About This Page

At the right is a set of documents and emails I received from Karl Guttag regarding the TMS9918 and related VDP products, as well as some documentation on the TI Home Computer lines (TI-99/4A and related products) and 9900 family CPUs. It seems he's gotten a few inquiries over the years about the VDP and friends. :-)

There is a lot of interesting information, including how to decode the VDP's colors, how the 9918A's Graphics II mode came about, and so on.

I've just put the files I received here as I received them. I hope someone finds them interesting and useful. I know I did!