06 June 2021, 20:08 | #1 |
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Overclocking 060 up to 90+MHz
Alright, so my Apollo 1260 with Rev 6 CPU is working nicely with 90Mhz and 100. However, it gives me a black screen with 96 or 98MHz oscillators. I wonder why, some vid timings are incorrect? How do I fix that?
PS Sysinfo screenshot here (for 90MHz) is just because I love sysinfo! |
07 June 2021, 08:57 | #2 |
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Reaching 90MHz (and being stable!) with an Apollo 1260 is already a great result in itself.
I seem to remember back when I was interested in pushing mine to 100MHz as well that some obtained it by removing the 3.3V power board and injecting directly both 3.3V and 5V on the card. You should be able to find something about that here on EAB. If it still doesn't work, you might be limited by the CPLDs. Not all are equal |
07 June 2021, 14:02 | #3 |
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I have a 105mhz Falcon without voltage modification. I guess this is probably just luck.
One of my WarpEngine’s works fine at 96mhz without modification. |
07 June 2021, 23:04 | #4 |
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Yeah, okay then, however I was asking if there is a reason for 90MHz and 100 - working for me while 96 and 98 no working, and how may I fix that
I suspect video timings are getting broken |
09 June 2021, 23:18 | #5 |
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Welp, somehow I missed that entirely.
AFAIR the A1200 has chipset timings decoupled from the CPU, so I don't think that's the issue. Maybe it's just the Apollo's clock divider? |
12 June 2021, 12:38 | #6 |
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Guys....
All CPU's are Manufactured to the Highest Spec. Soak Testing will Bin CPU's by Functionality, MMU, FPU etc. Then they Bin them EC, LC etc. All types of CPU are then Soak tested for their Safe Stable speed. Silicon Speeds will always vary from Batch to Batch due to small irregularities in the Fabrication process. Not all CPU's are Equal. |
12 June 2021, 12:51 | #7 |
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@kppot what kind of cooling have you got on your Apollo 1260?
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13 June 2021, 01:27 | #8 | |
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Quote:
But it does not tolerate 96 or 98 This i s the whole question The rev 6 does not require cooling that badly, though I do have some passive and a fan inside the case, just to keep the whole case ventilated |
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13 June 2021, 01:28 | #9 |
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14 June 2021, 12:15 | #10 | |
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Quote:
I was asking you a question I just wanted to know what you were using to cool it since you are running it at those speeds. Just in case I ever decide to do the same for an experiment myself. I saw a little device you can buy that lets you change speeds easily using one crystal but different jumpers. I was considering trying it, but wondered if I need extra cooling if overclocking to 90MHZ or 100MHZ. Last edited by rabidgerry; 15 June 2021 at 23:54. |
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15 June 2021, 20:51 | #11 | |
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No hard thinking about the rev 6 cooling, just some passive radiator and a fan, for me, it is upper case based fan, which is more effective other than CPU radiator fan The rev 6 will work or won't, you will see it right away, unlike old Pentium, those were able to run Windows but hanged on later. Last edited by Kppot; 15 June 2021 at 21:02. |
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15 June 2021, 23:57 | #12 | |
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How is it when you run at 90mhz and 100mhz? No need to apologise |
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16 June 2021, 11:27 | #13 |
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When I ran the WE for a bit at 96mhz I had an 80mm fan on it but no heatsink - it was absolutely fine. I was more concerned with the extra 8mhz on the accelerator’s cplds, and that’s why I’ve returned back to 80mhz for normal running.
The 105mhz Atari one has a large heatsink and fan. |
16 June 2021, 11:39 | #14 | |
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Quote:
Well, we may measure that by quite few titles 1. Quake is 15, sometimes 16 FPS with timedemo 1, which is rather good, @80 it was 12. The gameplay is still somewhat sluggish 2. Alien breed 3D II is playable and enjoyable at full window 3. Duke Nukem port still requires one or even two window size decrease to be playable Otherwise, it is about 72 000 with Sysinfo! |
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16 June 2021, 13:18 | #15 |
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Quake needs fast memory speed, that’s why it is not that fast on an Apollo even with high MHz 060. It would be very interesting to see it run on a high clocked Warp1260!
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16 June 2021, 18:24 | #16 | ||||
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Don't laugh but what is Quote:
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Quote:
I can also play Shadow Warrior and Powerslave. But I'm sure a speed boost would help them even more so. I noticed you are from Russia, where Amiga's popular in Russia? Hope you don't mind me asking |
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16 June 2021, 19:25 | #17 |
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Cplds are complex programmable logic devices - the glue logic that helps the accelerator run. I don’t actually know if the WarpEngine uses cplds but it’s kind of a catch-all term for different logic ICs, I think. The chips could be PALs or GALS (programmable array logic and generic array logic).
WE stands for WarpEngine - it’s an accelerator by Macrosystem from the 90s |
19 June 2021, 21:58 | #18 | |
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Basically A500, it is still hanging around from Perestroika times. This is the most common model, everybody here were oldfags, and deny A600 or A1200 A1200 was quite popular in mid of 90ties, with local TV stations. Few dozens were sold to Dubna city (think of local Silicone Valley) Then the digital TV come so quickly, they sold all A1200 for almost nothing, I got my A1200 for 80 USD back in 2005, and it was really pain to use - no memory, no CF card no anything, so I sell it. A600 is still pretty rare, even though few scalpers pick them on eBay and later sell for crazy amount of money. You may get A600 for like 300 quids and A1200 for 600 quids in Russia, most probably it will be uncapped one from eBay. Also, there are small community with high-end hardware like here (A1200 Ultimate upgrade guide) https://habr.com/ru/post/92862/ |
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19 June 2021, 23:32 | #19 | |
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Quote:
Last edited by grelbfarlk; 20 June 2021 at 00:01. |
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20 June 2021, 09:41 | #20 |
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Indeed. Not worth overclocking by a few MHz in my opinion. This stuff is nearly as old and fragile as my knees
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