New kinds of instructions were added as well; full support for signed integers, base+offset addressing, and self-repeating operations were akin to the Z80 design[REF] but were all made slightly more general in the 8086.
The 8086 was sequenced[REF] using a mixture of random logic[REF] and microcode and was implemented using depletion-load nMOS circuitry with approximately 20,000 active transistors (29,000 counting all ROM and PLA sites).