Hi guys,
I did a video on M100 LCD repair a few weeks ago but for got to post about it here. Link below. As part of the diagnostic process, I took a program I found in the M100 archives and added a basic GUI so you can fill the screen black, clear the screen and load/save the screen. I used the alternating clear/black fill to test the segment drivers and the ability to save the screen RAM to test the RAM in the LCD drivers. When learning how the screen RAM load save worked it occurred to me that the RAM for the unused segment drivers is also unused. It got me wondering if anyone had ever used these bytes as a hidey hole for data, etc. It would be a pretty sneaky place to hide something. https://youtu.be/gtSlnKx51SQ Jeff Birt (Hey Birt!)
