Pistorm32 showcase thread

[tomcat666]

Originally Posted by Boing-Ball

Great stuff! So which Nightly build do I need to get this all working?
Also any news on the graphics glitches issues on Workbench? Anything being done for the Elbox Mediator setups?

This is a preview of the RC2 release, it can be gotten on the discord channels only for now, since it is still in testing phase. It will be out very shortly, since it seems to be working great.

Sorry, don't know the status for the Elbox Mediator setups, since don't think any of the developers have that.

Do come around the discord channel and mention the problems. Workbench graphics glitches were present a while ago but haven't heard of anyone having those problems for months.

[derSammler]

Originally Posted by tomcat666

This is a preview of the RC2 release, it can be gotten on the discord channels only for now, since it is still in testing phase.

The RC2 branch is also on GitHub:
https://github.com/michalsc/Emu68/tree/RC2

[eXeler0]

RBPi 5 is coming soon ;-)

[pandy71]

Preliminary RPi5 benchmarks shows 2..3 times higher performance than RPi4.
https://www.phoronix.com/review/rasp...i-5-benchmarks

[Dunny]

Originally Posted by Boing-Ball

Really? As the last update I tried (20230901) certainly did have them. Others have had them too.. have had to stick with (20230711) as that for the moment is the sweet spot with no glitches and no issues with Elbox mediator and cards..
Other have had to resort to the same version even without a Mediator and external graphics card…

Oh dude, those others need to get on the discord and get those bugs fixed. So much progress in the last couple of weeks it's inspiring.

[klx300r]

Great to see the improvement on chip speed issues and general compatibility I'm loving my PiStorm32 with 3A+

[Karlos]

The RPi 5 us due out soon. It's supposed to be about twice the performance of the Pi4, though I don't know if that's single core performance (probably not). But either way, if it works, or can be made to work with the Pistorm/Emu68...

Beast.

[Dunny]

Originally Posted by Karlos

The RPi 5 us due out soon. It's supposed to be about twice the performance of the Pi4, though I don't know if that's single core performance (probably not). But either way, if it works, or can be made to work with the Pistorm/Emu68...

Beast.

We're hoping so. Currently with the little knowledge we have, it's 50/50 whether or not it will be fast enough, ironically.

The layout will almost certainly mean that the current PiStorm boards won't fit. And then there's the heat - needs active cooling (but that's not so bad, an overclocked Pi4 also needs it). The power draw might kill the Amiga.

We're currently waiting to see what we get when they're released.

[Karlos]

Originally Posted by Dunny

We're hoping so. Currently with the little knowledge we have, it's 50/50 whether or not it will be fast enough, ironically.

The layout will almost certainly mean that the current PiStorm boards won't fit. And then there's the heat - needs active cooling (but that's not so bad, an overclocked Pi4 also needs it). The power draw might kill the Amiga.

We're currently waiting to see what we get when they're released.

Regarding the power draw, I remember these problems with the BlizzPPC/BVision. Even before moving to a tower, I'd added a second power feed into the 1200 that fed the drives directly and also the motherboard via the floppy power header on the motherboard. Never had any power issues after that

[Kin Hell]

From the FAQ here:

https://thepihut.com/products/raspberry-pi-5

Can I use a Raspberry Pi 4 power supply with the Raspberry Pi 5?
Yes, however this will limit the current available to USB ports/devices. We recommend customers use the Raspberry Pi 27W USB-C power supply.

https://thepihut.com/products/raspbe...c-power-supply

[Karlos]

The PiStorm with Pi4 is already pushing the 68K envelope hard. It would be interesting to see what a Pi5 manages with things like the lightwave test people were chucking around before.

[Kin Hell]

Originally Posted by Karlos

The PiStorm with Pi4 is already pushing the 68K envelope hard. It would be interesting to see what a Pi5 manages with things like the lightwave test people were chucking around before.

Indeed....

A CM4 clocked to 2.3Ghz under CaffieneOS runs AIBB Beachball in 0.05 seconds with 040 settings.

[tomcat666]

Originally Posted by Kin Hell

Indeed....

A CM4 clocked to 2.3Ghz under CaffieneOS runs AIBB Beachball in 0.05 seconds with 040 settings.

