Apply N163 slide shift if linear pitch is disabled

Addresses #276.
Dn-Programming-Core-Management · Jul 20, 2024 · 4cc1a5e · 4cc1a5e
1 parent d92a3a1
commit 4cc1a5e
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Showing 3 changed files with 816 additions and 802 deletions.
diff --git a/Source/drivers/asm/effects.s b/Source/drivers/asm/effects.s
@@ -518,6 +518,12 @@ ft_portamento_up:
 	lda #$00
 	sta var_Temp16 + 1
 .if .defined(USE_N163)
+.if .defined(USE_LINEARPITCH)		;; !! !!
+	lda var_SongFlags
+	and #FLAG_LINEARPITCH
+	bne :+
+	;; !! !! only apply N163 pitch slide shift when linear pitch is disabled
+.endif
     lda ft_channel_type, x
     cmp #CHAN_N163
     bne :+
@@ -539,6 +545,12 @@ ft_portamento_down:
 	lda #$00
 	sta var_Temp16 + 1
 .if .defined(USE_N163)
+.if .defined(USE_LINEARPITCH)
+	lda var_SongFlags
+	and #FLAG_LINEARPITCH
+	bne :+
+	;; !! !! only apply N163 pitch slide shift when linear pitch is disabled
+.endif
     lda ft_channel_type, x
     cmp #CHAN_N163
     bne :+