VPATCH Success

Up until now, to use a TFT display on the PC110 you need to run a program after boot. The original method is running CT65535.exe from Taka that updates the CT65535 registers as required which mostly works well except some XR values can be overwritten if you switch LCD/CRT with the Fn-Key and potentially some mode changes can cause unexpected issues. I then implemented an alternate method that updates the video bios in shadow memory and soft reboots. This method is almost as if the settings were from the factory and allows use of the Fn- key for CRT/LCD and ensures that it will work in all modes, however you still cannot enter Easy Setup and the change is lost on hard reboot. It was not much of an advantage over CT65535.exe, but the method of patching the binary bios image itself was a necessary step leading up to this flash updater.

Now that I have successfully managed to update the flash memory, I am able to apply the modifications directly which now allows full use of the system even Easy Setup.

I still need to do some additional work before I can make it available

  • Check that A/C power is connected and Battery is fully charged
  • Verify the bios is an expected bios
  • Check that no TSR is loaded that can interrupt the process.
  • Provide command switches to specify VGA-TFT, WVGA-TFT, DSTN (Origional)

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