5E 94  Get string with control character interpretation	DVR
&5F 95  Read/write across tube					BBC Soft Monitor
&60 96  Read Videodisk MSN and status byte			VFS
&61 97  Read free space on VFS disk				VFS
&62 98  Access LVROM controller 				VFS
&63 99  Read last VFS error number				VFS
&64 100 Read current F-code					VFS
&65 101
&66 102
&67 103
&68 104
&69 105
&6A 106
&6B 107
&6C 108
&6D 109
&6E 110 Read byte from shadow Ram board 			Watford 32K
&6F 111 Write byte to shadow Ram board				Watford 32K
&70 112 Read master sequence number and status byte		ADFS
&71 113 Read free space on disc 				ADFS
&72 114 Read/Write MFM sectors					ADFS
&73 115 Read information about last error			ADFS
&74 116
&75 117
&76 118
&77 119
&78 120
&79 121
&7A 122 Teletext commands					Teletext
&7B 123 Modem commands						Prestel Adaptor
&7B 123 Modem commands						COMMAND
&7B 123 Move a block of memory					HDFS
&7C 124 Multiple track single density FDC command		HDFS
&7D 125 Read cycle number of disc				DFS, HDFS
&7E 126 Read disc (or directory) size				DFS, HDFS
&7F 127 Single track single density FDC command 		DFS, HDFS
&80 128 IEEE Commands						IEEEFS
&80 128 Springboard DOS INT					Springboard
&81 129 Springboard						Springboard
&82 130 Read/Write parameters					Cambridge ring
&83 131 Data transmission					Cambridge ring
&84 132 Ring polling						Cambridge ring
&85 133 Springboard						Springboard
&86 134 Springboard						Springboard
&87 135
&88 136
&89 137 Read teletext pixel					Dump Out 3
&8A 138 Set teletext pixel					Dump Out 3
&8B 139
&8C 140
&8D 141
&8E 142
&8F 143
&90 144 "Service interface - Network"
&91 145
&92 146
&93 147
&94 148
&95 149
&96 150
&97 151
&98 152
&99 153
&9A 154
&9B 155
&9C 156
&9D 157
&9E 158
&9F 159
&A0 160 "Isolated word recogniser"
&A1 161
&A2 162
&A3 163
&A4 164
&A5 165
&A6 166
&A7 167
&A8 168
&A9 169
&AA 170
&AB 171
&AC 172
&AD 173
&AE 174
&AF 175
&B0 176 GoMMC access & control					GoMMC
&B1 177
&B2 178 Advanced BASIC (BASIC V) support			AdvBASIC
&B3 179
&B4 180
&B5 181 PRES Editor calls
&B6 182
&B7 183
&B8 184
&B9 185
&BA 186
&BB 187 Morley Electronics RAMdisc				Morley RAMdisc
&BB 187 Print screen dump					SCDUMP
&BC 188
&BD 189
&BE 190 Disassemble data					DisAssem
&BF 191 Fetch URI						URI Fetcher
&C0 192 Eureka transfer data between memory banks
&C0 192 Sockets and Resolver interface
&C1 193 Acorn User Windowing System				AUWIN
&C2 194
&C3 195
&C4 196
&C5 197
&C6 198
&C7 199
&C8 200 SWI Operation on Host ARM				JGH
&C9 201
&CA 202
&CB 203
&CC 204
&CD 205
&CE 206
&CF 207
&D0 208
&D1 209
&D2 210
&D3 211
&D4 212
&D5 213
&D6 214
&D7 215
&D8 216
&D9 217
&DA 218
&DB 219
&DC 220
&DD 221
&DE 222
&DF 223
&E0 224 \
&E1 225  |
&E2 226  |
&E3 227  |
&E4 228  |
&E5 229  |
&E6 230  |
&E7 231  | Used by MASM and friends when running to
&E8 232  | communicate with its code in the host
&E9 233  |
&EA 234  |
&EB 235  |
&EC 236  |
&ED 237  |
&EE 238  |
&EF 239 /
&F0 240
&F1 241
&F2 242
&F3 243
&F4 244
&F5 245
&F6 246
&F7 247
&F8 248
&F9 249
&FA 250 Data transfer over Tube 				80x86 Tube OS
&FB 251 WD1770/2 Floppy Disk Control				80x86 DOS
&FC 252 DOS CRTC Control					80x86 DOS
&FD 253 -
&FE 254 DOS Text output (unimplemented) 			80x86 DOS
&FE 254 Z80 SP Disc Read					Z80 CP/M
&FF 255 DOS fast screen control 				80x86 DOS
&FF 255 Z80 Data transfer over Tube				Z80 Tube OS


Update History
--------------
21-Jun-1993: Angus Duggan, initial list of &00-&0F, &4E..&5E, &7D..&7F.
28-Feb-1997: J.G.Harston, Re-edited, added &10-&16, &20, &42, &43, &45, &5A,
		&60, &62-&64, &70-&73, &7A, &7B, &BE, &FA, &FE, &FF.
04-Oct-1998: J.G.Harston, updated &20, added &51, &89, &8A, &C8, &FB-&FD.
xx-May-1999: J.G.Harston, added &47.
03-Oct-2001: J.G.Harston, added &BF.
30-Aug-2003: J.G.Harston, added &20, &21, &45.
07-Aug-2004: J.G.Harston, added &80, &81, &85, &86.
30-Aug-2004: J.G.Harston, added &B0.
24-Sep-2006: J.G.Harston, added &B2.
27-Feb-2008: J.G.Harston, added &BB, &50, &51, &72, &80 IEEE.
20-Oct-2015: J.G.Harston, added &28-&33 PRISMA calls.
18-Dec-2015: J.G.Harston, added &C0 Eureka call, &B5 PRES call.
&22,&23 UtilRAM calls.