So playing around with possible layouts , its far from fun
Pretty much everything is going to have to go "external" to the blitter header pins, as the routing "inside" the header pins will be hard going with such small gaps.
I guess as its a test board, its not going to matter much how it looks anyway. It would be nice to squash it down enough to fit in a normal STFM, as that will be where its tested.. and as blitters are hard to find now...
Ultimately the core needs testing out fully by a few people, it helps the STF project and helps Wolfgang with more testing on his code cores...
BLITTER RE-CREATION THOUGHTS
Re: BLITTER RE-CREATION THOUGHTS
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
I'm willing to bet you've already thought of these two suggestions but:
How about putting the chips on either side of a multi layer board?
or stacking one pub on top of another, sandwich style if you get my meaning?
How about putting the chips on either side of a multi layer board?
or stacking one pub on top of another, sandwich style if you get my meaning?
If it ain't broke, test it to Destruction.
Re: BLITTER RE-CREATION THOUGHTS
It is something I am considering, I was mostly trying to get all the SMT on one side, its assembling double sided boards its pretty tricky :-\Forgottenmyname wrote: ↑Fri Sep 07, 2018 4:34 pm How about putting the chips on either side of a multi layer board?
I know what you mean yes, what puts me off is it would need more header pins, ideally smaller pins which already shown on the image, but these are the tiny to solder by hand.. I could use larger pins, but is making the whole thing larger again..Forgottenmyname wrote: ↑Fri Sep 07, 2018 4:34 pm or stacking one pub on top of another, sandwich style if you get my meaning?
In terms of size, probably the double sided board would probably be best option overall I think... That's assuming it is physically possible to route it.. I guess worst-case is a four layer board...
I think it does makes sense though...
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
Going to be interesting to route that, with all those narrow pins in close proximity. Might have a better chance with the small chips rotated 90 degrees. I take it the smaller chips aren't available as DIPs? would take more room but more room for routing and the possibility of putting sockets over header pins etc.
If it ain't broke, test it to Destruction.
Re: BLITTER RE-CREATION THOUGHTS
Once I finished doing some naming on the pins, I'm going to try routing it.., at first glance I think be possible on two layers I don't know until I try...
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
Looks like it will route...
Buffers on top layer, PLD on bottom, it should route direct from buffers to PLD without to much messing about...
Buffers on top layer, PLD on bottom, it should route direct from buffers to PLD without to much messing about...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
you can count on me...
how much for such a fpga blitter?
Lynx I / Mega ST 1 / 7800 / Portfolio / Lynx II / Jaguar / TT030 / Mega STe / 800 XL / 1040 STe / Falcon030 / 65 XE / 520 STm / SM124 / SC1435
DDD HDD / AT Speed C16 / TF536 / SDrive / PAK68/3 / Lynx Multi Card / LDW Super 2000 / XCA12 / SkunkBoard / CosmosEx / SatanDisk / UltraSatan / USB Floppy Drive Emulator / Eiffel / SIO2PC / Crazy Dots / PAM Net
http://260ste.atari.org
DDD HDD / AT Speed C16 / TF536 / SDrive / PAK68/3 / Lynx Multi Card / LDW Super 2000 / XCA12 / SkunkBoard / CosmosEx / SatanDisk / UltraSatan / USB Floppy Drive Emulator / Eiffel / SIO2PC / Crazy Dots / PAM Net
http://260ste.atari.org
Re: BLITTER RE-CREATION THOUGHTS
Not sure yet.. The blitters I was selling before were a silly £28 due to high costs in obtaining the things, I don't expect the cost to be more than that.. but could be close.
With such a coded core.. it is of course possible to add functions.. not sure what, that's up to the coders to think up what might be possible/useful..
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
OCD issues...
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: BLITTER RE-CREATION THOUGHTS
Is it me or the vodka....
.. and why do I want to put a smiley face in the middle...
.. and why do I want to put a smiley face in the middle...
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.