Essential API

+3DOS Essential API

Initialise +3DOS

Get the DOS issue and version numbers

Open and/or Create a file

Close a file

Abandon a file

Point to header data for this file

Read bytes from a file into memory

Read bytes from a file into memory

Read byte from a file, check for soft-EOF

Write byte to a file

Get the disk catalog

Get free space on drive

Delete a file

Rename a file

Boot from disk

Set the default drive

Set the default user