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ad1848.cpp: Room for improvement (nw)

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This commit is contained in:
AJR 2018-05-28 14:53:20 -04:00
parent 5940ecac8d
commit 173ccc2b73
1 changed files with 2 additions and 0 deletions
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src/devices/sound/ad1848.cpp
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@ -2,6 +2,7 @@
// copyright-holders:Carl
// Analog Devices AD1848, main codec in Windows Sound System adapters
// TODO: Emulate pin-compatible Crystal Semiconductor CS4231 and its extra Mode 2 features
#include "emu.h"
#include "sound/ad1848.h"
@ -100,6 +101,7 @@ WRITE8_MEMBER(ad1848_device::write)
case 9:
{
m_play = (data & 1) ? true : false;
// FIXME: provide external configuration for XTAL1 (24.576 MHz) and XTAL2 (16.9344 MHz) inputs
attotime rate = m_play ? attotime::from_hz(((m_regs.dform & 1) ? 16.9344_MHz_XTAL : 24.576_MHz_XTAL)
/ div_factor[(m_regs.dform >> 1) & 7]) : attotime::never;
m_timer->adjust(rate, 0 , rate);