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