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At some point processes like this can turn into the quest for an entirely different computer running the OS from inside an actual Mac. Also, featuritis kills.

That's a great idea, really growing on me, most especially if it's designed to work directly off the PDS in the bottom of a TwinSlot adapter and has a passthru/form factor to be the bottom of a stack of cards in the SE/30. ;)

That's a great idea, it's really growing on me, most especially if it's designed to work directly off the PDS in the bottom of a TwinSlot adapter in the IIsi and so would have a passthru/form factor to be at the bottom of a stack of cards in the SE/30. ;) Neat stuff on form factors in his...

Apparently not. I started a thread over yonder asking about just that, but nobody reported any experiences. Was wondering about that given the results @Bolle reported in testing the Radius NuBus Adapter that @joethezombie found when we were working on the SE/30 PowerCache Adapter project. I'm...

It's a crazy project from many years ago, an offshoot of the SuperIIsi-AKA-SE/30's bane project. Was curious to see what you had to say about the concept of a 128MB hack for the IIsi. A new accelerator seems like a good idea for the somewhen, but NOBODY was doing anything like that back then...

https://68kmla.org/bb/index.php?threads/simmspender%E2%84%A2-iisi-memory-expansion-hack-reboot.29912/

Yep! Banks A & B are defined in the docs, A is the buffered Vampire Video kluge. There are quite a few, but much less adventurous IC to SIMM conversions in terms of pin count out there. Gotta get the SuperIIsi build up to match the SE/30 spec. Don't really need to though. Rocket33 will power...

Makes sense, in the DuoDock you have the same 25MHz system bus, NuChip and a 40MHz crystal. Maybe it's only the Radius NuBus adapter that's dependent upon system clock for timing? Curiouser and curiouser. :oops:

Yep, I know about the two full sets of connections for banks A and B on MDU, but most are available on the Bank A memory pads. It's been at least five years, so I'm thinking RAS2 would need to be jumpered from MDU along with A9 and A10 for six bodge wires in total to support 64MB in a Bank A...

Not slow if you're avoiding the Vampire Video anchor. ;) Best diagram I could come up with quickly from what I've posted on MLA: Here are the only three(?) lines you need to jumper directly from MDU above in order to address a high capacity 72-pin SIMM fom Bank A of the IIsi. ISTR there maybe...

Yep, Vampire Video slows things down, but it's only enabled if sense line signals are detected on the connector at startup and the buffering setup kicks in. As in pulling the Video ROM in the SE/30, $E built-in video also disappears from the Slot Manager Report in the IIsi. Moral of the story...

That's probably OK for a PDS Card expansion system, don't recall anything about memory issues with that relatively minor uptick? Contrary to LEM's Mythology, the IIsi system was never intended to be clocked at anything but 20MHz. Yes it shared many components with the IIci, but the 10MHz NuBus...

Interesting question about resolution! My WAG would be that the buffered main memory (Vampire Video) would be limited in ROM/memory map? Faster RAM is never a problem, it's addressed at the system clock at the same speed as specified RAM. Under spec/marginal RAM speed is a no go as it's not...

@Zane Kaminski what @ajacocks was lamenting would be lack of Ethernet if using a decent VidCard in Apple's standard PDS Adapter. Accelerator/Passthru risers are great, but won't solve that particular problem. If you have a TwinSlot riser, then two PDS cards will do the job if using an SE/30...

Check the PCB of the IIsi, can't imagine that setup being compatible in terms of height or expansion cubic interference even if a RA socket config?

Not true at all, especially so in the case of the Radius Color Pivot II/IIsi in combination with the Asante MacCon board for IIsi plugged into the RCPII/IIsi passthruslot. Provision is made on the two part breakout board of the MacCon. Just remove the ThickNet section from the 10bTsection and...

Since you're getting no image at all: 1 - have you checked to make sure the harness connection to the video board is firmly in place and undamaged? 2 - stick to testing at 640x480 and 800x600 which are 60Hz VGA outputs: ____VGA/SVGA setting in Column 3 of the table, looks to have 5 choices of...

What resolution are you trying to set up?

Nice snag! Love that thing. Not sure which one I have, SuperMac? But it's reported to be the same tech, if in a reintegrated/repackaged product. Radius bought SuperMac, simply rebranding the SuperMac's DSP card among other things IIRC. Very nice to see both boards for comparison. Ill have to...

Hiya, looks like I'll be getting a board thanks to fred1212! Shoot me your PayPal addy and I'll get the gift money right off. Shipping locale is 27523.