||How an Accident of Hardware Design Encouraged Open Source|
|Subject:||ASCII on the PDP-8|
I spent a lot of time building complex systems using various models of PDP-8, PDP-15 (18 bit!), and PDP-10 (36 bit). I don't remember ever resorting to packing ASCII characters in the fashion described. Instead, characters were almost immediately transliterated into SIXBIT code, which allowed for packing 2 characters in a 12 bit word, 3 in 18, and 6 in 36 bits. One lost control characters, lower case letters, and a few other symbols, but given the limited capability of the output devices at the time, this was hardly an issue. Most of the assemblers, compilers, and interpreters we used at the time limited themselves to using characters from the SIXBIT set.
Showing messages 1 through 1 of 1.
ASCII on the PDP-8
2007-03-05 23:14:28 Mark_Rosenthal [View]