Used in: TI 99/4 and other systems Description: The TMS9900 CPU was the first 16-bit microprocessor that could effectively compete in the computer market. In fact the TMS9900 is a single chip implementation of the TM Series 990 minicomputer CPUs. The 9900 has a separate 16-bit address bus and a 16-bit data bus in a 64-pin DIP. AMI is the only known second source for this chip.