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New Project: Prodigy 040/060 Card
Posted by: Oliver_A on 2026-01-16 01:31:51 So, next milestone reached, the PCBs arrived. 😉 Still waiting for the parts though.
Posted by: croissantking on 2026-01-17 09:31:08 Ooh, nice! No pick and place?
Posted by: zefrenchtoon on 2026-01-17 10:08:28 So, next milestone reached, the PCBs arrived. 😉 View attachment 94472 Still waiting for the parts though. I love the use of Apple Garamond font 😍
Posted by: sircabulon on 2026-01-17 18:09:45 I have 8 68060 cpus in my desk at work. I'd love to make this work on my carrera card in my iici cuz reasons.
Posted by: Oliver_A on 2026-01-18 07:32:55 Ooh, nice! No pick and place? 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. 😉 I love the use of Apple Garamond font 😍 Sure, I have actually the same opionion about PCBs as Steve: they also should be nice to look at. 😉 (Yes, I have read those stories) Currently fighting with CUDA, cobbling together sources from the Super Mario Rom, and Linux.... AND, I also might have something else for you guys ready some time, as I am just about beginning to get warm. 😉
Posted by: CC_333 on 2026-01-18 08:20:00 Sure, I have actually the same opionion about PCBs as Steve: they also should be nice to look at. 😉 (Yes, I have read those stories) I think I've read those stories too. Even before I knew of them, though, I've made an effort to neatly run cabling in PCs I've assembled over the years mainly for three reasons: so they look nice, are easy to work on, and have good airflow so they stay cool. Even though nobody will see it, it makes me feel good somehow (one exception: I actually took a PC I built to the local computer shop back in 2008 or so when I was doubting my abilities (I was experiencing a very difficult crashing problem that I was hoping they could help me solve; a couple years later, I learned it was due to an unseemly combination of a particularly bad power source and a defective piece of hardware), and the technicians there were quite impressed with how neat and tidy it was). c
Posted by: nathall on 2026-01-20 23:24:35 I think I've read those stories too. Even before I knew of them, though, I've made an effort to neatly run cabling in PCs I've assembled over the years mainly for three reasons: so they look nice, are easy to work on, and have good airflow so they stay cool. Man, I’m the polar opposite of this mentality, although I respect people who pride themselves in this sort of thing. My cable management is non-existent, my recapping jobs look like a toddler did them with uncut leads, etc, and I always take the quick and dirty approach. My reasoning is, if it does the same job but takes half the time, who cares what it looks like if I’m the only one that sees it? I get crap from my co-workers for it, but my response is always the same: I’m results oriented. 😃
Posted by: CC_333 on 2026-01-20 23:34:44 Man, I’m the polar opposite of this mentality, although I respect people who pride themselves in this sort of thing. My cable management is non-existent, my recapping jobs look like a toddler did them with uncut leads, etc, and I always take the quick and dirty approach. My reasoning is, if it does the same job but takes half the time, who cares what it looks like if I’m the only one that sees it? I get crap from my co-workers for it, but my response is always the same: I’m results oriented. 😃 To each their own, I guess. It doesn't really matter how you run the cables, so long as everything works as intended when you're done. c
Posted by: Oliver_A on 2026-01-21 09:36:28 I'm a bit stuck here, does anyone have the following document online somewhere? I have only seen excerpts of it, but I guess the full document would really help me here. 🙂 Thanks!
Posted by: joevt on 2026-01-21 15:41:41 I'm a bit stuck here, does anyone have the following document online somewhere? The ERS and cuda firmware source code were posted at https://68kmla.org/bb/threads/getti...dialog-after-system-7-boots.45952/post-511487
Posted by: Oliver_A on 2026-01-23 03:22:32 Thanks, perfect! 🙂 Believe me, it's not easy as an outsider to find such information if you search for "CUDA". 😉 So, in the meantime, I started to assemble the prototype.... No time wasted.
Posted by: croissantking on 2026-01-23 04:24:24 Thanks, perfect! 🙂 Believe me, it's not easy as an outsider to find such information if you search for "CUDA". 😉 So, in the meantime, I started to assemble the prototype.... No time wasted. View attachment 94785 It looks really nice. How much work to the ROM will be needed to get it working with an 040? I am guessing as well that we could push an 040 chip to the absolute limit (likely 55-57MHz for 02E31F mask and later) without the usual logic board chipset contraints.
Posted by: Oliver_A on 2026-01-23 04:29:53 Thanks! 🙂 The ROM already works on an 040 (see Amiga - in fact, I'm using a 040 for a bring-up of the design), and, as I mentioned, my goal is to maximise speed on both 040 and 060. The good thing is that no overclock of the mainboard bus is needed, so a 50MHz 040 works with a 25MHz towards the mainboard, but 50 MHz to the SDRAM (which, in this case, runs at 100MHz). On an 060, it's then 100MHz bus to the SDRAM, and 25MHz to the mainboard. Already installed Codewarrior on my LC475 and started to write a Toolbox-based app to manage the FPGA and flash configurations. 😉
Posted by: Oliver_A on 2026-01-26 08:33:35 Small steps... Board has now more components, AND, CUDA and myself are now friendly with each other (sort of) 😉 So DeMon runs now both on MAC and Amiga with same features. Still waiting for the power regulator, since Mouser cancelled the order for some unknown reason, so I had to get it elsewhere. @Arbee Can you please check, it seems the MAME code emulates a full 68040 here on the LC475 (no FPU exception thrown when I execute an FPU instruction), instead of an 68LC040.
Posted by: Arbee on 2026-01-26 19:55:01 Yes, it's known. Throwing an F-line trap on FPU instructions for the '040 gives a sad Mac error and I haven't investigated why that is so MAME always emulates a full '040.
Posted by: joevt on 2026-01-26 23:36:39 Can you please check, it seems the MAME code emulates a full 68040 here on the LC475 (no FPU exception thrown when I execute an FPU instruction), instead of an 68LC040. Is the emulated LC475's ROM choosing the Product Info from the Universal Tables that a real LC475 would?
Posted by: Oliver_A on 2026-01-27 00:07:28 Is the emulated LC475's ROM choosing the Product Info from the Universal Tables that a real LC475 would? 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 mean, you must probe the CPU in some way, it's nothing you can automatically retrieve from a table. The 68060 actually has an additional register (PCR) which contains the revision number in order to successfully detect an LC060. In my LC475, I have fitted a full 040, and everything is fine.
Posted by: konrad on 2026-01-27 04:00:55 It looks really nice. How much work to the ROM will be needed to get it working with an 040? I am guessing as well that we could push an 040 chip to the absolute limit (likely 55-57MHz for 02E31F mask and later) without the usual logic board chipset contraints. Is it possible to reach 57 MHz? Does anyone have a video or screenshot? Regards
Posted by: croissantking on 2026-01-27 04:45:50 Is it possible to reach 57 MHz? Does anyone have a video or screenshot? Regards Why not stick one on an accelerator and try for yourself?
Posted by: croissantking on 2026-01-27 06:36:39 Is it possible to reach 57 MHz? Does anyone have a video or screenshot? Regards https://68kmla.org/bb/members/zigzagjoe.25791/#profile-post-1326
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