TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

USETI [OPCODE 074]
For disk, n is a block number, when the file is open. When the call
is not preceded by a LOOKUP, n is the address of a word where the
block number is stored. This is a super-USETI call, because this
method allows you to specify a block number, greater than 18 bits,
relative to the beginning of the structure.
The action of the USETI calIon disk devices is determined by the
value of n as follows:
Value
-n, n
2 to 10 (octal)
Meaning
The nth extended RIB is read.
-1
o
1 to file size
file size to 777770
IO.EOF is set in the I/O status word,
an end-of-file on the next INPUT.
next OUTPUT, the data is appended
file.
The prime RIB is read on the next INPUT.
causing
On the
to the
The block specified is read on next INPUT.
If the file size is greater than or equal to
777770, it is recommended that you use
FILOP. function .FOUSI.
The IO.EOF bit is set in the I/O status word,
causing an end-of-file on the next INPUT.
RELATED CALLS
o
o
o
FILOP.
SUSET.
USETO
COMMON PROGRAMMING ERRORS
o
o
Not synchronizing I/O with USETI or USETO.
Not initializing a device on channo.
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