Black Box A/S-4 manual Changing Video Attributes and Commands for VDU

PROTOCOL CONVERTER MODEL A/S-4

6.7 Changing Video Attributes and Commands for VDU

The menu obtained by selecting item D of the main menu is shown in Figure 7. This menu allows the operator to define the parameters which will give the proper video highlighting to the fields on the VDU screen.

CURRENT:

Application = SDLC/SNA 3274/76 Interactive

VDU = NEW VDU

Keyboard = STANDARD

Cmd chars for different VDU video displays for different type fields

A-Exit

B-Start of video cmd: CTL [

C-End of video cmd:

D-Video cmd takes up a space on VDU?N

Middle of cmd: For Data Type of:

E-(=UNPROTECTED, ALPHANUMERIC, LOW INTENSITY

F-(=UNPROTECTED, ALPHANUMERIC, HIGH INTENSITY

G-(=UNPROTECTED, NUMERIC, LOW INTENSITY

H-(=UNPROTECTED, NUMERIC, HIGH INTENSITY

I-)=PROTECTED, ALPHANUMERIC, LOW INTENSITY

J-)=PROTECTED, ALPHANUMERIC, HIGH INTENSITY

K-)=PROTECTED, NUMERIC, LOW INTENSITY

L-)=PROTECTED, NUMERIC, HIGH INTENSITY

M-(=NONDISPLAY & NONPRINT

Enter Letter:

Figure 7

The host CPU can send commands to its terminals to define how the video display will be printed. An example is a display using highlighted areas for data entry. The A/S-4 can perform this type of display presentation for almost any terminal. In operation the A/S-4 intercepts the host video commands and translates them into the commands that the attached VDU needs to perform the function.

If you are using special displays then you must use selections B, C and D to set up your display attributes. Consult your VDU users manual to determine which characters are used to create the type display you need and enter those characters in the fields as needed.

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