The TX-0 was an 18-bit computer with a 16-bit address range. First two bits of machine word designate instruction and remaining 16 bits are used to specify memory location or operand for special "operate" instruction. First two bits could create four possible instructions, which included store, add, and conditional branch instructions as a basic set. The fourth instruction, 'operate', took additional operands and allowed access to a number of 'micro-orders' which could be used separately or together to provide many other useful instructions. An 'add' instruction took 10 microseconds."
DEC, a shame.-
... and Sun! They -were- high end workstations in the 90's.-
(There are several interesting features out there, about Sun ...)
Hey, at least we are still using the result of their labors and innovation, in a sense, so, there's that :)
- "The Computer Pioneers: The TX-0"
... sounds totally like some Anime title or somethin' :)