| CL_ALL |
0DAF | Clear the screen |
| DD_ASK_1 |
017B | Check to see if unit 1 is present |
| DD_CHECK_SECTOR |
0169 | Check a sector |
| DD_DRIVE_STATUS |
017E | Check drive status |
| DD_ENCODE |
0184 | Set copy protection encode routine |
| DD_EQUIPMENT |
0181 | Ask what type of drive |
| DD_FORMAT |
016C | Format a track |
| DD_INIT |
015A | Initialise the disk driver |
| DD_INTERFACE |
0157 | Check for the disk drive interface |
| DD_L_DPB |
018A | Initialise DPB for a given format |
| DD_L_OFF_MOTOR |
019C | Turn off motor |
| DD_L_ON_MOTOR |
0196 | Turn on motor |
| DD_L_READ |
0190 | Low level uPD765A read command |
| DD_L_SEEK |
018D | Seek to required track |
| DD_L_T_OFF_MOTOR |
0199 | Start motor off timeout |
| DD_L_WRITE |
0193 | Low level uPD765A write command |
| DD_L_XDPB |
0187 | Initialise XDPB for a given format |
| DD_LOGIN |
0175 | Login a new disk |
| DD_READ_ID |
016F | Read a sector identifier |
| DD_READ_SECTOR |
0163 | Read a sector |
| DD_SEL_FORMAT |
0178 | Select a standard format |
| DD_SET_RETRY |
0160 | Set try/retry count |
| DD_SETUP |
015D | Setup disk parameters |
| DD_TEST_UNSUITABLE |
0172 | Check disk is suitable to write to |
| DD_WRITE_SECTOR |
0166 | Write a sector |
| DOS_ABANDON |
010C | Abandon a file |
| DOS_BOOT |
012A | Boot from disk |
| DOS_CATALOG |
011E | Get the disk catalog |
| DOS_CLOSE |
0109 | Close a file |
| DOS_DELETE |
0124 | Delete a file |
| DOS_FLUSH |
0142 | Write any pending data to this drive |
| DOS_FREE_SPACE |
0121 | Get free space on drive |
| DOS_GET_1346 |
013C | Set current cache/ramdisk location |
| DOS_GET_EOF |
0139 | Get the end of file (EOF) position |
| DOS_GET_POSITION |
0133 | Get the file pointer |
| DOS_INITIALISE |
0100 | Initialise +3DOS |
| DOS_MAP_A |
0154 | Map drive B to unit 0 or 1 |
| DOS_OPEN |
0106 | Open and/or Create a file |
| DOS_OPEN_DRIVE |
014B | Open drive as a single file |
| DOS_READ |
0112 | Read bytes from a file into memory |
| DOS_READ_BYTE |
0118 | Read byte from a file, check for soft-EOF |
| DOS_REF_HEAD |
010F | Point to header data for this file |
| DOS_REF_XDPB |
0151 | Point at XDPB for this drive |
| DOS_RENAME |
0127 | Get free space on drive |
| DOS_SET_1346 |
013F | Rebuild the sector cache and RAM disk |
| DOS_SET_ACCESS |
0145 | Change access mode of an open file |
| DOS_SET_ATTRIBUTES |
0148 | Set a files attributes |
| DOS_SET_DRIVE |
012D | Set the default drive |
| DOS_SET_MESSAGE |
014E | Enable/disable disk error messages |
| DOS_SET_POSITION |
0136 | Set the file pointer |
| DOS_SET_USER |
0130 | Set the default user |
| DOS_VERSION |
0103 | Return DOS issue and version numbers |
| DOS_WRITE |
0115 | Write bytes from memory into a file |
| DOS_WRITE_BYTE |
011B | Write byte to a file |
| ONERR |
5B3A | Paging subroutine |
| RAMRST |
5B5D | RST 8 instruction used by ROM 1 to report old errors to ROM 3 |
| REGNUOY |
5B2A | Paging subroutine |
| RST_0 |
0000 | Start the computer |
| RST_1 |
0008 | Report an error |
| RST_2 |
0010 | Print A to the output stream |
| RST_3 |
0018 | Collect character |
| RST_4 |
0020 | Collect Next character |
| RST_5 |
0028 | FP Calculator |
| RST_6 |
0030 | FP Calculator |
| RST_7 |
0038 | Maskable Interrupt Handler |
| STOO |
5B10 | Paging subroutine. Entered with interrupts disabled and AF, BC on the stack. |
| SWAP |
5B00 | Paging subroutine |
| YOUNGER |
5B21 | Paging subroutine |