Switch off. Insert the Character Generator into its place on the
Graphics board. Switch on. Your Nascom should now work normally but if you try
to put Graphics characters on the screen you will get white rectangles. If you
try to display a single graphics character or alternate spaces and rectangles
then it may not display properly. This is normal.
Switch off and insert your expensive Graphics ROM. This time when
power is applied it should work perfectly.
1 81L897 or 81LS95
2 24 Pin DIL sockets
1 20 Pin " "
1 16 Pin DIL Plug
1 luF Tant. bead Capacitor 10 v
1 Graphics ROM
1 Ribbon cable
1 14 Pin DIL socket
1 16 Pin " "
1 24 Pin DIL Plug
1 0.01 uF Ceramic Disc Capacitor
GRAPHICS BOARD FOR NASCOM 1