We had several Victor 9000's. They ran CP/M and a proprietary MS-DOS. They
had built-in codec. They actually predated the IBM PC back in 1980. They
were the best available computers at the time, when the TRS-80 was
prevalent on the market. My dad still may have one on his closet shelf. I
threw mine away when I bought my first PC clone, a 4mhz, 4 mb ram 386SX.