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author Angelo Salese <salese_corp_ltd@email.it>2014-11-24 02:11:33 +0100
committer Angelo Salese <salese_corp_ltd@email.it>2014-11-24 02:11:33 +0100
commit67cbf2f018d38c8fb5641cb7f4ae3a1ab1aaadaa (patch)
tree3d14d3216bfe4279a5e22d6447b44827d40f235e
parent7b747b9e7a67584987babbf3ca950324ab6232ce (diff)
After-thoughts, (nw)
-rw-r--r--src/mame/drivers/dec0.c3
-rw-r--r--src/mame/drivers/taitojc.c2
2 files changed, 3 insertions, 2 deletions
diff --git a/src/mame/drivers/dec0.c b/src/mame/drivers/dec0.c
index 08bd6349eb4..7c0cb65366c 100644
--- a/src/mame/drivers/dec0.c
+++ b/src/mame/drivers/dec0.c
@@ -1256,7 +1256,8 @@ WRITE_LINE_MEMBER(dec0_state::sound_irq2)
/******************************************************************************/
-/* TODO: These are raw guesses, only to get ~57,41 Hz */
+/* This is guesswork, in order to get ~57,41 Hz.
+ * If real Pixel Clock isn't 5 MHz then htotal/vtotal is different too ... */
#define DEC0_PIXEL_CLOCK XTAL_20MHz/4
#define DEC0_HTOTAL 320
#define DEC0_HBEND 0
diff --git a/src/mame/drivers/taitojc.c b/src/mame/drivers/taitojc.c
index bccd5a13a01..7a3e678c72e 100644
--- a/src/mame/drivers/taitojc.c
+++ b/src/mame/drivers/taitojc.c
@@ -436,7 +436,7 @@ static const int dendego_pressure_table[0x100] =
// VSync - 55.6795Hz
// HSync - 24.639kHz / 24.690kHz (may be inaccurate)
-// TODO: interlacing (hence the different HSync values)
+// TODO: why different HSyncs? 24 kHz assumes medium res monitor, so it can't be interlacing.
#define HTOTAL (812)
#define HBEND (0)
#define HBSTART (512)