DMA port "update" ideas..
Re: DMA port "update" ideas..
Didn't know the MEGA ST had a internal port.. Will look into it...
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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.
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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: DMA port "update" ideas..
OK so literally a internal port then... I've no idea what addons are for it, but makes sense to add it.
I was also half plotting of adding a full DMA header row to access all the DMA pins.. thought was to hi-jack the databus and bypass the DMA chip itself.. but not looking in that direction really now.. with FPGA DMA also available , we can actually push faster speed once we have a faster MMU/RAM access speeds.
I guess for sh*ts and giggles, if someone is bored enough, clock the DMA at 16mhz and see if it still behaves
I was also half plotting of adding a full DMA header row to access all the DMA pins.. thought was to hi-jack the databus and bypass the DMA chip itself.. but not looking in that direction really now.. with FPGA DMA also available , we can actually push faster speed once we have a faster MMU/RAM access speeds.
I guess for sh*ts and giggles, if someone is bored enough, clock the DMA at 16mhz and see if it still behaves
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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: DMA port "update" ideas..
IMP - pure evil DMA...
I guess its possible the drive could run a bit faster.. but its bottlenecked by ST-RAM anyway... I mean peters special drive can run twice as fast as ultrasatan with special hardware and software, so the DMA transfer is capable of double speeds.. So 16MHz DMA could work.. if Ultrasatan can keep up
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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: DMA port "update" ideas..
I'll give it a go tomorrow night - just been checking at what speed Gigafile can run at.exxos wrote: ↑Sun Oct 21, 2018 10:49 pmIMP - pure evil DMA...
I guess its possible the drive could run a bit faster.. but its bottlenecked by ST-RAM anyway... I mean peters special drive can run twice as fast as ultrasatan with special hardware and software, so the DMA transfer is capable of double speeds.. So 16MHz DMA could work.. if Ultrasatan can keep up
Its supposed have max transfer rates at 1800Kbps read and 1200Kbps write and an using it with an original Atari ST is supposed to be 1200Kbps read and 1000Kbps write.
So I should be able to detect improvement if it works.
Re: DMA port "update" ideas..
That be super cool if it does clock fasterIcky wrote: ↑Sun Oct 21, 2018 11:53 pm I'll give it a go tomorrow night - just been checking at what speed Gigafile can run at.
Its supposed have max transfer rates at 1800Kbps read and 1200Kbps write and an using it with an original Atari ST is supposed to be 1200Kbps read and 1000Kbps write.
So I should be able to detect improvement if it works.
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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: DMA port "update" ideas..
Ingo
| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
| Atari 1040STE@32MHz | Amiga 1200 (ACA1220) | Atari 800XL (U1MB, SIDE2) | Atari 130XL (Sophia DVI) | C64 (1541 Ultimate II, Rev3 RFMod Replacement) | TI 99/4A (F18A, 32k, FlashROM 99) | Sinclair ZX Spectrum 128 (Stereo, DivMMC) | Amstrad CPC664 (512k, M4 Wifi) | ... |
Re: DMA port "update" ideas..
Even better! That can't fit vertically in the DMA header though surely ?
EDIT:
Never mind.
https://lotharek.pl/productdetail.php?id=50
Think I will have to get one of those and see where it could be located on the STF board with a suitable adapter.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
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.
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: DMA port "update" ideas..
I have just ordered a internal and external version with the MEGA ST adapter kit..
Early xmas prezzies for me
Once I get them, I can start plotting where the best location would be to mount the connector and fixing holes etc..
Early xmas prezzies for me
Once I get them, I can start plotting where the best location would be to mount the connector and fixing holes etc..
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
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.
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: DMA port "update" ideas..
It's the internal one that I have. Did work great until the sd card died.
If it ain't broke, test it to Destruction.