Apple I Keyboard Noob question

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Apple I Keyboard Noob question

Hello everyone:

I recently bought a pre-owned Replica 1 and was able to use it yesterday for the first time.  For the keyboard I am using a cheap modern keyboard with a USB wire.  It hooks up to the board using a USB female to PS/2 keyboard adaptor I obtained from ReActive Micro.  Keyboard works fine - all characters come up okay, the problem is there seems to be no working delete or back space function.  

 

Does such a typing feature simply not exist for an Apple I due to technical limitations? Or is there a key combination I'm missing, or is this a possible compatibility problem with using a modern USB keyboard?  I tested the keyboard with a laptop and ruled out any faults with the keyboard itself (delete and back space with a laptop works okay). If it is a compatibility issue, would a ps/2 keyboard be less inclined to have such issues?   Any info would be appreciated.  I've looked at the materials provided by Briel concerning the replica 1 and related Youtube clips, but can find no reference to such an issue or quirk. Thanks in advance for any help!

 

 

 

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There is no backspace or

There is no backspace or delete on the Apple-1 due to how the video memory is built out of Shift Registers (this was common for many terminals/TV Typewriters at the time). You can "rub-out" characters by using an underscore character.  Note: when you send a "del" ASCII 127, you may see an underscore character but it's not an underscore.

 

Rub-Out works like this...

 

10 PRINT  "HELK_LO"

 

actualluy means...

 

10 PRINT "HELLO"

 

 

 

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Thanks a lot for the response

Thanks a lot for the response and the useful info on "rub-out".  

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