05 November 2010, 13:58 | #281 |
electricky.
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05 November 2010, 14:31 | #282 | |
WipEout Fanboi
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Quote:
And the totally different idea seems to be something you have had in mind for some time by the way you speak... I wonder what that is... |
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05 November 2010, 14:58 | #283 |
Registered User
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05 November 2010, 15:31 | #284 | |
electricky.
Join Date: Jun 2010
Location: out in the wild
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Quote:
Jens |
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05 November 2010, 15:34 | #285 |
Registered User
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We are very happy to have these in stock for Christmas. The prototype cards looked great when we viewed them recently at Amiwest Show.
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05 November 2010, 23:25 | #286 |
Banned
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06 November 2010, 00:41 | #287 |
Registered User
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Location: Scotland
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06 November 2010, 03:30 | #288 |
Registered User
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Location: California, US
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just out of curiosity, what percentage speed increase will be seen with this new 030 card over a stock 1200?
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06 November 2010, 04:59 | #289 |
Zone Friend
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Location: Aussie
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06 November 2010, 12:51 | #290 | |
Banned
Join Date: Apr 2009
Location: France
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Quote:
I calculate that this new 030 card is 2.5 times faster than an A1200 + fastram or 5 times faster than an A1200 without fast ram |
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06 November 2010, 13:28 | #291 |
Registered User
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Location: Amigaville
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In non-technical terms: Like $h*t off a shovel
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06 November 2010, 16:30 | #292 |
Cookie Muncher
Join Date: Nov 2008
Location: Spain
Age: 49
Posts: 239
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Definitelly, i'll buy one A1200 accelerator. ^^
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06 November 2010, 16:53 | #293 |
Posts: n/a
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I can't wait to speed up my A600
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06 November 2010, 18:22 | #294 |
Registered User
Join Date: Jul 2002
Location: Sweden
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I will buy one A600 version, thanks for making this!
(Perhaps next December, a CD32 version could be released? :-) ) |
06 November 2010, 20:46 | #295 |
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Location: Madrid / Spain
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Sorry if I missed an answer for this before:
-Removing the Amiga 600 internal floppy drive is going to be an option or a requirement? I'm not planning to use the Indivision ECS at this point and I would like to keep the disk unit at its place. -If the floppy unit is not taken away, could there be heat issues when using the Amiga 600 for a long time? As I mentioned a few pages ago, I pretend to carry my Amiga 600 to local retro-gaming parties where It could be expected to be turned on for a whole evening or even a whole day. Thanks! -- |
06 November 2010, 23:01 | #296 | |
electricky.
Join Date: Jun 2010
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Quote:
Jens |
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06 November 2010, 23:24 | #297 |
electricky.
Join Date: Jun 2010
Location: out in the wild
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Just gained another 1.5% speed!
As I mentioned earlier in this already-fairly-long-thread, the memory controller wasn't perfect yet. The 68030 can fill a cache line using a "burst" mechanism, where it takes advantage of the fact that reading consecutive memory locations is much faster than reading random locations.
I had implemented this "burst transfer" at a fairly early stage, but did not optimize it "to the max". A cache line of the 68030 consists of four longwords (32-bit words). If a memory location is not available in the cache, the CPU will try to read the whole cache line, starting from the location where it needs the next word. If the first access is at the start of a cache line, then words 0-1-2-3 are fetched at top speed from memory. If word #2 is required first, then the burst order is 2-3-0-1. Notice the wrap-around in the middle of the burst - this is essentially "going backwards in memory". Here's where statistics come into play: Usually, a program is executed "forward", so the previous words (in this case words #0 and #1) are "most probably" not required. I have now managed to abort the burst transfer at the wrap-around stage, which gained roughly 1.5% speed. The ACA630-25 now cracks the 6-Mips-barrier, and if you want to examine the speed of the final 1230 cards, I have also attached AIBB modules of the two 1230 models. We'll set up and program the assembly machines tomorrow, assembly is planned for monday. This is SMT assembly only - the THT assembly will have to wait until the PGA sockets have been delivered. After I got "way too many" offers with delivery time "A", and got a different delivery time "B" with B >> A, I was fed up with tricks like that and ordered my own tooling for PGA sockets. The good side about this is that we won't only have white PCBs and white A1200 connectors, but also white PGA sockets. Since the ACA630 will be "all black", I'll use my stock of black PGA sockets for those. Jens |
07 November 2010, 11:09 | #298 |
MI clan prevails
Join Date: Jul 2010
Location: Belgrade, Serbia
Posts: 1,443
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This is so cool and inspiring that I just have to open up and clean/wash my Amigas today so that I can enjoy the hardware
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07 November 2010, 13:33 | #299 |
Soldering Ironman
Join Date: Sep 2008
Location: Germany, NRW
Posts: 79
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Would you guys like some real-life practical comparisons?
Here is ADOOM Shareware running on my A1200 in 320x200 AGA. The accelerator is a Blizzard 1240, which means an 68040 with 25Mhz: As you can see, the game is running with 10fps. Pretty impressive! How can a 68030 CPU compete against a 68040? ADOOM Shareware running on the upcoming ACA1230-56, 68030 with 56Mhz: WHAT??? 15fps??? Our 68030 design yields 5 fps MORE than a 68040??? Yes, thanks to a high speed SDRAM memory interface and optimal access to the Amiga chip bus! For complete humiliation, I'm going to post a comparision with the Blizzard 1230 later... Last edited by Oliver_A; 07 November 2010 at 13:42. |
07 November 2010, 14:22 | #300 |
Banned
Join Date: Jan 2007
Location: France
Posts: 655
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Hum... And with a 040@40 ??
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