Motorola 6800
A {microprocessor} released shortly after the
{Intel 8080}, in about 1975. It had 78 instructions,
including the undocumented HCF ({Halt and Catch Fire}) bus
test instruction. The 6800 evolved into the {Motorola 6801}
and 6803.
The {6502} was based on the design of the 6800 but had one
less data register and one more index register.
(1994-10-31)