HP 9000 series 200/300 BASIC Compiler, Assembler

[Michael Fehlhammer]

Recently I acqired a liking for the early M68000 workstations like the 9836. I consider them as the powerful successors to series 80 and want to use them as HP BASIC machines only ( not PASCAL or HP-UX).
Besides using the BASIC interpreter ( ROM or disk version ), it would be nice to have a compatible compiler ( preferably version 5.1 compatible, and preferably the HP product, not third party), to gain more speed.
Does anyone have such a compiler and has used it?

Interpreted HP BASIC for these machines seem to lack support for assembler programming: There is no PEEK and POKE function nor a CALL function that transfers program execution to a machine code routine.
As far I understood from old software ads, assembler programming from a BASIC environment would require a compiler plus additional libraries for mixed language programming.
Has anyone got these tools, or even has experience in assembler programming the 200/300 series?