Back in the 70s or 80s I wrote a c program for running a Tote at a Race Night - an evening where films of horse races are shown for people to 'bet' on the winner. Not really betting - more like a raffle - but my program enabled the odds for the eight runners to be displayed and updated as people placed 'bets', adding to the 'racecourse' atmosphere.
The program works completely in Text mode, mainly in 40-column mode to give large letters and numbers on the screen. (originally I used TV screens driven from the computer by a TV booster/multi output unit) The system worked fine in CGA, and even when VGA came along.
However, with the modern displays, I had a problem with the 40 column layout appearing twice, as though the screen was in two columns on an 80 column screen. Playing around with compatibility modes on my main PC enables a 'proper' display to appear, but I cannot get it to show correctly on my MAXDATA laptop.
At the advanced age of 69, I've forgotten most of what little I knew about c, so I am rather at a loss as to how to solve the problem - hence my arrival here.
I have attached the program to this post, in the hope that someone might have some ideas to help this old geezer.
Any assistance would be much appreciated.