My black and white Ti-99

[elviticus]

Well, I finally got all the hookups and fired up the ti-99 a friend gave me a while ago, and it all works great EXCEPT - it's in black and white! Other than this, it works fine - anybody know why this might be, and if there's anything I can do to fix it?

[+FujiSkunk]

Well, I finally got all the hookups and fired up the ti-99 a friend gave me a while ago, and it all works great EXCEPT - it's in black and white!  Other than this, it works fine - anybody know why this might be, and if there's anything I can do to fix it?

877572[/snapback]

 

The TI-99 (at least the 4/a) A/V port is similar to (maybe the same as) the C-64's A/V port. On the C-64, the video signal is separated into two signals called "chroma" (color) and "luma" (brightness). If you happen to conect only the "luma" signal to a standard composite monitor or television, you'll get only a black and white picture.

 

Assuming the ports on the TI-99 and the C-64 are the same, you should be able to find a third-party A/V cable that will work. Most third-party cables split off into four patch cords, and one of those cables combines the chroma and luma signals into a standard composite signal. A standard C-64 A/V cable (the kind that splits off into three patch cords) probably won't work.

 

Hope this helps.

[JB]

Well, I finally got all the hookups and fired up the ti-99 a friend gave me a while ago, and it all works great EXCEPT - it's in black and white!  Other than this, it works fine - anybody know why this might be, and if there's anything I can do to fix it?

877572[/snapback]

 

The TI-99 (at least the 4/a) A/V port is similar to (maybe the same as) the C-64's A/V port. On the C-64, the video signal is separated into two signals called "chroma" (color) and "luma" (brightness). If you happen to conect only the "luma" signal to a standard composite monitor or television, you'll get only a black and white picture.

 

Assuming the ports on the TI-99 and the C-64 are the same, you should be able to find a third-party A/V cable that will work. Most third-party cables split off into four patch cords, and one of those cables combines the chroma and luma signals into a standard composite signal. A standard C-64 A/V cable (the kind that splits off into three patch cords) probably won't work.

 

Hope this helps.

877591[/snapback]

http://99er.net/vidpow.html

TI AV pinout here, allegedly.

As the video chip they use outputs composite video natively, I'm somewhat skeptical as to it's accuracy.

 

http://pinouts.ru/data/AudioVideoC64_pinout.shtml

C64 AV pinout.

[Osbo]

TI99, Commodore 64, Atari 800XL and Tandy Coco 3 have the same monitor pinout. I'm using a monitor cable I originally made for my TI99 in all those computers.

[ComputerCollector]

Osbo, post a picture of the cable you made. Id like to see it

[Osbo]

Not really a clear picture, but here it goes...

 

I must correct myself. the coco3 has A/V ports in the back.

Edited June 21, 2005 by Osbo