Function 14h (20)        Sequential Read, Using FCBs

Reads the next sequential record from a file, then increments the
FCB's current block and current record fields.

On entry:      AH         14h
DS:DX      Pointer to an opened FCB

Returns:       AL         00h      If read was successful
01h      If EOF encountered and no data read
02h      If DTA too small (segment wrap)
03h      If EOF encountered and partial
record read

Network:       Requires Read access rights


Notes:         The sequential record number is taken from the
values in the current block (offset 0Ch) and the
current record (offset 20h) fields of the FCB. These
fields are automatically updated after the read
operation. The number of bytes to read is taken from
the record size field at offset 0Eh of the FCB.

The data is read in at the current Disk Transfer
Address (DTA). Use Function 1Ah to set the DTA. If
the transfer of data would cause segment wraparound,
an error 2 is generated.

If an EOF is encountered before a full record has
been read, the remainder of the record is padded to
the requested size with zeros.

See also: 0Fh
See also: 1Ah
See also: 21h
See also: 27h
See also: 3Fh
See also: FCB

14h (20) Sequential Read, Using FCBs