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javavi

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Joined: 01/10/2023
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Posted: 04:12pm 16 Jul 2025

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@matherp,
There seems to be a problem with the EDIT FILE fname$ command, opening files for editing from the program somehow corrupts the contents of variables in RAM.
A problem was detected when trying to open files for editing from FM on PicoMite VGA/HDMI firmware versions 6.00.02 and 6.00.03, although on version 6.00.01 it worked fine.
Edited 2025-07-17 02:14 by javavi

matherp
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Posts: 10323

Posted: 05:10pm 16 Jul 2025

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Did you download the very latest from Geoff? If this doesn't fix it then this will have to wait for the next release.

javavi

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Posted: 06:05pm 16 Jul 2025

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matherp said Did you download the very latest from Geoff? If this doesn't fix it then this will have to wait for the next release.

I downloaded it again from Geoff, reflashed Pico with PicoMiteVGA 6.00.03 firmware and Yes, I confirm the problem!
Edited 2025-07-17 04:05 by javavi

matherp
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Posted: 06:10pm 16 Jul 2025

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Can you post a small test program to demonstrate the issue please

javavi

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Posted: 06:31pm 16 Jul 2025

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matherp said Can you post a small test program to demonstrate the issue please

FM170.zip
FM02078.zip
Try to open the file for editing (F4) and exit (possibly several times) and you will see the error of data failure in variables yourself.

With respect for your attention, Javavi

matherp
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Posted: 06:52pm 16 Jul 2025

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Sorry, that doesn't count as a "small test program ".

javavi

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Posted: 07:11pm 16 Jul 2025

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matherp said Sorry, that doesn't count as a "small test program ".

Dim a1(1000),a2(1000)

For i=0 To 1000
a1(i)=Rnd
a2(i)=a1(i)
Next

Compairing_Arreys
Edit File "Comp.bas"
Compairing_Arreys
End

Sub Compairing_Arreys
Local res=0
For i=0 To 1000
If a1(i)<>a2(i) Then Inc res
Next
Print "Missmatches:",res
End Sub

Save this program with the name Comp.bas and run it.
After opening and closing the EDITOR, the program gives me 9 mismatches.

homa

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Joined: 05/11/2021
Location: Germany
Posts: 471

Posted: 07:45pm 16 Jul 2025

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So far I can confirm that.
@javavi: Do you use so many variables?

For i=0 To 991 'From 992 onwards, it no longer works first mistake!
a1(i)=Rnd
a2(i)=a1(i)
'Print i,a1(i),a2(i)
Next

Compairing_Arreys
Edit File "comp.bas"
Compairing_Arreys
End

Sub Compairing_Arreys
Local res=0
For i=0 To 991
If a1(i)<>a2(i) Then
Inc res
Print a1(i),a2(i)
End If
Next
Print "Missmatches:",res
End Sub

> option list
PicoMiteHDMI MMBasic USB RP2350A Edition V6.00.03
OPTION SERIAL CONSOLE COM2,GP8,GP9
OPTION SYSTEM I2C GP20,GP21
OPTION FLASH SIZE 4194304
OPTION COLOURCODE ON
OPTION KEYBOARD GR
OPTION RESOLUTION 640x480 @ 315000KHz
OPTION SDCARD GP22, GP26, GP27, GP28
OPTION AUDIO GP10,GP11', ON PWM CHANNEL 5
OPTION RTC AUTO ENABLE
OPTION MODBUFF ENABLE 192
OPTION PLATFORM HDMIUSB
>

javavi

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Location: Ukraine
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Posted: 08:01pm 16 Jul 2025

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homa said @javavi: Do you use so many variables?

Yes! There is no such thing as too much memory, and I always lack it. ))

dddns
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Joined: 20/09/2024
Location: Germany
Posts: 544

Posted: 06:16am 17 Jul 2025

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javavi said
Save this program with the name Comp.bas and run it.
After opening and closing the EDITOR, the program gives me 9 mismatches.

