by zuiko21 » 13 Feb 2012, 21:05
Now that you mentioned the
Radius Color Pivot IIsi...
I got one of these, without the external connector. According to my probing with the 'scope,
the 15-pin header on it matches Apple's DA-15 socket, as commonly numbered -- at least, grounds are where they should and so are the sync signals; and the R, G & B channels supply signal out of the sync periods. But no matter what
sense code I hooked, it seems to send a horizontal sync of about 69 kHz -- compatible with both 21" and
Portrait modes. Couldn't get my 'scope to hold on vertical sync, so I can't confirm if it's 75 Hz or whatever.
On the software side, the card shows up on
Slot Info as slot 9 or A, depending on the JP1 setting. But not in the Monitors control panel

Testing done on a IIsi via the built-in video.
BTW, a
Dayna E/si30 ethernet card I have (also without connectors) hooked to the
pass-thru PDS on the Radius, will prevent booting at all, no matter the jumper settings. The Dayna alone shows up fine as Slot 9.
2xSE/30, Colour Classic, Mac II, IIx, 3xIIsi, LC, LC475, LC575, Power Quadra 700, Quadra 840AV, 2x5200, 7200/90, 7500/132, 7500/233, 7600 G3/450, PowerBook G3 Bronze, iMac DV SE, MacMini G4, MacMini Core2Duo, iMac 21.5" i5... and SGI Indy R5K