[Coco] OS-9 Level1 Version 02.00.00 FYI

[Allen Huffman]

On Apr 17, 2020, at 10:11 AM, Dave Philipsen <dave at davebiz.com> wrote:
> 
> Actually keyboard interrupts are not used in OS9. The keyboard is scanned at a regular interval determined by the interrupt routine but it’s actually the video system which is generating the interrupts which OS9 also uses for multitasking

Doesn’t the CC3 add one, but it was wired wrong or something and couldn’t be used? Or was none for serial?

Does it have a Vector table default that VCC is maybe setting up wrong so it’s jumping somewhere that is benign normally but OS-9 L1 has code there?