BLITTER RE-CREATION THOUGHTS

General discussions or ideas about hardware.
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exxos
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Re: BLITTER RE-CREATION THOUGHTS

Post by exxos » Wed Jul 31, 2019 9:12 am

Hopefully all that glitters won't be on fire again :lol:

:bravo: :coolpics:
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PaulJ
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Re: BLITTER RE-CREATION THOUGHTS

Post by PaulJ » Wed Jul 31, 2019 2:19 pm

exxos wrote:
Wed Jul 31, 2019 9:12 am
Hopefully all that glitters won't be on fire again :lol:

:bravo: :coolpics:
Just keep in mind all that glitters is not gold!! :mrgreen: :mrgreen: :mrgreen:

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rubber_jonnie
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Re: BLITTER RE-CREATION THOUGHTS

Post by rubber_jonnie » Wed Jul 31, 2019 7:01 pm

That is awesome work guys, it really is.

Of course knowing that I like to build and test stuff, you have a willing volunteer if you need one :)
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
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Icky
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Re: BLITTER RE-CREATION THOUGHTS

Post by Icky » Wed Jul 31, 2019 11:12 pm

:cheer: All that Glitters is golden :cheer:

We have a booting STFM with an FPGA Blitter Board (Sparkalaphobia).

Now although it boots, we are getting test results its performing at 58% of a stock Blitter. We need to do some more work to get it up to normal speed.

However that said we are now truly on the road towards the ST Remake FPGA Chipset era.



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Re: BLITTER RE-CREATION THOUGHTS

Post by rpineau » Thu Aug 01, 2019 7:08 am

:bravo:
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2

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Re: BLITTER RE-CREATION THOUGHTS

Post by dhedberg » Thu Aug 01, 2019 8:33 am

Wow! That's quite an achievement! Congratulations!
Daniel, New Beat - http://newbeat.atari.org. Like demos? Have a look at our new Falcon030 demo and feel the JOY.

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Re: BLITTER RE-CREATION THOUGHTS

Post by Cyprian » Thu Aug 01, 2019 9:44 am

awesome!
Lynx II / Jaguar / TT030 / Mega STe / 800 XL / 1040 STe / Falcon030 / 65 XE / 520 STm / SM124 / SC1435
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Re: BLITTER RE-CREATION THOUGHTS

Post by Maximilian » Thu Aug 01, 2019 6:30 pm

NIce!!!

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Re: BLITTER RE-CREATION THOUGHTS

Post by Icky » Sun Aug 04, 2019 1:41 pm

Posting some GB6 benchmarks to show where we are currently. We think that the Blitter is under performing due to how the state machine works in the core and we are looking into this. We did a test of the Blitter at 16MHz to see how it was behaving but it created screen corruption. Managed to get the results from GB6 in that mode by running all the tests then turning the blitter off and running the ALT RAM test to clean the screen corruption when it refreshes.

I learnt something new that by clicking on the individual test text in GB6 runs just that test.

First image is of the FPGA Blitter running at 8MHz against a stock STFM without a Blitter
IMG_4256.jpg
IMG_4256.jpg (148.44 KiB) Viewed 1253 times

Second image is of the FPGA Blitter running at 8MHz against a stock STFM with a Blitter
IMG_4255.jpg
IMG_4255.jpg (142.75 KiB) Viewed 1253 times

Third image is of the FPGA Blitter running at 16MHz against a stock STFM with a Blitter
IMG_4254.jpg
IMG_4254.jpg (153.36 KiB) Viewed 1253 times

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Re: BLITTER RE-CREATION THOUGHTS

Post by PhilC » Sun Aug 04, 2019 8:26 pm

Looking good nonetheless. The hardest bit is to get it running in the first place. The tweaking will take time but I'm willing to bet you'll be able to see improvements almost with every step.
If it ain't broke, test it to Destruction.

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