141   wave = model_wave[model][waveform & 0x7];  in set_chip_model()
172 bool do_pre_writeback(reg8 waveform_prev, reg8 waveform, bool is6581)  in do_pre_writeback()  argument
178     if (waveform == 8)  in do_pre_writeback()
184             ((((waveform_prev & 0x3) == 0x1) && ((waveform & 0x3) == 0x2))  in do_pre_writeback()
185             || (((waveform_prev & 0x3) == 0x2) && ((waveform & 0x3) == 0x1))))  in do_pre_writeback()
193   reg8 waveform_prev = waveform;  in writeCONTROL_REG()
195   waveform = (control >> 4) & 0x0f;  in writeCONTROL_REG()
201   wave = model_wave[sid_model][waveform & 0x7];  in writeCONTROL_REG()
209   no_noise = waveform & 0x8 ? 0x000 : 0xfff;  in writeCONTROL_REG()
211   no_pulse = waveform & 0x4 ? 0x000 : 0xfff;  in writeCONTROL_REG()
239     if (do_pre_writeback(waveform_prev, waveform, sid_model == MOS6581)) {  in writeCONTROL_REG()
251   if (waveform) {  in writeCONTROL_REG()
299   waveform = 0;  in reset()