My original comment was rather tongue in cheek - but I have actually ported this compiler (well a later version of it, from the v6 release) to a 32-bit target - it was a different time, and C was a different, definitely more forgiving and simpler language - with other systems languages like BCPL/Bliss/etc around at the time the whole 'int is the same as a pointer' was definitely a way of thinking about stuff at the time
