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small fixes + add note about fractions

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This commit is contained in:
Michaël Banaan Ananas 2011-08-23 16:21:29 +00:00
parent 1fee976d5d
commit 7596f201b2
1 changed files with 7 additions and 3 deletions
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10
src/emu/drivers/xtal.h
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@ -32,6 +32,10 @@
tolerance so be sure to reference existing parts only and not just
accept direct readings as 100% true.
MAME doesn't yet support fractions in crystal frequencies. For example,
XTAL_3_579545MHz should actually be 3579545.454545...Hz (39375000/11).
This is no problem though: see above note about tolerance.
(Thanks to Guru for starting this documentation.)
**************************************************************************/
@ -113,7 +117,7 @@ enum
XTAL_13_4952MHz = 13495200, /* Used on Shadow Force pcb and maybe other Technos pcbs? */
XTAL_14MHz = 14000000,
XTAL_14_112MHz = 14112000, /* Timex/Sinclair TS2068 */
XTAL_14_31818MHz = 14318180, /* Extremely common, used on 100's of PCBs */
XTAL_14_31818MHz = 14318181, /* Extremely common, used on 100's of PCBs */
XTAL_14_705882MHz = 14705882, /* Aleck64 */
XTAL_14_7456MHz = 14745600, /* Namco System 12 & System Super 22/23 for H8/3002 CPU */
XTAL_15MHz = 15000000, /* Sinclair QL */
@ -148,7 +152,7 @@ enum
XTAL_25_590906MHz = 25590906, /* Atari Jaguar NTSC */
XTAL_25_593900MHz = 25593900, /* Atari Jaguar PAL */
XTAL_25_601712MHz = 25601712, /* Astro Corp.'s Show Hand */
XTAL_26_66666MHz = 26666660, /* Irem M92 but most use 27MHz */
XTAL_26_66666MHz = 26666666, /* Irem M92 but most use 27MHz */
XTAL_26_686MHz = 26686000, /* Typically used on 90's Taito PCBs to drive the custom chips */
XTAL_27MHz = 27000000, /* Some Banpresto games macrossp, Irem M92 and 90's Toaplan games */
XTAL_27_164MHz = 27164000, /* Typically used on 90's Taito PCBs to drive the custom chips */
@ -156,7 +160,7 @@ enum
XTAL_28MHz = 28000000,
XTAL_28_37516MHz = 28375160, /* Amiga PAL systems */
XTAL_28_48MHz = 28480000, /* Chromatics CGC-7900 */
XTAL_28_63636MHz = 28636360, /* Later Leland games and Atari GT, Amiga NTSC , Raiden2 h/w */
XTAL_28_63636MHz = 28636363, /* Later Leland games and Atari GT, Amiga NTSC , Raiden2 h/w */
XTAL_30MHz = 30000000, /* Impera Magic Card */
XTAL_30_4761MHz = 30476100, /* Taito JC */
XTAL_32MHz = 32000000,