Symbolics had its own PC implementation of Lisp: CLOE.
From the Lisp FAQ: "CLOE (Common Lisp Operating Environment) is a cross-development
environment for IBM PCs (MSDOS) and Symbolics Genera. It includes
CLOS, condition error system, generational garbage collection,
incremental compilation, code time/space profiling, and a stack-frame
debugger. It costs from $625 to $4000 and requires 4-8mn RAM and a 386
processor. "
Later they also ported Genera to DEC Alpha. Currently I have access to an implementation which runs on ARM64 and Intel x64.
From the Lisp FAQ: "CLOE (Common Lisp Operating Environment) is a cross-development environment for IBM PCs (MSDOS) and Symbolics Genera. It includes CLOS, condition error system, generational garbage collection, incremental compilation, code time/space profiling, and a stack-frame debugger. It costs from $625 to $4000 and requires 4-8mn RAM and a 386 processor. "
Later they also ported Genera to DEC Alpha. Currently I have access to an implementation which runs on ARM64 and Intel x64.