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Programming Sound Cards
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Programming Sound Cards.iso
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sound_31
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cmdline.asm
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Assembly Source File
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1995-01-01
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1KB
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56 lines
Interactive db 1 ; 0 - Off, 1 - On
proc LoadCommandLine near
; Scan the command line for the module name.
mov ds, [cs:PspAddress]
mov si, 128
cld
lodsb
or al,al ; Are we at a null?
je @@noargv
@@MoreThanOne: mov bx,si
xor ah,ah
add bx,ax
@@TopLoop: cmp bx,si
je @@noargv
lodsb
cmp al,' '
je @@TopLoop
cmp al,'-'
jne @@GetFilename
cmp [Byte si],'i'
je @@SetInteractive
cmp [Byte si],'I'
jne @@DecIt
@@SetInteractive:
mov [Byte cs:Interactive],1
jmp @@TopLoop
@@DecIt: dec si
lodsb
@@GetFilename: xor ah,ah
dec si
mov cx,80
@@TopGet: cmp bx,si
je @@StoreFilename
lodsb
cmp al,'.'
jne @@NotPeriod
mov ah,1
@@NotPeriod: cmp al,13
je @@StoreFilename
loop @@TopGet
@@StoreFilename:or ah,ah
jne @@JustZero
mov [Byte si],'.'
mov [Byte si+1],'M'
mov [Byte si+2],'O'
mov [Byte si+3],'D'
add si,4
@@JustZero: mov [Byte si],0
mov [Byte cs:Interactive],0
clc
ret
@@noargv: stc
ret
endp LoadCommandLine