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Forum Index : Microcontroller and PC projects : MMBasic V4.5 editor problem with .DAT files
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| slhd Newbie  Joined: 10/10/2023 Location: GermanyPosts: 2 |
Hello, my name is Stephan from Germany - I am using MMBasic V4.5 on an UBW32. I have a problem with editing stored data as .DAT files through the screen editor. I am generating a .DAT file with open for output and print command. For a graphic program I need to store several lines of two numerical numbers (eg 345, 178). Reading the .DAT file works without any problem, so far I do not open the file with the screen editor. Example : - generate a .DAT file with 25 lines of same data (eg 100, 120). - file size seems correct - open with editor only 1 line with 100,120 is visible instead of 25 - open and read the data still works - but when you save after using the editor all other 24 lines are away - file size is of course very small It seems the editor ist erasing all lines which begin with the same number. Guess it "think" that these are line numbers, so it over write double numbers. Checking the .DAT file with a PC shows all lines so long I did not save it after opened with the editor. To avoid this I put a string as first data (eg D, 345, 178), so all lines are visible there. But I don`t want to waste memory. Well, is this a problem with my UBW32 or do you have the same with a Maximite Color? Cheers, Stephan ps: please excuse my english if it sounds a bit strange |
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| JohnS Guru  Joined: 18/11/2011 Location: United KingdomPosts: 3802 |
The editor is for use with Basic programs only. So, yes, it will be confused by what look like line numbers. John |
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| slhd Newbie Joined: 10/10/2023 Location: GermanyPosts: 2 |
Thanks, so I may add a upcounting line number as part of the data instead of a string. Or is there any other way to void this problem. Stephan |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6798 |
To be honest, I'd simply edit the DAT file in an external editor - or write a simple editor in MMBasic. You know the file format and you probably know how many values there are so you could just read them into an array, edit it and re-write the array. Welcome to the forum, by the way. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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