Re:Altair 8800 – Loading 4K BASIC with a Teletype [video]
by kps on Monday May 26, 2014 @07:25PM
(#7802124)
Paper tape is why ASCII DEL is 0x7F — it's the only idempotent punch.
And why typing DEL is properly a forward delete operation: it eliminates the character under the cursor — converting it to a DEL, to be ignored when reading the tape — and (like any other punch) advances to the next. (I blame the VT220 for mucking this up and leading to endless confusion.)
And why typing DEL is properly a forward delete operation: it eliminates the character under the cursor — converting it to a DEL, to be ignored when reading the tape — and (like any other punch) advances to the next. (I blame the VT220 for mucking this up and leading to endless confusion.)