$ find -iname '*.nas' | xargs -r grep xlat -i
./src/DOS/macro2.nas:   cs xlatb                 ;AN000;;get bits
./src/DOS/macro2.nas:   cs xlatb                ;AN000;; get bits
./src/DOS/macro2.nas:   cs xlatb                ; get bits
./src/DOS/create.nas:   cs xlatb
./src/DOS/fcb.nas:      call xlatb_in_dosdata
./src/DOS/fcb.nas:      cs xlatb
./src/DOS/fcb.nas:      cs xlatb
./src/DOS/fcb.nas:      CS xlatb
./src/DOS/fcb.nas:xlatb_in_dosdata:
./src/DOS/fcb.nas:      xlatb
./src/DOS/dosmes.nas:   xlatb   ;Get upper case character
./src/DOS/time.nas:     xlatb;Look up days in month
./src/CMD/FORMAT/parse.nas:;In this next section, ES will be used as the base of the XLAT table, provided
./src/CMD/FORMAT/parse.nas:     es xlatb                ;AN000; perform case map
./src/CMD/SHARE/gshare2.nas:   cs xlatb
./src/BIOS/parse.nas:;In this next section, ES will be used as the base of the XLAT table, provided
./src/BIOS/parse.nas:   es xlatb                ;AN000; perform case map
./src/INC/parse.nas:;In this next section, ES will be used as the base of the XLAT table, provided
./src/INC/parse.nas:    es xlatb                ;AN000; perform case map