Gary C
Veteran Member
So experiment time
Put some messages (to the serial terminal) in the start of the GDEMO to track its progress and they all appear and repeat suggesting the program isn't crashing.
Put a halt in just after it calls PAGE to clear the screen.
It turns the Dazzler on but the screen just flickers with random lines at the bottom half of the screen.
I used a different page (which I believe I load HL (in this case 14H for a page of 2800)) and it still just flickers, even after the halt instruction. Reset and set 0E to show page 2800H and its mostly random apart from a black square
Changed the call to INITG to 20H (which I believe should give 4000H which worked with KSCOPE) and exactly the same.
Put some messages (to the serial terminal) in the start of the GDEMO to track its progress and they all appear and repeat suggesting the program isn't crashing.
Put a halt in just after it calls PAGE to clear the screen.
It turns the Dazzler on but the screen just flickers with random lines at the bottom half of the screen.
I used a different page (which I believe I load HL (in this case 14H for a page of 2800)) and it still just flickers, even after the halt instruction. Reset and set 0E to show page 2800H and its mostly random apart from a black square
Changed the call to INITG to 20H (which I believe should give 4000H which worked with KSCOPE) and exactly the same.