"I had written C++ code to emulate the machine described in Turing’s 1936 paper, and could use it to decide, say, if a word was a palindrome. But.... I decided I would build a physical Turing machine that could execute code written for a real processor."

"I dubbed my machine PureTuring....A single instruction can take up to 3 million PureTuring clock cycles to fetch, versus one to six cycles for the actual 6502!"