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return the hardware tv system, not the ROMs one

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1099 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cpg 2001-11-06 01:22:54 +00:00
parent d10a647baf
commit 56d98bbb93
1 changed files with 9 additions and 2 deletions
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11
libsrc/atari/tvtype.s
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@ -1,9 +1,11 @@
;
; Christian Groessler, December 2000
; Christian Groessler, November 2001
;
; unsigned char get_tv(void)
;
; returns the TV system the machine is using
; 0 - NTSC
; 1 - PAL
;
@ -12,8 +14,13 @@
.proc _get_tv
lda PALNTS
lda PAL ; use hw register, PALNTS is only supported on XL/XE ROM
ldx #0
and #$0e
bne @NTSC
lda #1
rts
@NTSC: txa
rts
.endproc