Edit a Previous Line on Apple Basic

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italianapple's picture
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Joined: Jan 28 2007
Posts: 94

I haven't got my A-One yet, but reading around, i saw that it's not possible to go back on a previous line to edit Sad

How can you edit then a previous line , if the apple 1 uses a shift register as frame buffer ? it reloads the values in it ?

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Joined: Dec 16 2005
Posts: 244
Not sure if the Apple I is th

Not sure if the Apple I is the same way, but with my Apple //c I can just do -

10 prin "blah blah blah blah" -enter-
20 end -enter-

oops! I misspelled print!

so, retype the line...

10 print "blah blah blah blah" -enter-

then, to make sure it changed-

list -enter-

10 print "blah blah blah blah"
20 end

Thats all there is to it! Smile

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iMac G5 17" - 160GB HD - 1GB RAM

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Joined: Oct 2 2006
Posts: 5
You can't edit previous lines

You can't edit previous lines.

Keep in mind that the Apple 1 is a very primitive computer. In those days it was new to have "glass" terminal. Until then it was very common to have paper terminals (teletypes). Editing what was printed to paper was not impossible too.

"Editing" source files in basic for instance was only possible by entering the corrected line again, effectively overwriting the old line with the same line number.

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My Apple 1 projects on http://www.sbprojects.com

italianapple's picture
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Joined: Jan 28 2007
Posts: 94
Thanks !!!! :) IA-

Thanks !!!! Smile

IA-