Mac IIsi - SoG?

[Jules Richardson]

On 10/27/2015 09:18 PM, Al Kossow wrote:
> here is a mirror of the tech note that describes the pinouts and sense codes
>
> https://web.archive.org/web/20040222182709/http://developer.apple.com/technotes/hw/hw_30.html
>
>
> The RBV ASIC in the SI only knows about the original 8 sense codes.

I just got it running a minute ago! I found a note on Herb's 
retrotechnology site:

"The newer Macintosh II Video Cards and Macintosh IIci built-in video 
require that pin 4 (SENSE0) be connected to Ground to signal the connection 
of a 640 x 480 monitor. Do not connect pins 7 or 10 as they are unused on 
original Macintosh II Video Cards and there are built-in pullup resistors 
on the newer Macintosh II Video Card and Macintosh IIci to terminate these 
pins when not in use."

... and leaving 7 & 10 nc, and grounding pin 4 has indeed kicked it into 
life (currently running on an ELO touchscreen LCD, it remains to be seen 
whether any of my other LCDs or CRTs have problems with it)

cheers!

Jules