Thanks for the thought, but historically, your theory makes sense for the PC VidCards, but probably not for Macs. That said, unless one of the two jumpers on this particular Pivot Card might be compensation for the differential between the IIsi's and SE/30's bus clocks . . .
HRMMM!!!! another test in the works, my ASSumptIon was that they were both for Pseudo Slot addressing, as are the two jumpers on the MacCon NIC.
The Color Pivot II Cards were made for specific monitors to be used on specific Macs running at specific bus speeds in their PDS implementations. This was way back in the Neolithic, if not the Paleolithic DTP ERA which drove the development of FPD and TPD monitors for less expensive multi/large monitor workstations than those of the Jurassic 's Mega$ MiniComputer CAD License "seats" of the day.
The IIsi/SE/30 and the LC slots . . . :-/
. . . dunno, good point, none of many LC or IIsi/SE/30 Cards I've tried over the years have needed bus speed compensation, IIRC.
Maybe the Crystal Can on this card is independent of the PDS bus speed . . . I don't know if this makes swapping crystals more or less viable a solution. :?:
Hey! Electronics & Clock Chipping Boffins, how 'bout a little help here!
)
HRMMM!!!! another test in the works, my ASSumptIon was that they were both for Pseudo Slot addressing, as are the two jumpers on the MacCon NIC.
The Color Pivot II Cards were made for specific monitors to be used on specific Macs running at specific bus speeds in their PDS implementations. This was way back in the Neolithic, if not the Paleolithic DTP ERA which drove the development of FPD and TPD monitors for less expensive multi/large monitor workstations than those of the Jurassic 's Mega$ MiniComputer CAD License "seats" of the day.
The IIsi/SE/30 and the LC slots . . . :-/
. . . dunno, good point, none of many LC or IIsi/SE/30 Cards I've tried over the years have needed bus speed compensation, IIRC.
Maybe the Crystal Can on this card is independent of the PDS bus speed . . . I don't know if this makes swapping crystals more or less viable a solution. :?:
Hey! Electronics & Clock Chipping Boffins, how 'bout a little help here!
)