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matherp
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Joined: 11/12/2012
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Posted: 05:14pm 13 Aug 2024

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RP2350 on the left

CMM2 Grainmbench 18131
Benchmarks 0.001588,0.01054,0.01778,0.01563,0.01749,0.030488,0.05367,0.02464

CMM2 : 7.227 seconds
Edited 2024-08-14 03:29 by matherp

Mixtel90

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Joined: 05/10/2019
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Posted: 05:34pm 13 Aug 2024

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Very nice, Peter. Ok, so not up to CMM2 speeds but we didn't expect it to be - and it's a little bit cheaper. :)

Impressive little board too.

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4223

Posted: 05:37pm 13 Aug 2024

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So the 2350 is 1.7x faster than the 2040.
And you succesfully overclocked it at 378Mhz.

Those are both positive signs. Nice work Peter!

PicomiteVGA PETSCII ROBOTS

Bleep
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Joined: 09/01/2022
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Posted: 07:11pm 13 Aug 2024

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:-)
I'm sort of surprised that the Solar eclipse calculations aren't a lot faster, as I assume there would be a lot of floating point maths, maybe not.
But looking great already.
Edited 2024-08-14 05:24 by Bleep

PhenixRising
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Joined: 07/11/2023
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Posts: 857

Posted: 07:31pm 13 Aug 2024

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Man, BM 5,6,7,8

robert.rozee
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Joined: 31/12/2012
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Posted: 10:37pm 13 Aug 2024

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matherp said RP2350 on the left

well done Peter

how difficult and/or easy was it to get the code working with the RP2350? was it as simple as just recompiling for the new processor, or was more under-the-hood tinkering required?

cheers,
rob :-)

Bernie3D
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Joined: 02/08/2023
Location: United States
Posts: 19

Posted: 04:05am 14 Aug 2024

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Very nice Peter. Thanks!
I'm sure you couldn't resist getting into this new chip.
As they say, it's the journey, not the destination.

All the best,
Bernie

PhenixRising
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Joined: 07/11/2023
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Posts: 857

Posted: 07:27am 14 Aug 2024

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The difference between BM4 and BM5 is that BM5 has a GOSUB

The RP2040 takes an extra 69µsec for this, whereas the RP2350 takes only <3.5µsec

Actual MMBasic code gets more than a 1.7 X boost in performance

Exciting stuff

PhenixRising
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Posts: 857

Posted: 07:33am 14 Aug 2024

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Quote
BM1 BM2 BM3 BM4 BM5 BM6 BM7 BM8
ABC 800 single precision 0.9 1.8 6.0 5.9 6.3 11.6 19.6 2.9
ABC 800 double precision 1.2 2.2 10.0 10.6 11.0 17.8 26.4 14.4
IBM PC 1.5 5.2 12.1 12.6 13.6 23.5 37.4 3.5
Apple III 1.7 7.2 13.5 14.5 16.0 27.0 42.5 7.5
VIC-20 1.4 8.3 15.5 17.1 18.3 27.2 42.7 9.9
ZX81 in "fast mode" 4.5 6.9 16.4 15.8 18.6 49.7 68.5 22.9

Maximite 0.016 0.144 0.196 0.205 0.354 0.512 0.721 0.31

Don't suppose anyone was able to run this under QuickBasic on a 486DX @25MHz or whatever?

Quote
Print "Maximite Benchmark tests"
Print " "

Print "Benchmark 1"
Timer = 0
For j = 1 To 1000
Next j
Print Timer / 1000
Print " "

Print "Benchmark 2"
Timer = 0
j =j0
BM2:
j = j+1
If j < 1000 GoTo BM2
Print Timer / 1000
Print " "

Print "Benchmark 3"
Timer = 0
j = 0
BM3:
j = j+1
a = j/j*j+j-j
If j < 1000 GoTo BM3
Print Timer / 1000
Print " "

Print "Benchmark 4"
Timer = 0
j = 0
BM4:
j = j+1
a = j/2*3+4-5
If j < 1000 GoTo BM4
Print Timer / 1000
Print " "

Print "Benchmark 5"
Timer = 0
j = 0
BM5:
j = j+1
m = j/2*3+4-5
Gosub 4000
If j < 1000 GoTo BM5
Print Timer / 1000
Print " "

