Search results

Definetely, and it's also my preferred modus operandi, since I come from the semiconductor industry. So for me, FPGA is real hardware. ;) I'm considering to open source it - at least the PCB files and software. I'm doing this for fun, not for any commercial "gains" (which is impossible, given...

As with all my projects, they are FPGA based. Inside the FPGA, I'm using a full 64-bit datapath for everything, and a highly pipelined memory transaction arbiter, controller, display engine and BitBlt engine. Even without using the BitBlt engine, at least on Amiga, the design is fully usable...

Hello Mac community, since I have gotten my first actual Macintosh last month (LC475), I must admit that the "Mac Bug" has bitten me, which is why I have now also pushed the trigger on getting a Macintosh SE/30 yesterday. In order to have fun with it, I decided to port one of my other Amiga...

Nope, takes longer than ordering the PCBs and parts separately. The card itself is consciously designed so that any person with at least moderate soldering skills can build oneself. ;) Sure, I have actually the same opionion about PCBs as Steve: they also should be nice to look at. ;) (Yes, I...

So, next milestone reached, the PCBs arrived. ;) Still waiting for the parts though.

A bit, yes, but I need first to focus on the base functionalities to provide a firmware for my card. If a project like mine encourages people to attempt doing an open firmware implementation, or uboot for m68k (which i really find a great idea), then I would be glad to help here. My intention...

Success! The ROM is now starting in MESS, and my initial attempt at writing a DAFB video driver for MAC is working now. :) Now I need to get this baby running on my real LC475.

Sorry, didn't have much time yesterday. Thanks a lot, that will probably help me tremendously to implement a more organised method to probe the hardware. On the Amiga, I have to rely on the location and ID values of certain custom chips and memory addresses, but I realize that the MAC was...

So, the bootrom is now taking shape, and I can now successfully run it on real hardware, which in this case, is a tiny small Amiga 600 (and YES, it has a 68040 CPU ;) ) It will be probably a week or two until the parts for the card arrive, so in the meantime, I am actually thinking about how...

No problem, feedback is always welcome. :) What my boot rom is can be called a "BL0" loader. Modern SoCs have it often embedded in their mask rom on the silicon die, my card has it on-board to ensure that, no matter what extrinsic conditions apply, there is always a piece of code where you...

Thank you for your understanding. :) I actually know Claude personally, and he is a very nice and capable person, who does it with the same passion and motivation as us all. Speaking of.... The bootrom starts now to show a sign of life! :) I'm currently developing this on WinUAE Amiga...

Since the cpu socket needs to be elevated to re-route the power and some signal lines, it lies above the middle part of the SIMMs, so that won't also be a problem.

Sure, but again, the ROM monitor is for development / emergency use cases only, and not really an operating system in itself. I try to keep it as modular as possible, but also simple, with a size <=32k. I'm writing a very simple I/O system, which includes the basic support for Serial, Keyboard...

Some question to you guys - as I said, I am currently writing the low-level boot ROM for the card, which can autodetect the System (Amiga/MAC) and also defines a system "sub-type" identifier. On the Amiga, this is actually relatively straightforward, because the sub-type can be reliably...

Thanks, yeah, this would basically be my intention. But it must work first. ;)

I suppose that must be viewed by use-case. Regarding FPU-heavy applications, I suppose the same limitations apply to any MAC, which has no FPU, like an 68LC040. On the other hand, every LC060 has been manufactured in 0.42um process (they even do have a dedicated mask set), so they can ALWAYS...

Speaking of DOING, PCBs are now ordered. ;)

As I am a semiconductor guy, I would always propose solutions which are in-line with the actual design process of semiconductors. ;) That's how I personally derive my definition of judging what is "real hardware". But, similar to the Amiga community, there are no uniform standards on how to...

Well, then I better get started on the low-level monitor software then. ;-)