the TI99/4A is a beautiful machine. The first computer I ever used back in 1982 was Texas Instruments 990/10 minicomputer (384K) running an operating system ca

the TI99/4A is a beautiful machine. The first computer I ever used back in 1982 was Texas Instruments 990/10 minicomputer (384K) running an operating system called DX10, based on the same instruction set as the 99/4A. That system was originally built for a US Motel operator reservation system. Back in the days when you would quote for developing not only the software but the hardware too! Today if you are interested you can download a 990 emulator and experiment with DX10/DNOS for yourself