[rescue] Mac IIfx compatible NuBus video card.

[Ian Finder]

Well, the current video card I have in it has a PeeCee style HD-15
connector. I'm using it with a SiliconGraphics-badged multisync
monitor so SOG and all that jazz is accounted for. (One can never own
enough SGI monitors). I suppose which adapter I need will be based on
which NuBus video card I get to replace this one... Which, it sounds
like at this point, may not be the issue at all.

Still, all the caps are clean and sealed, the RAM and ROM seated, the
PRAM is zapped and powered, but the video is still blank- although it
must be carrying a signal because the display wakes up and gets sync.
It was all working within hours of my first post, except I think one
of the PRAM batteries was also shot. (Both have since been replaced
for good measure)

A connected scsi disk does not seem to seek, by the way, when the
machine powers up, but this is likely IIfx scsi voodoo.

To conclude, WTF Apple?!

- Ian F

On 10/26/09, gsm at mendelson.com <gsm at mendelson.com> wrote:
> On Mon, Oct 26, 2009 at 01:17:18PM -0400, Andrew Jones wrote:
>
>>I don't know which one Macintoshes used. I find support for
>> composite and sync-on-green to be unpredictable in LCDs.
>
> The adaptors I have (and the chipset) supported:
>
>    Mode 1 is Composite Sync (1)
> 	Sync signal (15 Way D Male pin 3) connected to 15 Way HD Female pin 13
>
>    Mode 2 is Composite Sync (2)
> 	15 Way D Male pin 3 & 15 connected to 15 Way HD Female pin 13
>
>    Mode 3 is Sync on V
> 	15 Way D Male pin 12 connected to 15 Way HD Female pin 14
>
>    Mode 4 is Sync on H
> 	15 Way D Male pin 15 connected to 15 Way HD Female pin 13
>
>    Mode 5 is Separate Sync
> 	15 Way D Male pin 12 connected to 15 Way HD Female pin 14
> 	15 Way D Male pin 15 connected to 15 Way HD Female pin 13
>
>    Mode 6 is Sync on Green
>
> They were designed to support almost anything available at the time.
>
>
> Geoff.
>
> --
> Geoffrey S. Mendelson, Jerusalem, Israel gsm at mendelson.com  N3OWJ/4X1GM
> _______________________________________________
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
>

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   Ian Finder
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