6530 Programmer's Guide

Conversational Mode Operation

6530 Programmer’s Guide

2-51

Esc -

1B 2D

7A (hex values)

where:

is the exit error-level (an ASCII decimal value)

Execute Self Test (Esc z)

This command sequence is used at the factory to run self-tests on

terminals (not terminal emulators).

Shift Out to G1 Character Set (S0)

The S0 control character (0EH) shifts the 6530 to the G1 character set.

Thus, graphics characters in the G1 set are displayed on the screen. (The

G1 set is the same as the alternate character set supported on the

workstation or PC.)

The S0 character is interpreted independently of the current state of any

escape sequence. Only graphics characters sent to the display are affected.

Control characters within escape sequences are not shifted.

Shift In to G0 Character Set (S1)

The S1 control character (0FH) shifts the 6530 to the standard G0

character set.

Function Keys

The user can perform an application-defined function by pressing

function keys. In conversational mode, the function keys are F1 through

F16 (unshifted or shifted). On workstation or PC keyboards with only 10

function keys, the 6530 maps F11 through F16 to Alt-F1 through Alt-F6,

respectively. On workstation or PC keyboards with only 12 function keys,

the 6530 maps F13 through F16 to Alt-F3 through Alt-F6, respectively.

Your application program can assign any operation to these keys. When

one of the function keys is pressed, the 6530 locks the keyboard and

transmits a message to the host. The function key message has the

following general format:

SOH

keycode cursor