Hacking Info On VTech Laptops

I found this blogspot that has some cool hacking info on the following VTech systems. I've posted all the ones on this first page on this blogpost.

• Z80 Processor (Used in loads of VTech laptops)
• Genius Leader 6000SL
  • Running a Raycaster demo with graphical mode, and in 20x4 text mode.
  • Hello World program w/custom font rendering
• VTech Parallel Buddy (Homebrew cartridge for various VTech laptops for custom code)
• VTech Genius Leader Dev Kit, VGLDK (Homebrew SDK for creating homebrew for the Genius Leader laptops)
• Genius Leader 4000 Quadro
  • Zork port on this system
  • Zork port again
  • CP/M port