Recent content by Oliver_A

I guess I can only cover all possible cases if I, really, do wire all 3 interrupt lines to the FPGA. Maybe this is possible, depending on which answers I get in my previous post. ;-) By default then, I am using: Slot #9: $f9000000 / $90000000 - assuming that a card, which allows another one...

How would you define an applicable ruleset in a scenario where multiple PDS cards are stacked on top of each other, and there is no general resource allocation mechanism in place? If you stick by Apple's rules, the SE/30 is a single slot computer, hence, I do have the sole choice which...

Thanks, I thought that this might be the case, which is why I added a "solder blob" jumper on the PCB for experiments. Does a video declaration ROM need a dedicated IRQ at all? My graphics core can actually sync to a different update rate by making use of the display processor I have...

You're welcome, it's really fun doing something different besides my Amiga projects. :-) I am, btw, already preparing my graphics core to be adapted to this board, while at the same time, I am finishing the Amiga version. Even thought it might be not trivial to add hardware accelerated...

Thanks! :-) That is indeed an intended use-case, especially since the card will be able to mirror the output of the internal video on the HDMI. Actually, I like the experience. Compared to AmigaOS (sorry guys), MacOS architecture looks very old-fashioned (I was shocked to discover that a lot...

Still need to figure this out, as I am completely new to the Macintosh, and get my SE/30 restored first (still, one part missing). It is a "Revision 0" prototype, and I do consider to modify it, depending on how well this design works. What I strongly intend to retain is the small, handy form...

Stalling a bit, because I am on a business trip this week. Rest assured, once I have reached next milestone, I‘ll post an update here. ;)

Update, mainboard is coming together now… And my DoubleVision SE/30 graphics card is already fitting perfectly, waiting to be developed on this configuration. ;)

So, first prototype assembled…. And it already makes a great addition to my soon to be completed SE/30 restpration project. ;) To be continued….

These are coming as NOS parts. ;) What was important for me to salvage were things like the white mini DIN connectors, matching the case color. Nowadays, you can only get black ones, which work, but alter the original look.

Update: All of the important parts, and most of the lesser ones successfully salvaged. Now waiting for the PCB and the new parts.

Or, and it‘s a speculation on my side now, the ROM is actually right, and MAME generates a wrong exception stack frame. An 68LC040 generates a different kind of stack frame in case of a missing FPU than an 68030 or 020 executing a unimplemented coprocessor instruction.

Thanks for all the tips, just waiting for all the parts to arrive. I'll be also recapping the power supply and analogue board. Due to the problematic weather conditions in the US, shipments from Mouser are currently very slow. The most difficult aspect will be to find out if GLUE, or any other...

Slowly delving into the Macintosh specific software support of the Prodigy. ;)

My theory is that, if an FPU exception (which is the actual behaviour of an LC040) causes a sad Mac on emulation, then something else is being done by the ROM beforehand in order to determine the CPU. But how does the ROM, then, can successfully distinguish between a full 040 and an LC040? I...