basic.readtx Statement/BASIC Program

basic.readtx

Command basic.readtx Statement/BASIC Program
Applicable release versions: AP
Category BASIC Program (486)
Description reads a tape record, converts it to hexidecimal, and assigns the value returned to a specified variable.

The length of the tape record is specified by the most recently executed "t-att" command.

The "then" clause is taken if the operation is successful.

Either "else" or "onerr" can be specified, but not both. If the tape unit has not been attached or if an end-of-file (EOF) mark is read, the "else" or "onerr" clause, if present, is executed. In addition, the "onerr" statement can be used to check for end-of-tape (EOT), tape unit not ready, parity error, or block transfer error. See the system(0) function.

See the "then/else construct" for an explanation on the use of "then" and "else" clauses in statements that allow or require them.
Syntax readtx variable [then | else | onerr statement.block]
Options
Example 

		  

			

			Purpose
			
		  

			

			Related
			
							basic.then/else.construct

							basic.readt

							tcl.set-device

							basic.onerr

							statement.block

							tcl.t-att

							basic.rewind

							basic.statements

							basic.readtl

							basic.system