Apple // europlus

[Jim Battle]

Roger Holmes wrote:
> 
> On 19 Feb, 2008, at 18:00, cctalk-request at classiccmp.org wrote:
>> From: Tim Riker <Tim at Rikers.org>
>>
>> I'm not sure what a europlus version of the machine is though.
> 
> The euro means 110/240 volt switchable power supply. I don't think there 
> was any other change, though it was common to have a colour card (in 
> slot 7?) which took the NTSC signal, decoded it and re-coded into PAL. I 
> guess there was a corresponding SECAM card for France. As you probably 
> know, the plus mean floating point Basic.

That is odd -- years ago when I studied the video logic in the II+, 
there were jumper options for PAL that changed the video timing. 
Perhaps it wasn't good enough and thus the NTSC->PAL conversion boards, 
but the cut & jump traces were certainly there.

I could be mistaken, but I think another feature added by the + was the 
"color killer" feature -- a control bit that removed the color burst 
signal so that you'd get true B&W video when you just want straight text.