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chris
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Joined: 24/08/2020
Location: United Kingdom
Posts: 56

Posted: 08:47pm 14 Oct 2020

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Somebody recently pointed me in the direction of this benchmark:

http://oldcomputer.info/8bit/benchmarks/index.htm

I'm away from computer so haven't had time to try it out, but I wonder how CMM1 and CMM2 would do?

CircuitGizmos

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Joined: 08/09/2011
Location: United States
Posts: 1427

Posted: 08:59pm 14 Oct 2020

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Quote S=0

TIMER=0

FOR N=1 TO 100
�A=N
�FOR I=1 TO 10
� �A=SQR(A)
�NEXT I
�FOR I=1 TO 10
� �A=A*A
�NEXT I
�S=S+A
NEXT N
PRINT ABS(1010-S/5)

PRINT TIMER

CMM2: 0.014 seconds.
Edited 2020-10-15 06:59 by CircuitGizmos

Micromites and Maximites! - Beginning Maximite

vegipete

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Joined: 29/01/2013
Location: Canada
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Posted: 09:09pm 14 Oct 2020

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For the first example, I get 15.9 seconds .... for 1000 iterations. Drastically faster than anything in the table. The print statement from line 120 doesn't slow it much - 15.7 seconds with no print. Allowing the print to scroll does slow it a little bit. (400 MHz Waveshare.)

time: 15908.843

> list
t = timer

for many = 1 to 1000
10 S=0
20 FOR N=1 TO 100
30 A=N
40 FOR I=1 TO 10
50 A=SQR(A)
60 NEXT I
70 FOR I=1 TO 10
80 A=A*A
90 NEXT I
100 S=S+A
110 NEXT N
120 PRINT @(100,200) ABS(1010-S/5)
next many
? "time:" timer - t

130 END

Edited 2020-10-15 07:10 by vegipete

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SimpleSafeName

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Joined: 28/07/2019
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Posted: 03:15am 15 Oct 2020

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Okay, let's see...

I have TI99/4As,
a ZX Spectrum +2, a +3, and a Harlequin ZX,
Commodore 64s, 128s, and VIC20s,
Mattel Aquariuses (happy to see this oft-maligned computer do so well),
an Acorn Electron and a BBC Micro B.

But where are the MSX computers? I may have to bust out my MSX TurboR and see what it will do. :)

Tinine
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Joined: 30/03/2016
Location: United Kingdom
Posts: 1646

Posted: 06:39am 15 Oct 2020

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118ms on my E-100 @100MHz

So in this case, the 400MHz CMM2 is ~7.5X the speed of the PIC32MX470

PeteCotton

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Joined: 13/08/2020
Location: Canada
Posts: 653

Posted: 06:05pm 15 Oct 2020

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Just for giggles, I thought I would run it in C# (on a Ryzen 7 2700 desktop).

The print/scrolling command really slows it down. 650 milliseconds for 1,000 iterations as opposed to 16 milliseconds when updating a label without scrolling.

Note: This is just for curiosity. Of course it's an unfair comparison to throw a modern computer against 40 year old tech... and I know C# vs Basic isn't fair either... and I'm only using one of the 16 threads... but all in all 375,000 times faster than a BBC Micro. It boggles the mind how far we have come.

vegipete

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Posted: 07:21pm 15 Oct 2020

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Speed, or lack thereof. 4 minutes and 10 seconds.
Perhaps of greater concern is the completely different answer than the CMM2.

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twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1769

Posted: 08:35pm 15 Oct 2020

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My first "laptop" (Tandy 100)! I loved it!

Michael

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

Volhout

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Joined: 05/03/2018
Location: Netherlands
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Posted: 05:16pm 16 Oct 2020

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Epson PX8

Don't have it anymore.. awfully slow with it's Z80 running at 780kHz...(CMOS).

PicomiteVGA PETSCII ROBOTS

mclout999

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Joined: 05/07/2020
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Posted: 06:30pm 16 Oct 2020

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twofingers said

My first "laptop" (Tandy 100)! �I loved it!

Michael

I still have mine!! It's keyboard has a cold solder joint somewhere. I have to take the time to fix it but it works great except for the column of keys that do not work.

They call me Shai-Hulud (The maker)

SimpleSafeName

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Posted: 08:33pm 16 Oct 2020

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mclout999 said

twofingers said

My first "laptop" (Tandy 100)! �I loved it!

Michael

I still have mine!! �It's keyboard has a cold solder joint somewhere. I have to take the time to fix it but it works great except for the column of keys that do not work.

I think that it was either Jan Beta, Adrian's Digital Basement, or Retro Recipes that had a Tandy with the exact same problem. It might have been a TRS 80 though. But "SepTandy" is the month where many of the retro guys dig up their Tandys and spruce them up.

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