+ WORD p_load_buffer_size,'LOAD-BUFFER-SIZE',dovariable
+ ;; ( -- a )
+ ;; The buffer size (in bytes) used by LOAD-FILE
+ dq 15000
+
+ WORD p_open_file,'OPEN-FILE',fasm
+ ;; ( chaz* n -- fd )
+ ;; Open the nominated file
+ pushr rsi
+ add rsp,8 ; drop n ... assuming NUL-ended string
+ push qword 0
+ push qword 0
+ DOFORTH sys_open
+ popr rsi
+ next