1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-24 11:31:31 +00:00

Added the new toascii function for the CBMs.

git-svn-id: svn://svn.cc65.org/cc65/trunk@4425 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2009-11-02 16:23:32 +00:00
parent 38641d9af8
commit 3b06aaaf85
2 changed files with 39 additions and 0 deletions

View File

@ -79,6 +79,7 @@ S_OBJS = c_acptr.o \
scratch.o \
sysremove.o \
sysrename.o \
toascii.o \
wherex.o \
wherey.o \
write.o

38
libsrc/cbm/toascii.s Normal file
View File

@ -0,0 +1,38 @@
;
; Ullrich von Bassewitz, 2009-11-02
;
; unsigned char __fastcall__ toascii (unsigned char c);
; /* Convert a target specific character to ascii */
;
.export _toascii
.macpack generic
.proc _toascii
; Check for code between 65 and 90
cmp #$41
blt @L1
cmp #$5B
bge @L1
; Code between 65 and 90
ora #$20
rts
; Check for code between 193 and 219
@L1: cmp #$C1
blt @L9
cmp #$DC
bge @L9
; Code between 193 and 219
and #$7F
@L9: rts
.endproc