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-rw-r--r--src/emu/xtal.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/emu/xtal.cpp b/src/emu/xtal.cpp
index 713911abe84..9c4081a1a3d 100644
--- a/src/emu/xtal.cpp
+++ b/src/emu/xtal.cpp
@@ -285,6 +285,7 @@ const double XTAL::known_xtals[] = {
21'281'370, /* 21.28137_MHz_XTAL Radica Tetris (PAL) */
21'300'000, /* 21.3_MHz_XTAL - */
21'477'272, /* 21.477272_MHz_XTAL BMC bowling, some Data East 90's games, Vtech Socrates; (6x NTSC subcarrier) */
+ 21'667'500, /* 21.6675_MHz_XTAL AT&T 610 (80-column display clock) */
22'000'000, /* 22_MHz_XTAL - */
22'032'000, /* 22.032_MHz_XTAL Intellec Series II I/O controller */
22'096'000, /* 22.096_MHz_XTAL ADDS Viewpoint 122 */
@@ -324,6 +325,7 @@ const double XTAL::known_xtals[] = {
27'164'000, /* 27.164_MHz_XTAL Typically used on 90's Taito PCBs to drive the custom chips */
27'210'900, /* 27.2109_MHz_XTAL LA Girl */
27'562'000, /* 27.562_MHz_XTAL Visual 220 */
+ 27'720'000, /* 27.72_MHz_XTAL AT&T 610 (132-column display clock) */
28'000'000, /* 28_MHz_XTAL - */
28'322'000, /* 28.322_MHz_XTAL Saitek RISC 2500, Mephisto Montreux */
28'375'160, /* 28.37516_MHz_XTAL Amiga PAL systems */