OSWORDs

OSWORD INDEX

Hex Dec Function &00 0 Input line (INPUT) &01 1 Read system clock (=TIME) &02 2 Write system clock (TIME=) &03 3 Read interval timer &04 4 Write interval timer &05 5 Read I/O processor memory &06 6 Write I/O processor memory &07 7 Generate a sound (SOUND) &08 8 Define a sound envelope (ENVELOPE) &09 9 Read screen pixel value (=POINT) &0A 10 Read character definition &0B 11 Read palette &0C 12 Write palette &0D 13 Read last two graphics positions &0E 14 Read Real-Time clock (=TIME$) &0F 15 Write Real-Time clock (TIME$=) &10 16 Network transmit &11 17 Open or read network receive block &12 18 Read argument block and restore protection mask NFS &13 19 Read/Write NFS information &14 20 Various NFS/Network functions &15 21 Read/Write mouse and pointer infomation &16 22 Set screen base start &17 23 &18 24 IP Network transmit &19 25 IP Open or read network receive block &19 25 Watford Electronics Speech control &1A 26 &1B 27 &1C 28 &1D 29 &1E 30 &1F 31 &20 32 Acorn User Windowing System (depreciated) &20 32 Transfer data between Tube and I/O &21 33 Execute code in I/O processor &22 34 Colin Dean Utility RAM - read memory &23 35 Colin Dean Utility RAM - write memory &24 36 &25 37 &26 38 &27 39 &28 40 EasyTalk speech ROM &29 41 EasyTalk speech ROM &2A 42 EasyTalk speech ROM &2B 43 EasyTalk speech ROM &2C 44 EasyTalk speech ROM &2D 45 EasyTalk speech ROM &28 40 Read PRISMA information table &29 41 Read PRISMA pixel value &2A 42 Read PRISMA logical screen size &2B 43 Read PRISMA colour palette &2C 44 Send VDU code direct to PRISMA &2D 45 Read last two PRISMA graphics positions &2E 46 Read PRISMA BASE screen visible origin &2F 47 Read PRISMA graphics origin &30 48 Read PRISMA interrupt status &31 49 Direct call to PRISMA command &32 50 Read position of PRISMA roller screen &33 51 Read/write PRISMA non-volatitle memory &34 52 &35 53 &36 54 Stop Press Routines &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 &41 65 Miscellaneous graphics commands &42 66 Sideways RAM transfer &43 67 Load/Save into/from sideways RAM &44 68 AMX Super Art ROM commands &45 69 Move/Swap memory &45 69 Digitise picture &46 70 Allocated to BBC soft, probably unused &47 71 Allocated to HowSoft, probable unused &47 71 PrettyPrint &48 72 &49 73 Integra-B calls &4A 74 &4B 75 &4C 76 Extended communications control &4D 77 &4E 78 Initialise heap &4F 79 Claim area from heap &50 80 Release area to heap &50 80 ADFS extension &50 80 Read Real-Time Clock &51 81 Get maximum heap block size &51 81 Write Real-Time Clock &51 81 HKSET Support &51 81 TORCH &52 82 Initialise file buffer &52 82 TORCH &53 83 Finish with file buffer &53 83 TORCH &54 84 Flush file buffer &55 85 Get bytes from file buffer &56 86 Put bytes to file buffer &57 87 Create new binary tree node &58 88 Insert node into binary tree &59 89 Delete node from binary tree &5A 90 Find node in binary tree &5A 90 HADFS Sector read/write/access &5B 91 Traverse binary tree &5C 92 Balance binary tree &5D 93 Parse option patterns &5E 94 Get string with control character interpretation DVR &5F 95 Read/write I/O memory across Tube &60 96 LVFS Read Videodisk MSN and status byte &61 97 LVFS Read free space on VFS disk &62 98 LVFS Access LVROM controller &63 99 LVFS Read last VFS error number &64 100 LVFS Read current F-code &65 101 WiFi control &66 102 &67 103 &68 104 XDFS Read MSN and status byte (provisional) &69 105 XDFS Read free space on disc (provisional) &6A 106 XDFS Read/Write disk sectors (provisional) &6B 107 XDFS Read information about last error (provisional) &6C 108 &6D 109 &6E 110 Read byte from shadow RAM board &6F 111 Write byte to shadow RAM board &70 112 ADFS Read master sequence number and status byte &71 113 ADFS Read free space on disc &72 114 ADFS Read/Write MFM sectors &73 115 ADFS Read information about last error &74 116 &75 117 &76 118 RAMFS MFM sector access &77 119 RAMFS FM sector access &78 120 &79 121 &7A 122 Teletext commands &7B 123 Modem commands &7B 123 Move a block of memory &7C 124 DFS Multiple track single density FDC command &7D 125 DFS Read cycle number of disc &7E 126 DFS Read disc (or directory) size &7F 127 DFS Single track single density FDC command

Hex Dec Function &80 128 IEEE Command &80 128 Springboard DOS INT &81 129 Merlin M2100 Terminal control &82 130 Cambridge Ring: Read/Write parameters &83 131 Cambridge Ring: Data transmission &84 132 Cambridge Ring: Ring polling &85 133 Springboard &86 134 Springboard &87 135 &88 136 &89 137 Read teletext pixel &8A 138 Set teletext pixel &8B 139 Read soft teletext font &8C 140 Write soft teletext font &8D 141 &8E 142 &8F 143 &90 144 Acorn X25 Gateway &91 145 &92 146 &93 147 &94 148 &95 149 &96 150 &97 151 &98 152 &99 153 Blitter control &9A 154 BeebLink: perform request &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/GoSDC access & control &B1 177 &B2 178 Advanced BASIC (BASIC V) support &B3 179 &B4 180 &B5 181 PRES Editor and Utilities &B6 182 &B7 183 &B8 184 &B9 185 &BA 186 &BB 187 Morley Electronics RAMdisc &BC 188 &BD 189 &BE 190 Disassemble data &BF 191 Fetch URI &C0 192 Sockets and Resolver interface &C0 192 Eureka memory control &C1 193 Acorn User Windowing System &C2 194 &C3 195 &C4 196 &C5 197 &C6 198 &C7 199 &C8 200 SWI Operation on Host ARM &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 &E8 232 &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 &FB 251 WD1770/2 Floppy Disk Control &FC 252 DOS CRTC Control &FD 253 &FE 254 DOS Text output (unimplemented) &FE 254 Z80 MFM disk access &FF 255 DOS fast screen control &FF 255 Z80 Data transfer over Tube

Jgharston 15:19, 25 May 2009 (UTC) Jgharston (talk) 20:37, 3 April 2015 (UTC) Jgharston (talk) 22:44, 20 October 2015 (UTC) Jgharston (talk) 00:33, 16 June 2018 (CEST) Jgharston (talk) 02:38, 4 September 2023 (CEST)