13 October 2017, 01:08 | #2001 | |
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Turn on CPU FASTROM and retry this. With the ROM in cacheable FASTRAM it means the drivers run entirely inside cache.. I agree you can get better out and out disk performance but the CPU is stalled anyway if the ram is contended so you dont really get better system performance. Actually surprised at how slow your RAM access is. |
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13 October 2017, 02:57 | #2002 | |
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The Blizzard 1260 cannot be accused for having very fast memory. However, the ram-handler is quite a cpu hog in 3.1 atleast. If you LoadModule the ram-handler from 3.9, you will get better figures for RAM:. Blizzard1260 ram speed plus verification that rom is in fast: Code:
9.Ram Disk:> bustest fast rom BusSpeedTest 0.19 (mlelstv) Buffer: 262144 Bytes, Alignment: 32768 ======================================================================== memtype addr op cycle calib bandwidth fast $60310000 readw 66.5 ns normal 30.1 * 10^6 byte/s fast $60310000 readl 112.1 ns normal 35.7 * 10^6 byte/s fast $60310000 readm 111.1 ns normal 36.0 * 10^6 byte/s fast $60310000 writew 81.4 ns normal 24.6 * 10^6 byte/s fast $60310000 writel 163.8 ns normal 24.4 * 10^6 byte/s fast $60310000 writem 163.7 ns normal 24.4 * 10^6 byte/s rom $00F80000 readw 66.4 ns normal 30.1 * 10^6 byte/s rom $00F80000 readl 111.0 ns normal 36.0 * 10^6 byte/s rom $00F80000 readm 111.3 ns normal 35.9 * 10^6 byte/s Not implying that dma controllers helps with raw disk transfer speed, just wanted to show that they can be fun when the system is under load . Last edited by patrik; 13 October 2017 at 02:59. Reason: controller, not transfer |
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14 October 2017, 23:41 | #2003 |
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15 October 2017, 01:11 | #2004 |
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15 October 2017, 08:40 | #2005 |
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15 October 2017, 14:24 | #2006 |
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No but it runs fine at 25 & 36 MHz, so I don't think I need them.
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15 October 2017, 16:27 | #2007 |
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15 October 2017, 17:16 | #2008 |
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@ aalenppc & Black68:
i am starting to suspect Your CPU's guy's. i have same type CPU's Steve uses in his streams, he and also me have no probs running TF's on 50Mhz, even more, i am pretty sure, ceramic CPU will also run @60Mhz without heatsink (without FPU), however, i can't test it as i haven't 60Mhz oscillators here. @alenppc: i am not wondering Your CPU fails if You try to overclock it: http://www.amibay.com/showthread.php...0-board-25-Mhz this is 25Mhz CPU, it will do it's job nice @25 or even @36Mhz, if You push it higher - it will go hot and fail, so just try different CPU's and You will be surprised regards, -Viktor |
15 October 2017, 17:20 | #2009 |
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I have 33 and 50 MHz cpus for testing, but I could not get them to run reliably at anything above 36, but to be honest I need more time to play with it, change the R3 value, etc.
R3 at 10k seems to work better for higher frequencies but maybe I need to go lower. |
15 October 2017, 18:03 | #2010 | |
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http://www.ebay.es/itm/1PC-MOTOROLA-...72.m2749.l2649 As I said before, with last firmware I can go up to 48mhz but without FPU. With FPU WHDLoad gives many "Illegal Instruction" errors. I've changed R3 to 1k but doesnt make any difference as far as I can notice. I'll try 10k. Bought an Amiga Rev5 mainboard to do more tests, as I only have a couple of Rev.6 boards now. Waiting for it to arrive. |
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15 October 2017, 18:38 | #2011 | |
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I have also "illegal Instruction" with last firmware (i am using 50Mhz rev.2 firmware, my cards are working fine on it) will try to remove FPU and test without it on last firmware. Last edited by 8 Bit Dreams; 15 October 2017 at 18:48. |
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16 October 2017, 01:55 | #2012 |
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My guess on the "illegal instruction" (I get it too @50MHz in diagrom) is that the pullup resistor for the FPU is not large enough leading to inconsistent detection of the FPU. I'm going to play around with some values as suggested above - glad it's not just me!
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16 October 2017, 04:05 | #2013 |
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OK, I had some time tonight so I was able to get the rev2 to run at 50 mhz at last! It only works with the beta 50m firmware though (the one that requires the FPU), the new firmware just yellow-screens to hell and back. Still, pretty neat... The IDE now does 6.6 mb/sec :P
I experimented with various R3 values, and 47k is still the most stable. The lower you go the less stable it is. In fact, with lower values the new firmware doesn't even do anything but perm-yellowscreen, while with 47k it changes colours a bit and even occasionally clicks the floppy drive. Ok, now time to pull out the old ISSI RAM experimental card and see what it does with this firmware... Last edited by alenppc; 16 October 2017 at 05:06. |
16 October 2017, 12:15 | #2014 |
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dalek, we are getting "illegal instruction" while trying to start game thru WDHLoad, not diagROM...
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16 October 2017, 16:37 | #2015 |
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[ Show youtube player ]
Modern Vintage Gamer fitting his TF530 Last edited by amigadude; 16 October 2017 at 16:48. |
16 October 2017, 17:00 | #2016 |
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Hey, I know that card
Brilliant video! |
16 October 2017, 17:14 | #2017 |
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16 October 2017, 17:53 | #2018 | ||
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16 October 2017, 19:05 | #2019 | |
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i use 50Mhz firmware dated with 14.05.2017 it works really nice |
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16 October 2017, 19:16 | #2020 | |
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