more sane directory name, updated binaries

src/kernal/init/setup_pal_ntsc.s

@@ -0,0 +1,65 @@
+// #LAYOUT# STD *        #TAKE
+// #LAYOUT# X16 *        #IGNORE
+// #LAYOUT# *   KERNAL_0 #TAKE
+// #LAYOUT# *   *        #IGNORE
+
+// Detect video system (PAL/NTSC), use method by Graham, as it is short and reliable
+// see here: https://codebase64.org/doku.php?id=base:detect_pal_ntsc
+
+
+setup_pal_ntsc:
+
+	lda VIC_RASTER
+!:
+	cmp VIC_RASTER
+	beq !-
+	bmi setup_pal_ntsc
+
+	// Result in A, if no interrupt happened during the test:
+	// #$37 -> 312 rasterlines, PAL,  VIC 6569
+	// #$06 -> 263 rasterlines, NTSC, VIC 6567R8
+	// #$05 -> 262 rasterlines, NTSC, VIC 6567R56A
+
+	cmp #$07
+	bcc setup_ntsc
+
+	// FALLTROUGH
+
+setup_pal:
+
+	lda #$01
+	skip_2_bytes_trash_nvz
+
+	// FALLTROUGH
+
+setup_ntsc:
+
+	lda #$00
+
+	// FALLTROUGH
+
+setup_pal_ntsc_end:
+
+	sta TVSFLG
+
+	// FALLTROUGH
+
+setup_irq_timer: // entry point needed by UP9600 and CIA1 burst mod support
+
+	// Sets up IRQ timer in CIA1 to ~1/60th of a second,
+	// depending on the detected video system
+
+	// Retrieve video system (0 - NTSC, 1 - PAL), assume PAL for unknown values
+
+	ldx TVSFLG
+	beq !+
+	ldx #$01
+!:
+	// Setup interval for timer A in CIA1
+
+	lda irq_timing_lo, x
+	sta CIA1_TIMALO                    // $DC04
+	lda irq_timing_hi, x
+	sta CIA1_TIMAHI                    // $DC05
+
+	rts