Summary

1. Applied, when needed, mode adjustments (when switching from one to another) to the display of the Mach8/32.
2. Made a dedicated function for setting up the CRT parameters in preparation of a mode display change/switch.
3. Finally fixed a bug in NT 3.1's built-in drivers in 8bpp/24bpp/32bpp mode about pixtrans reads not taking account the odd destination widths in bitblt using pixtrans r/w (similar to a now-fixed 8514/A issue of NT 3.5x).
4. Fixed a text rendering regression found in XFree86 2.x on linux guests using the Mach8/32/8514/A chips. (The bug was about the degree nibbles being used incorrectly).

Checklist

• Closes #xxx
• I have tested my changes locally and validated that the functionality works as intended
• I have discussed this with core contributors already
• This pull request requires changes to the ROM set
  • I have opened a roms pull request - https://github.com/86Box/roms/pull/changeme/
• This pull request requires changes to the asset set
  • I have opened an assets pull request - https://github.com/86Box/assets/pull/changeme/

References

Provide links to datasheets or other documentation that helped you implement this pull request.