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Bob339
Newbie

Joined: 28/02/2021
Location: United States
Posts: 4

Posted: 06:18pm 03 Sep 2022

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I have been trying to save some variables to the Micromite flash memory, but cannot get it to work.

I am using the following two programs.

[code}
A$ = "Hello World"
VAR Save A$
{/code}

I save the above code, power off the Micromite, turrn it back on and run the following code:

[code]
VAR RESTORE
PRINT A$
[/code]

The second program outputs nothing. Can someone tell me why this doesn't work.

circuit
Senior Member

Joined: 10/01/2016
Location: United Kingdom
Posts: 293

Posted: 07:06pm 03 Sep 2022

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Should work okay; it works for me. Just to make sure that I had not missed something I just quickly typed it in, powered down, powered up and there it was.

Please tell us which Micromite you are using and which MMBasic version?

circuit
Senior Member

Joined: 10/01/2016
Location: United Kingdom
Posts: 293

Posted: 07:09pm 03 Sep 2022

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Just a further thought; when you said "I save the above code..." I presume that you did RUN the code after saving it before you powered down?

p.s. As this is your first post (I have just noticed) a warm welcome to the forum. This is one of the most helpful and polite places to get help on your projects. I have gained enormously from consulting the many knowledgeable contributors around the globe.
Edited 2022-09-04 05:32 by circuit

Bob339
Newbie

Joined: 28/02/2021
Location: United States
Posts: 4

Posted: 09:31pm 03 Sep 2022

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Hello circuit

Sorry for the delay getting back. Had some problems logging back in.

I am using the Micromite MX170F2568 chip and MMBasic version 5.05.03.

Yes, I did RUN the code after saving it, but just to be sure I ran and saved it again, but still no response.

I also tried using a different MX170 chip, but still no resonse.

matherp
Guru

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

Posted: 09:35pm 03 Sep 2022

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Can't remember exactly but I think loading a new program erases the saved variables. The intention is that a single program can save data for the next time it is run without re-loading.

Try your commands at the command line to start with.

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2832

Posted: 09:58pm 03 Sep 2022

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Hi Bob,
At the console:-

> ? mm.ver
5.0505
> ? mm.device$
Micromite MkII
> a$="Hello World"
> ? a$
Hello World
> var save a$

Power off, wait 30s power on.

> Micromite MKII MMBasic Ver 5.05.05
Copyright 2011-2021 Geoff Graham

> var restore
> ?a$
Hello World
> a$ = "Deleted"
> ? a$
Deleted
> var restore
> ? a$
Hello World
>

NEW deletes everything belonging to the previous program including VARs.

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3308

Posted: 10:07pm 03 Sep 2022

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Saved variables are indeed cleared by the NEW command or when a new program is loaded via AUTOSAVE, XMODEM, etc. �This is because the VAR SAVE command is intended for saving data that will be used later by the same program.

Try running this program twice:

VAR RESTORE
PRINT A$
A$ = "Hello World"
VAR Save A$

The first time that you run it, nothing will be printed on the console. �The second time that you run it you should see "Hello World".

Geoff
Edited 2022-09-04 08:09 by Geoffg

Geoff Graham - http://geoffg.net

Bob339
Newbie

Joined: 28/02/2021
Location: United States
Posts: 4

Posted: 01:26am 04 Sep 2022

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Hello Geoff,

I tried your suggestion of running the program twice, but get no resonse

I tried matherp's suggestion and got error cant find A

I tried phil99's suggestion and got error flash write

I am using MMEdit. Should that make any difference.

Bob339
Newbie

Joined: 28/02/2021
Location: United States
Posts: 4

Posted: 01:47am 04 Sep 2022

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Sorry Guys

I had not used the Micromite for a while and forgot some things.

I tried Geoff's suggestion again and hit the run button. It Worked.

The problem was that I was not hitting the run button.

Thanks much, I might have given up without your help.

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9757

Posted: 05:02am 04 Sep 2022

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Glad you got it sorted, and welcome to the forums.

Please do continue to post any questions.
This forum is very welcoming to newbies, and once you get into MMBASIC, I think you will like it quite a lot.

Pardon my presumptuousness.

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

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