Using this POKE for the Lynx, the output to the screen can be inverted with a single command.

By using DPOKE &6273,-32, the normal-size characters are inverted and DPOKE &6273,-64 will print inverted large characters. The output can be reset by POKEing in the positive values.

This is a simple example program:

  10 CLS
  20 VDU 24,7
  30 PRINT "MIRROR"
  40 DPOKE &6273,-64
  50 VDU 5,5,5,5
  60 PRINT "MIRROR"
  70 DPOKE &6273,32

S. Gray
Tottemhoe, Nr. Dunstable, Bedfordshire