The 6800 is an 8-bit microprocessor produced by Motorola and released shortly after the Intel 8080 in late 1974. It had 78 instructions, including the (in)famous, undocumented Halt and Catch Fire (HCF) bus test instruction. It may have been the first microprocessor with an index register.
It was usually packaged in a 40 pin DIP (dual-inline package).
Several first...