What overclock settings (voltage specifically) do you need to use to get 2.3 Ghz out ? I don't want to kill it with extreme overvoltage. I am at 7 now for 2.2 Ghz.

[Kin Hell]

Disclaimer......

Following anything written below is entirely done at the users own risk.

Also please note, this example is using a CM4 Module on a Michal Schulz carrier board with rear break out board fitted & utilising an RTC module.
This board hangs under the PiStorm32 Lite board & for this fact, favours larger Heatsink fan possibilities in an Amiga A1200 Desktop.

Here's my Purple 32Lite!

The voltage tweaks will still work with conventional Pi3A+ & Pi4B boards. You will require active cooling to keep temperatures down. Highest I've seen is 36DegC after several hours of use with a component safe use threshold of 85DegC before self throttling.

Originally Posted by tomcat666

What overclock settings (voltage specifically) do you need to use to get 2.3 Ghz out ? I don't want to kill it with extreme overvoltage. I am at 7 now for 2.2 Ghz.

These are the default numbers from CaffieneOS 9.22 CONFIG.txt

#-Overclock-#
##Enable the options below to increase speed of RPi4 ARM cpu to 2.3GHz
#arm_freq=2200
#over_voltage=9
#force_turbo=1

I just removed the relevant Hash-TAG's, dialed in 2300 & benched it's ass!

2400 was unstable & only booted to desktop & anything over 9 on the over_voltage wouldn't let it get to desktop again.

I do have a heatsink & fan fitted though which I acquired from here:

https://www.amazon.co.uk/GeeekPi-Alu...st_sto_dp&th=1

Check out the Pi Store on Amazon....

https://www.amazon.co.uk/stores/Geee...8?ref_=ast_bln

Don't also forget, no two pieces of Silicon are identiacal & mileages will vary. - The higher you go on an overclock, the steeper the curve becomes.
If you can do 2.2Ghz on "over_voltage=7", you may get better than my Pi having to bang 9.

Over @ Tom's Hardware, they've pushed the Pi4 to 2.8Ghz with a Peltier. - <---- Strictly not for the faint hearted or noob over-clocker. https://www.tomshardware.com/news/ra...00-accelerator

Also over @ the same gaff, they've pushed the Pi5 to 3Ghz core & 1.1Ghz on the Video core.

[tomcat666]

Yes, with overvoltage it works, thanx, but temperature goes UP 2.2 Ghz at 40 deg.celc. is good enough for me

[Kin Hell]

Originally Posted by tomcat666

Yes, with overvoltage it works, thanx, but temperature goes UP 2.2 Ghz at 40 deg.celc. is good enough for me

Isn't it just & really....

With a CM4 Module @ 2.3Ghz & running almost 2000 times fater than a Stock A1200, do you really need more?

[VladR]

Originally Posted by Karlos

The RPi 5 us due out soon. It's supposed to be about twice the performance of the Pi4, though I don't know if that's single core performance (probably not).

Yeah, unfortunately, those estimates are for all 4 cores (e.g. it's added up).

Single-core A76 is estimated to be merely 25% faster (and that's still counting apples with tractors as it's combined Integer+Floating-Point performance).



Do we know if Emu68k is using multithreading (e.g. running on all 4 cores)? I can imagine it's quite non-trivial to implement proper multithreading across all 4 cores without heavy synchronization (e.g. burning through performance) after each batch of instructions on each core.

But, perhaps ARM's HW pipelining is more predictable? I only coded RISC assembly for Jaguar , so don't know

[MartinW]

It uses multiple cores, but not in a traditional multithreaded sense. It's basically single core with an additional core for housekeeping duties and optionally a 3rd core for debugging.

[EDIT] Never mind my RPi5 incompatibility comment, it's already been covered.

[VladR]

Originally Posted by MartinW

It uses multiple cores, but not in a traditional multithreaded sense. It's basically single core with an additional core for housekeeping duties and optionally a 3rd core for debugging.

Thank you! That means, that eventually, once all major bugs get fixed, there's a chance for a significant RTG speed-up.

I wish I had more time these days. I genuinely love multithreaded coding and this would be right up my alley...

[alcomatt]

This are all great news and the future for pistorm looks bright!