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cc65/libsrc/atari/is_cmdline_dos.s

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;
; Christian Groessler, May-2016
;
; unsigned char _is_cmdline_dos(void);
;
; returns 0 for non-commandline DOS, 1 for commandline DOS
;
.export __is_cmdline_dos
.import __dos_type
.include "atari.inc"
__is_cmdline_dos:
lda #MAX_DOS_WITH_CMDLINE
cmp __dos_type
lda #0
rol a
rts