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dragon: fixed clockspeed (nw)

Browse Source 
http://mametesters.org/view.php?id=6772
This commit is contained in:
hap 2017-11-22 23:32:44 +01:00
parent 49fa0203d2
commit 8aede10f25
2 changed files with 4 additions and 3 deletions
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1
src/emu/drivers/xtal.h
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@ -152,6 +152,7 @@ enum
XTAL_14MHz = 14000000,
XTAL_14_112MHz = 14112000, /* Timex/Sinclair TS2068 */
XTAL_14_192640MHz = 14192640, /* Reported by Central Data 2650 document, true xtal unchecked on PCB */
XTAL_14_218MHz = 14218000, /* Dragon */
XTAL_14_3MHz = 14300000, /* Agat-7 */
XTAL_14_314MHz = 14314000, /* Taito TTL Board */
XTAL_14_31818MHz = 14318181, /* Extremely common, used on 100's of PCBs (4x NTSC subcarrier) */

6
src/mame/drivers/dragon.cpp
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@ -175,7 +175,7 @@ SLOT_INTERFACE_END
static MACHINE_CONFIG_START( dragon_base )
MCFG_DEVICE_MODIFY(":")
MCFG_DEVICE_CLOCK(XTAL_4_433619MHz)
MCFG_DEVICE_CLOCK(XTAL_14_218MHz/4)
// basic machine hardware
MCFG_CPU_ADD("maincpu", M6809E, DERIVED_CLOCK(1, 1))
@ -200,7 +200,7 @@ static MACHINE_CONFIG_START( dragon_base )
MCFG_PIA_IRQA_HANDLER(WRITELINE(coco_state, pia1_firq_a))
MCFG_PIA_IRQB_HANDLER(WRITELINE(coco_state, pia1_firq_b))
MCFG_SAM6883_ADD(SAM_TAG, XTAL_4_433619MHz, MAINCPU_TAG, AS_PROGRAM)
MCFG_SAM6883_ADD(SAM_TAG, XTAL_14_218MHz/4, MAINCPU_TAG, AS_PROGRAM)
MCFG_SAM6883_RES_CALLBACK(READ8(dragon_state, sam_read))
MCFG_CASSETTE_ADD("cassette")
MCFG_CASSETTE_FORMATS(coco_cassette_formats)
@ -280,7 +280,7 @@ static MACHINE_CONFIG_DERIVED( d64plus, dragon64 )
MCFG_PALETTE_ADD_MONOCHROME("palette")
// crtc
MCFG_MC6845_ADD("crtc", HD6845, "plus_screen", 14218000 / 8) /* unknown clock, hand tuned to get ~50 fps */
MCFG_MC6845_ADD("crtc", HD6845, "plus_screen", XTAL_14_218MHz/4/2)
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8)
MCFG_MC6845_UPDATE_ROW_CB(d64plus_state, crtc_update_row)