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poor man's _toascii routine, contributed by Fatih Aygun

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4477 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cpg 2009-11-23 21:35:33 +00:00
parent 314984aae4
commit 5a593b8105
2 changed files with 20 additions and 0 deletions
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1
libsrc/atari/Makefile
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@ -108,6 +108,7 @@ OBJS = _scrsize.o \
sysrmdir.o \ sysrmdir.o \
systime.o \ systime.o \
sysuname.o \ sysuname.o \
toascii.o \
tgi_mode_table.o\ tgi_mode_table.o\
tvtype.o \ tvtype.o \
ucase_fn.o \ ucase_fn.o \

19
libsrc/atari/toascii.s Normal file
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@ -0,0 +1,19 @@
;
; unsigned char __fastcall__ toascii (unsigned char c);
; /* Convert a target specific character to ascii */
;
.export _toascii
.proc _toascii
; Clear the inverse video bit
and #$7F
; X must be zero on return
ldx #0
; Done!
rts
.endproc