Model 100 Manuals
- ftp://ftp.whtech.com/club100/doc/TRS80-M100-User-Guide.pdf
- ftp://ftp.whtech.com/club100/doc/m100qr.pdf
- ftp://ftp.whtech.com/club100/doc/m100ServiceManual.pdf
- ftp://ftp.whtech.com/club100/doc/m100TechReference.pdf
- ftp://ftp.whtech.com/club100/doc/rom_funcs-600.pdf
Other even more valuable info: John R. Hogerhuis: "The best reference on file management is the NEC programmers reference."