Print "Benchmark 6"
Timer = 0
j = 0
dim ray(5)
BM6:
j = j+1
m = j/2*3+4-5
Gosub 4000
For q = 1 TO 5
Next q
If j < 1000 GoTo BM6
Print Timer / 1000
Print " "

Print "Benchmark 7"
Timer = 0
j = 0
dim ray2(5)
BM7:
j = j+1
m = j/2*3+4-5
Gosub 4000
For q = 1 TO 5
ray2(q) = m
Next q
If j < 1000 GoTo BM7
Print Timer / 1000
Print " "

Print "Benchmark 8"
Timer = 0
j = 0
BM8:
j = j+1
m = j^2
blog = LOG(j)
csin = SIN(j)
If j < 1000 GoTo BM8
Print Timer / 1000

End

4000 RETURN

karlelch

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Joined: 30/10/2014
Location: Germany
Posts: 172

Posted: 08:34am 14 Aug 2024

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Phantastic! Thank you @Peter

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9110

Posted: 09:10am 14 Aug 2024

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The big change was upgrading the sdk to V2.0.0
The RP2040 code then compiled pretty much as-is, just a few #ifdef clauses to account for minor changes and a bug in the sdk which took a couple of hours to track down.
My intention is to make little of no functional changes other than to support both the 60 and 80 pin chips.
Here is my 80-pin development environment

The biggest bit of work will be to try to port the VGA version to HDMI using the new HSTX peripheral. I don't currently intend to change colours as that would lead to program incompatibility with the RP2040.

Waiting on these to arrive from JLC

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 857

Posted: 09:38am 14 Aug 2024

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Can we still overclock to 420 for those who don't need VGA?

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 6781

Posted: 09:47am 14 Aug 2024

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Sorry, it won't go slower than 48,000,000. 420Hz is a bit too slow.

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 857

Posted: 10:40am 14 Aug 2024

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Mixtel90 said Sorry, it won't go slower than 48,000,000. 420Hz is a bit too slow.

Followed by the drums

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4223

Posted: 11:04am 14 Aug 2024

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PhenixRising said Can we still overclock to 420 for those who don't need VGA?

The M33 is harvard architecture. You may not need this high clock. And remember: everything above 150 is at your own risk.

Volhout

PicomiteVGA PETSCII ROBOTS

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 857

Posted: 02:27pm 14 Aug 2024

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Oh I don't need it...Just curious re: possibilities.

150MHz is only a "lawyer" number. Similar to buying a firearm with the standard "lawyer trigger".

Mixtel90

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Location: United Kingdom
Posts: 6781

Posted: 07:32am 15 Aug 2024

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What an interesting range this is! For those who haven't dug into it yet:

There is only one new die, no matter which of the four RP2350x or RP2354x series chips you get. It's the same die in both the 60-pin "A" and 80-pin "B" packages. The RP2354x versions have a standard flash die alongside the RP2350 die and wire bonded to it internally.

The smaller package doesn't follow the same numeric GPIO sequence as the 48 GPIO set on the die because of the bonding arrangement, but there is on-chip translation so that it looks identical. Unfortunately (apparently due to a silicon errata) this translation doesn't work if the 60-pin chip is used in secure mode so the 60-pin program then has to use the 80-pin GPIO numbers. Oh, such fun and jollity!

The flash can have partitions. You can load different uf2 files into different partitions and then decide which one to boot from, very much like a HDD. Useful if you use a 16MB flash chip then connect a second using QSPI. :)
Edited 2024-08-15 17:40 by Mixtel90

Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 857

Posted: 08:11am 15 Aug 2024

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@Mixtel90

Hey Mick,

Once again, a new MCU where they never state the max BAUD of the UARTS. Have you seen anything?

zeitfest
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Joined: 31/07/2019
Location: Australia
Posts: 482

Posted: 08:45am 15 Aug 2024

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The blurb says the 12 bit ADC non-linearity spikes are fixed. But ENOB (effective number of bits) is not great, more like 9 than 12 ie AFAIK noisy

Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9306

Posted: 09:54am 15 Aug 2024

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matherp said

RP2350 on the left

CMM2 Grainmbench 18131
Benchmarks 0.001588,0.01054,0.01778,0.01563,0.01749,0.030488,0.05367,0.02464

CMM2 : 7.227 seconds

Sigh....

Was it something I said? (rhetorical)

THIS....I did NOT expect.

Hey Peter!
Stop making me a liar!

Smoke makes things work. When the smoke gets out, it stops!

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