This has nothing to do with compiling to code for other architectures!
This is just for the record regarding the history of *assemblers*.
Here is a 1984 version of the DEC VAX-11 MACRO-32 *assembler* source
listings:
http://www.bitsavers.org/pdf/dec/vax/microfiche/vms-source-listings/AH-BT13…
Unfortunately, they don't have the ASCII text attached, so you can't
search. Go up a level to find the linker, etc.
- Aron