+dhe Posted July 29, 2022 Share Posted July 29, 2022 I see these terms in a goodly number of messages that go by. I look them up, and six months later they are gone again. This time I doc'ed 'em for me, hope others find this information useful. From: E/A PHM3055 - PG 301 Level 3 - File Level I/O. >00 Open >01 Close >02 Read >03 Write >04 Restore/Rewind >05 Load >06 Save >07 Delete >08 Scratch Record >09 Status From: Tech Drive Low Level I/O Level 1 routines — the lowest level — allow direct sector read/write and disk formatting. >10 Read/Write Individual Sector >11 Format Disk Level 2 routines - introduce the concept of a "file"; provide for file renaming and protection modification; allow file access by logical sector; and enable the programmer to control the number of disk buffers available. >12 Modify File Protection >13 Rename File >14 Transfer Direct Input File >15 Transfer Direct Output File >16 Buffer Allocation 3 2 Quote Link to comment Share on other sites More sharing options...
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