Nascom News­let­ter

appears on the next screen line and the required program nane is entered. The action of the comand im identical to the READ NAMED PROGRAM FILE command, with the exception that the required program is NOT loaded into mesory. The comand is used to check that a program file may be successfully read from cassette tape.

SEARCH FOR TAPE LABEL – USR(2)

Read a cassette tape and search for # tape label as written by the SYS-EX “I” command. Display the first label found on the top line ef the screen then terminate the commend.

The command may be used for positioning « tepe prior to using the WRITE NAMED PROGRAM FILE command. The tape drive LED is switched on between entry of the command and command termination. If a tape label is not found, the command nay be terminated by first stopping the cassette and then typing four ESC) (GHIFTIENTER) ch consecutive ESC characters read from the cassette tape recorder will have the sane effect.

WRITE NAMED PROGRAM FILE – USR(S) (CSAVE equivalent?

Weite the BASIC program currently in memory to cassette tape. The program is preceded bye file label containing the Specified progras name, The file label will be recagnised and Gisplayed in full by the SYS-EX commands “a”, "r"_ and “v” in addition to the WRITE and VERIFY NAMED PROGRAM FILE commands. The BAGICs CLOAD and CLOAD? commands ill also recognise the file label, but will use and display only the first character of the program name.

After entry of the UGR(S) statement, the prompt wNamer

appears on the next screen line and the name of the program to be written is entered on that line. The tape drive LED is then auitched on and, after # short delay, the file label followed by the file iteelf’is sent to the serial output port for mriting to tape. Finally, the tape drive LED i awitched off.

NB.

It is possible to escape from the above commands while the file name prompt is displayed on the scr#en. (ie, rNamer , vNaner + Waser) To do this, backspace over the promt or move the Cursor to another line before pressing ENTER, An error message wil] be produced, but no harm will be done.

RETURNING TO SYB-EX FROM BASIC

Tt 4s useful to have an equivalent of the HONITOR command which, instead of returning solely to NAS-GYS, returns to SYS-EX so that the full range of NAS-SYS and SYS-EX ‘keyboard commands