> The Serial Switch control panel is designed for systems that contain
> intelligent I/O processors (IOPs). Only the Macintosh IIfx, Quadra 900,
and
> Quadra 950 have IOPs on the ports for the floppy disk, ADB, and serial
I/O.
> These ASICs feature a built-in microprocessor, DMA controller, timer, and
> external Static RAM (SRAM), used to off-load floppy disk, ADB, modem, and
> printer port interrupts. If you use Serial Switch on a Macintosh that has
no
> IOP, you will see the error message you report.
>
> Now I wonder that since this floppy was not shipped with the 950, maybe it
> does not have a "IOP" like it is supposed to. What do you think? Am I on
to
> something here or am I all wet?
All wet :)
The IOP is part of the motherboard. Changing the floppy drive wont affect
that. The ROM SIMM may have had early mods to the IOP manager that allowed
it to be turned on and off. It may not have been a ROM at all, arent IIfx
simms 64 pin?
Jon Hart,
Senior Developer,
Daemon.
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