MAXARGS = 10 ; Maximum number of arguments allowed
REM = $8f ; BASIC token-code
-NAME_LEN = 16 ; maximum length of command-name
-BASIC_BUF= $200
+NAME_LEN = 16 ; Maximum length of command-name
;---------------------------------------------------------------------------
-; Get possible command-line arguments. Goes into the special INIT segment,
+; Get possible command-line arguments. Goes into the special ONCE segment,
; which may be reused after the startup code is run
-.segment "INIT"
+.segment "ONCE"
.proc initmainargs
; Assume that the program was loaded, a moment ago, by the traditional LOAD
; statement. Save the "most-recent filename" as argument #0.
-; Because the buffer, that we're copying into, was zeroed out,
-; we don't need to add a NUL character.
-;
+
+ lda #0 ; The terminating NUL character
ldy FNLEN
cpy #NAME_LEN + 1
bcc L1
- ldy #NAME_LEN - 1 ; limit the length
+ ldy #NAME_LEN ; Limit the length
+ bne L1 ; Branch always
L0: lda (FNADR),y
- sta name,y
-L1: dey
+L1: sta name,y
+ dey
bpl L0
inc __argc ; argc always is equal to, at least, 1
; Find the "rem" token.
-;
+
ldx #0
L2: lda BASIC_BUF,x
- beq done ; no "rem," no args.
+ beq done ; No "rem," no args.
inx
cmp #REM
bne L2
beq done ; End of line reached
inx
cmp #' ' ; Skip leading spaces
- beq next ;
+ beq next
; Found start of next argument. We've incremented the pointer in X already, so
; it points to the second character of the argument. This is useful since we
.endproc
-; These arrays are zeroed before initmainargs is called.
-; char name[16+1];
-; char* argv[MAXARGS+1]={name};
-;
-.bss
+.segment "INIT"
+
term: .res 1
name: .res NAME_LEN + 1
.data
+
+; char* argv[MAXARGS+1]={name};
argv: .addr name
.res MAXARGS * 2