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rea23
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Joined: 16/09/2022
Location: Switzerland
Posts: 26

Posted: 03:57pm 04 Nov 2022

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Hi,
I try to use the two commands VAR SAVE and VAR RESTORE without success. First I enter VAR CLEAR from the console. Then I run the program. After that I make the marked lines as comment and start the program a second time. However, the array rline() is not present. What am I doing wrong?

'''''''''''''''''''''''''''''''''''''
' Test: VAR SAVE vars, VAR RESTORE
'
' 4.11.2022: VAR RETORE ????
' '''''''''''''''''''''''''''''''''''
'
option base 1
dim string rline(5) length 12
dim i as integer
var restore '??
' 'should not be necessary:
if left$(rline(1),1) = "" then 'comment out for second run
for i=1 to 5 'comment out for second run
rline(i) = str$(i) + ". Name " + str$(i) 'comment out for second run
print rline(i) 'comment out for second run
next i 'comment out for second run
var save rline() 'comment out for second run
end if 'comment out for second run
'
print
print "rline() restored:"
print rline(1) '??
print
'
end

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4147

Posted: 04:16pm 04 Nov 2022

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Would be good to say what hardware (CPU) & what MMBasic version :)

John

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 8304

Posted: 05:22pm 04 Nov 2022

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Have you tried doing the second run without dimensioning rline()?

Mick

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

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10628

Posted: 05:32pm 04 Nov 2022

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Tried your program on PicoMite V5.07.05RC8 and it works perfectly

Quote Have you tried doing the second run without dimensioning rline()?

That will give an error. Arrays must be dimensioned to use restore
Edited 2022-11-05 03:32 by matherp

Bowden_P
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Joined: 20/03/2019
Location: United Kingdom
Posts: 162

Posted: 08:45pm 04 Nov 2022

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To demonstrate the non-volatility of a VAR SAVE/RESTORE sequence, you need to power-down/power-up between your first and second runs. However, do NOT reload your program, else you will erase your SAVE'd variables! Just do the commenting edits, then run it.
With best regards, Paul.

p.s. This only applies when using the internal editor.
If you are editing using MMEdit, a download occurs for your edits to run, which will erase the previously SAVE'd vars.
Edited 2022-11-05 06:51 by Bowden_P

Nothing so constant as change.

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

Posted: 09:37pm 04 Nov 2022

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Bowden_P said
p.s. This only applies when using the internal editor.
If you are editing using MMEdit, a download occurs for your edits to run, which will erase the previously SAVE'd vars.

It's been awhile so please correct me if I'm wrong but I seem to remember that; select/copy the code in MMEdit, go to the prompt in MMC, type Autosave(is that right?), Enter.
Then paste the code at the prompt and terminate with CTRL-Z

I believe that this only replaces the code....but I could be wrong

Craig

rea23
Newbie

Joined: 16/09/2022
Location: Switzerland
Posts: 26

Posted: 10:31am 05 Nov 2022

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Thank you all!
Sorry about missing infos. My trials run on a Pi Pico. Firmware of MMBASIC ist V5.07.04 and I'm using MMEDIT 5 together with MMCC. I will flash the newest firmware V5.07.05RC9 and look what happens.

rea23
Newbie

Joined: 16/09/2022
Location: Switzerland
Posts: 26

Posted: 02:10pm 05 Nov 2022

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Just tested the program with firmware V5.07.05RC9 and on two different Pi Pico's. Found the same behavior as with V5.07.04. At the moment I have no idea how to use VAR SAVE/RESTORE.

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10628

Posted: 02:57pm 05 Nov 2022

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The issue is that you are updating the program with MMEDIT. This uses AUTOSAVE to download the program. This erases all cleared variables as does any mechanism of loading a new program. Don't edit your program to comment out the lines. Just run it twice in a row and it will work as you want

rea23
Newbie

Joined: 16/09/2022
Location: Switzerland
Posts: 26

Posted: 10:47am 06 Nov 2022

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I have simplified the program. When I run it twice, the values from the first run are gone. I did not edit the program between the two runs. What happened?

'''''''''''''''''''''''''''''''''''''
' Test: VAR SAVE vars, VAR RESTORE
' start the program two times
'
' 6.11.2022: VAR RETORE ????
' '''''''''''''''''''''''''''''''''''

print "Version:" , print mm.ver
print
'randomize 'gives an error?
dim a,b,c as integer

var restore 'restoring values from the first run
print "First run: "; a;" ";b;" ";c 'where are these values? !not zero!

a=int(100*rnd)
b=int(100*rnd)
c=int(100*rnd)
var save a,b,c 'please, save the values
print
print "Second run "; a;" ";b;" ";c

end

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10628

Posted: 11:02am 06 Nov 2022

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Don't know what you are doing wrong. Are you reloading the program between runs with MMEdit. Tested as below using Teraterm

rea23
Newbie

Joined: 16/09/2022
Location: Switzerland
Posts: 26

Posted: 01:32pm 06 Nov 2022

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It is a shame. You are absolutely right. It's obviously a bad habit of mine to press the rightmost icon in MMEdit, because it means exactly what it is, "load file and run it". Once again, it's a shame. Sorry for the time you spent.

Nevertheless, with the picture, you saved the situation for me. Thank you very much.

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