The TVGACRTC program allows the adjustment of video display parameters so that images are optimally sized and centered on the screen. Adjustable parameters include:
- Horizontal size and position
- Vertical size and position
- Pixel frequency
1. The program is started from the DOS prompt by typing in TVGACRTC from the SPEA directory.
2. The first section of the program is used to defina a given name for the adjustments to be made.
3. Press ENTER to add a new monitor entry and type in the name of the manufacturer, followed by ENTER keystroke.
The program will allow any name to be typed in.
4. Type in the associated comments for the monitor settings and press ENTER.
5. A mode table will be displayed, presenting all the adjustable modes.
6. This table is traversed through the use of the up/down arrow keys.The mode highlighted is the selected mode for the adjustment.
7. Select the mode to be adjusted and press ENTER.
8. Select the desired pixel rate by scrolling the list using the up/down arrow keys and press ENTER twice.
9. The screen alignment test pattern will then be displayed. The up/down arrow keys are used to adjust the vertical positioning of the screen.
10. The left/right arrow keys are used for horizontal alignment of the screen. The home/end keys are used for horizontal screen sizing and the page up/down keys are used for vertical screen sizing. Once the screen position and size is adjusted, press ENTER, followed by the ESC keystroke.
11. To save the settings, type Y and press ENTER. The program will then modify the CONFIG.SYS file.
12. At this point press ESC and reboot the system to enable the parameter changes.
