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authorGravatar Alexey Yakovenko <wakeroid@gmail.com>2010-07-26 10:04:43 +0200
committerGravatar Alexey Yakovenko <wakeroid@gmail.com>2010-07-26 10:04:43 +0200
commitfe3f99c92a8437a353ba12075d6c3273d04c4e3f (patch)
tree34d97babbe5696f21779866fafad217b60c2bead /plugins/sid/sidplay-libs/resid/wave.cc
parent4deca01c3a7edaf66374bd35e6fb50d4d9564b17 (diff)
merged non-android-specific changes from android branch
Diffstat (limited to 'plugins/sid/sidplay-libs/resid/wave.cc')
-rw-r--r--plugins/sid/sidplay-libs/resid/wave.cc148
1 files changed, 0 insertions, 148 deletions
diff --git a/plugins/sid/sidplay-libs/resid/wave.cc b/plugins/sid/sidplay-libs/resid/wave.cc
deleted file mode 100644
index 6f5ec5dd..00000000
--- a/plugins/sid/sidplay-libs/resid/wave.cc
+++ /dev/null
@@ -1,148 +0,0 @@
-// ---------------------------------------------------------------------------
-// This file is part of reSID, a MOS6581 SID emulator engine.
-// Copyright (C) 2002 Dag Lem <resid@nimrod.no>
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-// ---------------------------------------------------------------------------
-
-#define __WAVE_CC__
-#include "wave.h"
-
-RESID_NAMESPACE_START
-
-// ----------------------------------------------------------------------------
-// Constructor.
-// ----------------------------------------------------------------------------
-WaveformGenerator::WaveformGenerator()
-{
- sync_source = this;
-
- set_chip_model(MOS6581);
-
- reset();
-}
-
-
-// ----------------------------------------------------------------------------
-// Set sync source.
-// ----------------------------------------------------------------------------
-void WaveformGenerator::set_sync_source(WaveformGenerator* source)
-{
- sync_source = source;
- source->sync_dest = this;
-}
-
-
-// ----------------------------------------------------------------------------
-// Set chip model.
-// ----------------------------------------------------------------------------
-void WaveformGenerator::set_chip_model(chip_model model)
-{
- if (model == MOS6581) {
- wave__ST = wave6581__ST;
- wave_P_T = wave6581_P_T;
- wave_PS_ = wave6581_PS_;
- wave_PST = wave6581_PST;
- }
- else {
- wave__ST = wave8580__ST;
- wave_P_T = wave8580_P_T;
- wave_PS_ = wave8580_PS_;
- wave_PST = wave8580_PST;
- }
-}
-
-
-// ----------------------------------------------------------------------------
-// Register functions.
-// ----------------------------------------------------------------------------
-void WaveformGenerator::writeFREQ_LO(reg8 freq_lo)
-{
- freq = freq & 0xff00 | freq_lo & 0x00ff;
-}
-
-void WaveformGenerator::writeFREQ_HI(reg8 freq_hi)
-{
- freq = (freq_hi << 8) & 0xff00 | freq & 0x00ff;
-}
-
-void WaveformGenerator::writePW_LO(reg8 pw_lo)
-{
- pw = pw & 0xf00 | pw_lo & 0x0ff;
-}
-
-void WaveformGenerator::writePW_HI(reg8 pw_hi)
-{
- pw = (pw_hi << 8) & 0xf00 | pw & 0x0ff;
-}
-
-void WaveformGenerator::writeCONTROL_REG(reg8 control)
-{
- waveform = (control >> 4) & 0x0f;
- ring_mod = control & 0x04;
- sync = control & 0x02;
-
- reg8 test_next = control & 0x08;
-
- // Test bit set.
- // The accumulator and the shift register are both cleared.
- // NB! The shift register is not really cleared immediately. It seems like
- // the individual bits in the shift register start to fade down towards
- // zero when test is set. All bits reach zero within approximately
- // $2000 - $4000 cycles.
- // This is not modeled. There should fortunately be little audible output
- // from this peculiar behavior.
- if (test_next) {
- accumulator = 0;
- shift_register = 0;
- }
- // Test bit cleared.
- // The accumulator starts counting, and the shift register is reset to
- // the value 0x7ffff8.
- // NB! The shift register will not actually be set to this exact value if the
- // shift register bits have not had time to fade to zero.
- // This is not modeled.
- else if (test) {
- shift_register = 0x7ffff8;
- }
-
- test = test_next;
-
- // The gate bit is handled by the EnvelopeGenerator.
-}
-
-reg8 WaveformGenerator::readOSC()
-{
- return output() >> 4;
-}
-
-// ----------------------------------------------------------------------------
-// SID reset.
-// ----------------------------------------------------------------------------
-void WaveformGenerator::reset()
-{
- accumulator = 0;
- shift_register = 0x7ffff8;
- freq = 0;
- pw = 0;
-
- test = 0;
- ring_mod = 0;
- sync = 0;
-
- msb_rising = false;
-}
-
-RESID_NAMESPACE_STOP