... all of the devices that one can plug into the 32-bit PDS slot found on the SE/30 and the IIsi.
The definitive SE/30 IIsi 030 PDS card and adapter breakdown. Scroll down to comment #17
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The definitive SE/30 IIsi 030 PDS card and adapter breakdown. Scroll down to comment #17
One device not mentioned above is the IIsi Nubus adapter. As noted in this thread, this adapter does not work in the SE/30I have all of the devices that one can plug into the 32-bit PDS slot found on the SE/30 and the IIsi. The two PDS slots are electrically identical.
They are physically identical to the cache slot found on the IIci and IIvx, but not electrically identical. Plugging in a card meant for the IIci/IIvx into the IIsi or SE/30 will destroy your motherboard (I have a burned IIsi motherboard to prove it).
Now for the cards:
Asante made an Ethernet card for the IIsi that has a pass through PDS port allowing horizontal placement of the card. It also has a socket for a Math coprocessor (68882). This is the best ethernet card for the IIsi since it allows you to still connect an SE/30 or IIsi accelerator.
Don't be tempted to plug in the IIci cache card or any card designed for the IIci PDS slot, you will burn the IIsi board.
Apple Made a IIsi Adapter board with a soldered on Math coprocessor rated at 20Mhz. / However, I don't think highly of these: Their only purpose is to change the orientation of the PDS slot from vertical to horizontal, allowing you to use longer SE/30 form factor cards.
If you are overclocking your IIsi, you can't use this adaptor: The Math coprocessor is rated at 20Mhz and nothing more, unlike the 68030 CPU, although rated at 20Mhz, will run to at least 25Mhz.
SuperMac made a DUAL PDS adaptor for the IIsi and sold it with the IIsi Video Spigot. It looks similar to the Daystar adaptor, but the slots are aligned and both are IIsi & SE/30 PDS slots.
The lower slot held the spigot and the upper slot held the digitizer board, but they can hold any SE/30 or IIsi PDS card (assuming it fits in the case). The upper slot has access to the rear panel port, while the lower card doesn't (unless you hack it). Supermac's Video Spigot had an RCA plug that bent upwards to exit alongside the video card's monitor socket.
The Daystar cards should have a notice along the lower slot that says "for Power Cache only."
The upper slot is a IIsi PDS slot for usual PDS slot devices, e.g. video card or Ethernet Card. The lower slot is actually a IIci/IIvx slot.
You can plug in any card designed for the IIci into this slot: Daystar's Universal PowerCache, Apple's Cache Card, and others. You cannot plug in any device designed for the IIsi or Se/30 into the lower slot marked "For PowerCache Only"
The reason there is a Math Coprocessor socket on the board is so you can have a math coprocessor when you use an 030 Cache card (from Apple or Daystar). The socket should be empty when using a powercache with a Math Coprocessor.
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