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author Nicola Salmoria <nicola@mamedev.org>2008-07-17 18:07:26 +0000
committer Nicola Salmoria <nicola@mamedev.org>2008-07-17 18:07:26 +0000
commita46b0cb0e88ddb6232ee48a7682108702c0955d0 (patch)
treeb5a5a4ece7802ea80c1d7c8ab1a100b261d4c63f
parente5a0b682da739b16604b09673a394f6d56111827 (diff)
updated comments after refresh rate was verified on the pcb
-rw-r--r--src/mame/drivers/snk68.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/src/mame/drivers/snk68.c b/src/mame/drivers/snk68.c
index 57319d117c3..96ffed6dfe0 100644
--- a/src/mame/drivers/snk68.c
+++ b/src/mame/drivers/snk68.c
@@ -38,11 +38,6 @@ Notes:
fixed by this (earlier notes in this driver talked about "sprite flickerings
and pop-ups" but I don't know where they happened).
-TODO:
------
-- Number of raster lines unknown. Currently set to 264 which gives a 59.19Hz
- refresh rate.
-
***************************************************************************/
#include "driver.h"
@@ -615,7 +610,10 @@ static MACHINE_DRIVER_START( pow )
/* video hardware */
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
- MDRV_SCREEN_RAW_PARAMS(XTAL_24MHz/4, 384, 0, 256, 264, 16, 240) // inaccurate
+ // the screen parameters are guessed but should be accurate. They
+ // give a theoretical refresh rate of 59.1856Hz while the measured
+ // rate on a SAR board is 59.16Hz.
+ MDRV_SCREEN_RAW_PARAMS(XTAL_24MHz/4, 384, 0, 256, 264, 16, 240)
MDRV_GFXDECODE(pow)
MDRV_PALETTE_LENGTH(0x800)