SouthWest Technical Products Corporation (SWTPC) was an early microcomputer manufacturer. Unlike most companies of the era, they did not go with the Intel/Zilog 8080/Z80 architecture and S-100 bus. SWTPC chose to use motorola processors (6800, 6809 etc.) and designed their own SS-50 bus.
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The SWTPC 6800 is based on the Motorola 6800. This particular machine has an upgrade card which adds a 6809 processor and allows operation of TSC's FLEX operating system. Donated by Peter Krug.
Rear view of SWTPC 6800 computer and floppy drive unit - a true hobbiests machine, this one has had many additions and modifications.
Inside the SWTPC 6800: At the time of this photo, the 6809 CPU card was installed, which is visible closest to the front of the machine. Behind that is a RAM card. Along the back are interface cards, which include several serial ports, a parallel port, and the diskette controller.