#include "driver.h" #include "crbaloon.h" /************************************************************************ * crbaloon Sound System Analog emulation * Jan 2006, Derrick Renaud ************************************************************************/ /* Timing Sources */ #define CRBALOON_16H 9987000.0/2/2/16 /* Nodes - Adjusters */ #define CRBALOON_VR2 NODE_05 #define CRBALOON_VR3 NODE_06 /* Nodes - Sounds */ #define CRBALOON_LAUGH_SND NODE_80 #define CRBALOON_MUSIC_SND NODE_81 static const discrete_555_desc desc_crbaloon_laugh_osc = { DISC_555_OUT_SQW | DISC_555_OUT_DC, 5, // B+ voltage of 555 DEFAULT_555_VALUES }; static const discrete_dac_r1_ladder desc_crbaloon_music_dac = { 3, {0, RES_K(470), RES_K(120)}, 5, RES_K(470), 0, 0 }; DISCRETE_SOUND_START(crbaloon) /************************************************ * Input register mapping ************************************************/ DISCRETE_INPUT_LOGIC(CRBALOON_LAUGH_EN) DISCRETE_INPUT_LOGIC(CRBALOON_MUSIC_EN) DISCRETE_INPUT_DATA (CRBALOON_MUSIC_DATA) DISCRETE_ADJUSTMENT_TAG(CRBALOON_VR2, 1, 0, 0.5, DISC_LINADJ, "VR2") DISCRETE_ADJUSTMENT_TAG(CRBALOON_VR3, 1, 0, 1, DISC_LINADJ, "VR3") /************************************************ * Laugh is a VCO modulated by a constant * square wave. ************************************************/ DISCRETE_555_ASTABLE(NODE_10, 1, RES_K(10), RES_K(100), CAP_U(1), &desc_crbaloon_laugh_osc) DISCRETE_CRFILTER_VREF(NODE_11, 1, NODE_10, 1.0/(1.0/RES_K(5) + 1.0/RES_K(10) + 1.0/RES_K(100)), // 5k & 10k are 555 internal CAP_U(10), /* The following will calculate the reference control voltage with no signal applied to the cap. */ 5.0* (1.0/(1.0/RES_K(10) + 1.0/RES_K(100))) / (RES_K(5)+(1.0/(1.0/RES_K(10) + 1.0/RES_K(100)))) ) DISCRETE_555_ASTABLE_CV(NODE_12, CRBALOON_LAUGH_EN, RES_K(1), RES_K(22), CAP_U(.1), NODE_11, &desc_crbaloon_laugh_osc) DISCRETE_MULTIPLY(NODE_13, 1, NODE_12, CRBALOON_VR2) DISCRETE_CRFILTER(CRBALOON_LAUGH_SND, 1, NODE_13, RES_K(20), CAP_U(1)) /************************************************ * Music Generator is amplitude modulated by a * linear ramp. ************************************************/ DISCRETE_NOTE(NODE_20, 1, CRBALOON_16H / 2, CRBALOON_MUSIC_DATA, 255, 7, DISC_CLK_IS_FREQ) DISCRETE_DAC_R1(NODE_21, CRBALOON_MUSIC_EN, NODE_20, DEFAULT_TTL_V_LOGIC_1, &desc_crbaloon_music_dac) // DISCRETE_RAMP(NODE_21, 1, RAMP, GRAD, MIN, MAX, CLAMP) DISCRETE_MULTIPLY(NODE_22, 1, NODE_21, CRBALOON_VR3) DISCRETE_CRFILTER(CRBALOON_MUSIC_SND, 1, NODE_22, RES_K(50), CAP_U(1)) /************************************************ * Final mix and output. ************************************************/ DISCRETE_ADDER2(NODE_90, 1, CRBALOON_LAUGH_SND, CRBALOON_MUSIC_SND) DISCRETE_CRFILTER(NODE_91, 1, NODE_90, RES_K(100), CAP_U(1)) DISCRETE_OUTPUT(NODE_91, 65000.0/12) DISCRETE_SOUND_END