TMS9918A VDP + Arduino Uno R3 Help

Projects General Guidance
1

I want to make an 8-Bit x86 1980's era computer using the Intel 80188 CPU. The main parts of this project are the following:

  • CPU: Intel 80188
  • VDP (Video Display Processor): Texas Instruments TMS9918A
  • Keyboard Controller: Intel 8279
  • SRAM: 640k
  • ROM: Windbond W27C512-47Z 64K

I want to test out the VDP and Keyboard controller with my Arduino Uno R3 before I build the computer itself. I wanted to test the VDP and I found this YouTube video about using the chip with an Arduino Mega, so there is where my question comes in...

I counted all of the Digital Pins, only 6 of them are non-PWM. Can I use the PWM Digital pins as regular digital signals to connect to the VDP's data-bus pins?

2

Sure, the PWM function is an extra selectable feature. They work fine as digital pins.

3

Thank you for the info!

4

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