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A simple PDS adapter with 2 slots for the IIci, so just 8 lines in the BoM for SMT (two for resistors, four for capacitors, small switch & a single 1G3157 IC switch). JLCPCB breakdown for 5 boards: Merchandise Total $48.87 Shipping $20.22 Customs duties & taxes $13.82 Grand Total: $82.91...

Given the many discussions on capacitors replacement & the whole polymer vs. tantalum vs. ceramic, here's an interesting video I just discovered on the subject: James Lewis - They're JUST Capacitors Voltage impact on ceramic capacitance is also discussed in this article: Temperature and...

For those designing for 5V hardware... XC95*XL are gone. Along with Spartan II and Spartan 3, plus more. https://docs.xilinx.com/v/u/en-US/XCN23009 Darn.

I don't know why I feel happy about it, but for some reason Renesas still manufacture some variant of their "QSpan II" Processor-to-PCI Bus Bridge, which has native support for the 68040 bus. They are bit pricey though. Theoretically, one could build a PDS'040 <-> PCI bridge board to be able to...

Hello all, Of course it was coming :-) Following the NuBusFPGA and IIsiFPGA, here comes the QuadraFPGA, adding the Highly Desirable Macintosh Interface to Macintosh Quadras. It's very similar to the IIsiFPGA, but is designed to connect to the Quadra PDS slot and talk to the 68040 there...

Hello, I'm looking for help in making sure how the PDS040 is wired in relation to the KEL connector. If you own a PDS040 device and some way of checking continuity on a PCB, maybe you can help me :-) In the relevant apple documentation, the pins are numbered in relation to the actual connector...

Hello all, Following the NuBusFPGA (thread here), here comes the IIsiFPGA, adding the Highly Desirable Macintosh Interface to the Macintosh IIsi. The IIsiFPGA is the same concept than the NuBusFPGA, uses the same FPGA daughterboard, but is designed to be connected to the 120-pins DIN 41612...

Hello all, I've built for my IIsi a new PDS adapter with a 68882 FPU socket, PLCC version. I got myself a PLCC 68882 rated for 33 MHz from what I believe to be a reputable vendor on eBay. My design includes an external 32 MHz oscillator (MXO45HS-3C-32M0000, couldn't find 33 MHz one in stock)...

Hello, I've mentioned my crazy project of interfacing a FPGA (board) with a NuBus Mac in another thread. I'm opening a new dedicated thread as there is a significant update now: This show the naked PCB on the left, the populated version without the required daughterboard in the middle, and the...

Hello, Is there some known way to 'rejuvenate' the plastic from the PCI-era Power Macintoshes ? Not for look, just to make them less brittle, they seem to break when you just look at them. Alternatively, is there some 3D-printable replacement parts or other solution available ? I'm looking at...

Hello, Might be of interest to some of you, so I'll repost some old messages to the 'rescue@sunhelp.org' mailing list ; brief version: * The SAS controller is flashed with a Sun ROM to get OpenBoot/OpenFirmware support * I did get my G5 Quad to boot from a SAS drive on a SAS controller, but as...