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novag6502: 21.us irq low time is too long for sforte (nw)

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hap 2017-01-28 21:58:37 +01:00
parent 93adfdb5a4
commit a8f87cf855
1 changed files with 4 additions and 0 deletions
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4
src/mame/drivers/novag6502.cpp
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@ -13,6 +13,8 @@
TODO:
- cforteb emulation (was initially sforteba romset)
- verify supercon IRQ and beeper frequency
- sforte irq active time (21.5us is too long)
- sforte/sexpert led handling is correct?
- printer port
******************************************************************************
@ -838,6 +840,8 @@ static MACHINE_CONFIG_DERIVED( sforte, sexpert )
/* basic machine hardware */
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_PROGRAM_MAP(sforte_map)
MCFG_TIMER_MODIFY("irq_on")
MCFG_TIMER_START_DELAY(attotime::from_hz(XTAL_32_768kHz/128) - attotime::from_usec(15)) // active for ?us
MCFG_DEFAULT_LAYOUT(layout_novag_sforte)
MACHINE_CONFIG_END