From d128ac9e8a1e44d99b0767e8b2ec347fbb5729f8 Mon Sep 17 00:00:00 2001 From: Lord-Nightmare Date: Fri, 12 Dec 2014 04:15:39 -0500 Subject: xtal.h: Add some more comments about NTSC subcarrier multiples, fixed a mis-ordering, added more to comment about 640khz resonator. (n/w) --- src/emu/drivers/xtal.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/emu/drivers/xtal.h b/src/emu/drivers/xtal.h index 2104d1a2be0..21d57348acc 100644 --- a/src/emu/drivers/xtal.h +++ b/src/emu/drivers/xtal.h @@ -94,8 +94,8 @@ enum XTAL_8_7MHz = 8700000, /* Tandberg TDV 2324 */ XTAL_8_867236MHz = 8867236, /* RCA CDP1869 PAL color clock (~2x PAL subcarrier) */ XTAL_8_867238MHz = 8867238, /* ETI-660 (~2x PAL subcarrier) */ - XTAL_9_216MHz = 9216000, /* Conitec PROF-180X */ XTAL_8_945MHz = 8945000, /* Hit Me */ + XTAL_9_216MHz = 9216000, /* Conitec PROF-180X */ XTAL_9_828MHz = 9828000, /* Universal PCBs */ XTAL_9_8304MHz = 9830400, /* Epson PX-8 */ XTAL_9_987MHz = 9987000, /* Crazy Balloon */ @@ -189,7 +189,7 @@ enum XTAL_30_4761MHz = 30476100, /* Taito JC */ XTAL_30_8MHz = 30800000, /* 15IE-00-013 */ XTAL_32MHz = 32000000, - XTAL_32_22MHz = 32220000, /* Typically used on 90's Data East PCBs */ + XTAL_32_22MHz = 32220000, /* Typically used on 90's Data East PCBs (close to 9x NTSC subcarrier which is 32.215905Mhz*/ XTAL_32_5304MHz = 32530400, /* Seta 2 */ XTAL_33MHz = 33000000, /* Sega Model 3 video board */ XTAL_33_333MHz = 33333000, /* Sega Model 3 CPU board, Vegas */ @@ -209,7 +209,7 @@ enum XTAL_48_66MHz = 48660000, /* Zaxxon */ XTAL_49_152MHz = 49152000, /* Used on some Namco PCBs, Baraduke h/w, System 21, Super System 22 */ XTAL_50MHz = 50000000, /* Williams/Midway T/W/V-unit system */ - XTAL_50_113MHz = 50113000, /* Namco NA-1 */ + XTAL_50_113MHz = 50113000, /* Namco NA-1 (14x NTSC subcarrier)*/ XTAL_52MHz = 52000000, /* Cojag */ XTAL_52_832MHz = 52832000, /* Wang PC TIG video controller */ XTAL_53_693175MHz = 53693175, /* PSX-based h/w, Sony ZN1-2-based (15x NTSC subcarrier) */ @@ -233,7 +233,7 @@ enum XTAL_400kHz = 400000, /* OKI MSM5205 on Great Swordman h/w */ XTAL_455kHz = 455000, /* OKI MSM5205 on Gladiator h/w */ XTAL_512kHz = 512000, /* Toshiba TC8830F */ - XTAL_640kHz = 640000, /* NEC UPD7759, Texas Instruments Speech Chips */ + XTAL_640kHz = 640000, /* NEC UPD7759, Texas Instruments Speech Chips @ 8khz */ XTAL_1_056MHz = 1056000 /* OKI M6295 on Trio The Punch h/w */ }; -- cgit v1.2.3