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Cannot see your list due to the hardware failure of my monitor, sorry.
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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Could it not be that it's the graphics card? In that case I might have a solution. DIY Analog VGA for 8 bit processors. Without programmable logic that will be a bigger board with about a pound or two of discrete logic, so let's throw in another processor to manage the graphics resources and do the rendering and that DMA interface to talk to the main processor again.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Similar h/w v s/w on tape backups.
We used to backup a mini-computer which, to help reduce tape problems always re-tensioned the tape by running it from end to end and then back again before use. Them a new version of the tape came out - double the length, double the storage. This (obviously) took twice as long to re-tension. That was when we found out that there was a hardware 'fail safe' that if a tape spent too long rewinding, it assumed that the tape had snapped. So the new tapes were useless and were all thrown away (apart from the one that I have stashed away in my archive).
I have at least three other daft stories about that machine, but I'll save them for another day.
-------------------------
Then we got an IBM machine with nice cassette tapes. The backups to them could be sped up by using data compression. That was fine unless you needed to restore a machine - the data expansion was not available from a 'raw' machine so you could not rebuild from the backups.
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OriginalGriff wrote: My code worked, but the hardware just wasn't up to it.
I'm writing this one down for, erm..."future use".
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I don't think FAT32 is too much for an 8 bit based on the fact that I use it on 8 bit a lot. Specifically on the ATmega2560. Only issue is that chip can manipulate 32-bit integers (though not as a native word)
Fat32 is a bit more difficult to implement without that.
Try to see if you can use SPI to communicate instead of a UART? You can get 10s of MHz speeds
Nice thing is SPI can be used with SD cards since SD cards are SPI slave devices, if i recall anyway.
I don't know what you'd use to drive the SPI master from your setup - you could use another CPU, like an ESP32 to do it. But either way, SPI is where I'd start looking.
Real programmers use butterflies
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The little processor was able to fly to Jupiter, visit all the moons and steer the failing probe into Jupiter's atmosphere after surviving years in Jupiter's radiation belt. I think it can tackle the file system without too much help. 
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I'm not thinking so much as a coprocessor, but more just using it as something you can break SPI out into individual data pins with.
Real programmers use butterflies
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SPI is aserial protocal again and not extremely fast, at least not on the PIC microcontrollers I have seen. And that leads us to some other problems: Soldering SMDs, low voltage levels and level shifting. It's quite possible that I actually have raise the supply voltage to 6V in order to squeeze out a higher clock frequency, not lower it to 3.3V or even less.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I do animation @ 320x240x16bpp over SPI @ 26mhz on the regular.
I mean, you could use 4 wire, something like used by SDMMC - that would get you higher transfer rates and it's still basically SPI, but it has 4 lines instead of one.
Anything faster, and you're going to need some dedicated hardware - if you want to run NVMe you're not going to do it very easily, particularly without some sort of controller in the middle. Same with SATA even, I think.
So what level complicatedness (i hesitate to use "complexity" here) are you looking to deal with?
Are you willing to put a relatively sophisticated drive controller into the loop?
If not, I'd consider SDMMC. It can give you about 2.5MB/s if not more?
I'd have to look into it again. But actually you're going to be limited anyway, same way I was because of FAT32 sectoring preventing you from doing large reads, severely limiting your throughput.
That's going to be your biggest hurdle once you decide on the interface, I think.
If you want fast I/O, I'd say use a flat binary blob right on the drive.
Real programmers use butterflies
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VOLA - These Black Claws (Feat. SHAHMEN)[^]
I don't think any other band has made it into the SOTW as often as VOLA has.
I've known them since their debut in 2016 and I think I've had two SOTW's for every album since then (this one is the second SOTW from their third album, which will be released later this month).
They play pretty accessible metal, although it's quite poppy, if only because of the keyboard tunes and the singer's pleasant (clean) voice.
This song is a bit different in that it features Shahmen, a rapper.
I'm not a fan of rap in my metal, but VOLA (and Shahmen) does it quite tastefully!
Someone mentioned it's like KoRn meets Massive Attack and I can agree on that, although it also still sounds like VOLA.
SOTW and looking forward to the entire album! 
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Nice.
I personally don't like talking/monologue during a song, but overall, not bad.
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Great track  ... very listenable, mesmerizing riffs in many places, great visuals (but I had to shut my eyes at some moments ). Added them, perhaps again, to my list, thx ...
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Wow! That was six minutes of mindless excrement, except for the dog. The dog was good. The blonde should have bigger hooters, too.
Will Rogers never met me.
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Haters gonna hate, never thought you to be one of them 
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To each his own! That's why we get choices.
Will Rogers never met me.
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Supreme lover lost the right to new technology startup. (9)
I win, and I'm up on Monday!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
modified 14-May-21 7:40am.
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I always think I've either constructed the clue badly or it's a very good one when I get no takers 
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Yep! And I'm not at all sure which way I went ... I mean, I thought it was a good one, but ... :shrug:
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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So, which was it?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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It was a good clue
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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Working full screen RDP on a different server in a different timezone.
Kept taking lunch and other breaks off that time clock. so far I ate lunch before 10am. I went for an afternoon break at noon and just noticed now at 230 that I should be checking on my afternoon 330 run that the numbers add up and match. Why hasn't the 330 run happened yet????
Now I figure it out.
5pm won't come early enough. Or will it?
To err is human to really elephant it up you need a computer
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Didn't you know that RDP really stands for "Risky Dining Perils" 
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Relativistic Diurnal Predicament
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I dunno but... isn't it time for lunch again now?! 
modified 13-May-21 20:29pm.
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You are now, and officially, a full snack developer!
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