With enabled PSRAM it works for me and there is no delay while editor opens.

Both, your test program as well as your latest FM
Edited 2025-07-17 16:28 by dddns

toml_12953
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Location: United States
Posts: 447

Posted: 09:20am 17 Jul 2025

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javavi said

Dim a1(50),a2(50)

For i=0 To 50
a1(i)=Rnd
a2(i)=a1(i)
Next

Comparing_Arrays
Edit File "Comp.bas"
Comparing_Arrays
End

Sub Comparing_Arrays
Local res=0
For i=0 To 50
If a1(i)<>a2(i) Then Inc res
Next
Print "Mismatches:",res
End Sub

Save this program with the name Comp.bas and run it.
After opening and closing the EDITOR, the program gives me 9 mismatches.

When I change the dimensions to 50, I get 19 mismatches!

matherp
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Location: United Kingdom
Posts: 10323

Posted: 10:23am 17 Jul 2025

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Try the relevant version out of the attached.

PicoMiteV6.00.03.zip

javavi

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Location: Ukraine
Posts: 508

Posted: 10:52am 17 Jul 2025

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matherp said Try the relevant version out of the attached.

Checked on PicoMite RP2040 VGA V6.00.03
How strange! A simple test passes, but the array c(15) in FM still gets corrupted.

[92] Color c(7),c(0)
Error : 5424127535405417485 is invalid (valid is 0 to 268435455)
>

Edited 2025-07-17 20:56 by javavi

matherp
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Posted: 10:56am 17 Jul 2025

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Can you provide another test file that shows the issue?

javavi

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Posts: 508

Posted: 11:09am 17 Jul 2025

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matherp said Can you provide another test file that shows the issue?

How long are we going to play this game?
I'm a user, not a tester!

Edited 2025-07-17 21:25 by javavi

javavi

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Posted: 11:28am 17 Jul 2025

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matherp said Can you provide another test file that shows the issue?

Why isn't the FM program a test?
FM170.zip
The failure in the c() array only occurs after opening the file for editing (F4).
This does not happen on PicoMite firmware version 6.00.01

matherp
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Posts: 10323

Posted: 11:31am 17 Jul 2025

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If users won't put the effort in how am I supposed to fix problems that arise? It is completely impossible to take a massive program which has a reported issue and tell whether it is a problem in the program or a bug in the firmware.
Remember, I do this for fun without any recompense. If the wider community doesn't engage in testing and debugging then there won't be any progress.

thwill

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Posted: 11:31am 17 Jul 2025

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javavi said I'm a user, not a tester!

And Peter is not a paid software engineer working for a professional software vendor to sell you a paid version of MMBasic, he is an accomplished hobbyist.

Best wishes,

Tom

MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures

Mixtel90

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Posts: 7942

Posted: 11:41am 17 Jul 2025

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^^^^^ This ^^^^^

You can't spend time debugging someone else's code, that you are unfamiliar with, when you are trying to fix a problem in the interpreter itself. You can see that there's a problem, yes, but the source of the problem in a big piece of code can be anywhere. You need a short, simple program that shows the problem reliably every time you run it. The simpler the test routine the better.

Remember that the most difficult part of the job is in identifying precisely what is causing the problem. Once you know that the fix becomes so much easier! :)

Mick

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

Gadgetguy
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Joined: 26/04/2025
Location: France
Posts: 104

Posted: 11:52am 17 Jul 2025

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Hello all, I have a "newbie" moment - sorry for that. I have just updated my Picomite with the most recent USB HDMI 2350 firmware (file name PicoMiteHDMIUSBV6.00.03.uf2)

After doing so my HDMI out does not work any more (tried two different monitors) - while it worked before the update.

I am able to log into the box via serial and it seems fine (as far as I can see).

What am I doing wrong here please?

Thank you for any pointers.

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