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SimCode

SimCode - Programming language

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SimCode is a programming language created in 1997.

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CircuitMaker is electronic design automation software for printed circuit board designs targeted at the hobby, hacker, and maker community. CircuitMaker is available as freeware, and the hardware designed with it may be used for commercial and non-commercial purposes without limitations. It is currently available publicly as version 1.3 by Altium Limited, with the first non-beta release on January 17, 2016.. Read more on Wikipedia...


Example from the web:
//============================================================ //Section 1 # ls74 source //1/2- 74LS74 D flip-flop Digital SimCode Model //typical prop delay values from TI 1981 2nd edition data book //============================================================ //Section 2 INPUTS VCC, GND, PRE, DATA, CLK, CLR; OUTPUTS VCC_LD, PRE_LD, DATA_LD, CLK_LD, CLR_LD, QN, Q; INTEGERS tblIndex; REALS tplh_val, tphl_val, ts_val, th_val, trec_val, tt_val, temp_tp,       clk_twl, clk_twh, pre_clr_twl, ril_val, rih_val, ricc_val; PWR_GND_PINS(VCC,GND);     //set pwr_param and gnd_param values SUPPLY_MIN_MAX(4.75,5.25); //test for min supply=4.75 and max supply=5.25 VOL_VOH_MIN(0.2,-0.4,0.1); //vol_param=gnd_param+0.2,voh_param=pwr_param-0.4 VIL_VIH_VALUE(1.25,1.35);  //set input threshold values: vil and vih IO_PAIRS(PRE:PRE_LD, DATA:DATA_LD, CLK:CLK_LD, CLR:CLR_LD); //Section 3 IF (init_sim) THEN  BEGIN        //select prop delay, setup, hold, and width times   //NOTE: both ttlh and tthl are the same value   tt_val= (MIN_TYP_MAX(tt_param: NULL, 5n,  NULL));   temp_tp= (PWL_TABLE(sim_temp: -75, -5n, 125, 5n)); //tp temperature affect   tplh_val= (MIN_TYP_MAX(tp_param: NULL, 14n, 25n) + temp_tp);   tphl_val= (MIN_TYP_MAX(tp_param: NULL, 20n, 40n) + temp_tp);   ts_val= (20n);   th_val= (5n);   trec_val= (5n);   clk_twl= (25n);      //not specified - derived from fmax   clk_twh= (25n);   pre_clr_twl= (20n);   //LS stdout drive IOL max=8mA @ VOL typ=0.35V:rol_param=0.35V/8mA=43.75   //LS stdout drive IOL max=8mA @ VOL max=0.5V: rol_param=0.5V/8mA=62.5   rol_param= (MIN_TYP_MAX(drv_param: 62.5, 43.75,  NULL));   //LS stdout drive IOS min=20mA @ VCC max=5.25V: roh_param=5.25V/20mA=262.5   //LS stdout drive IOS max=100mA @ VCC max=5.25V:roh_param=5.25V/100mA=52.5   roh_param= (MIN_TYP_MAX(drv_param: 262.5, NULL, 52.5));   //LS input load IIH max=20uA @ Vin=2.7V: ril= (2.7-vol_param)/20uA=125k   ril_val= (MIN_TYP_MAX(ld_param: NULL, NULL, 125k));   //LS input load IIL max=-0.4mA @ Vin=0.4V:rih= (voh_param-0.4)/0.4mA=10.5k   rih_val= (MIN_TYP_MAX(ld_param: NULL, NULL, 10.5k));   //Icc @ 5V: 2500= 4mA/2 typical, 1250= 8mA/2 max   ricc_val= (MIN_TYP_MAX(i_param: NULL, 2500, 1250));   STATE Q = ONE;            // initialize output states   STATE QN = ZERO;   EXIT;  END; //Section 4 DRIVE Q QN = (v0=vol_param,v1=voh_param,ttlh=tt_val,tthl=tt_val); LOAD PRE_LD DATA_LD CLK_LD CLR_LD = (v0=vol_param,r0=ril_val,v1=voh_param,r1=rih_val,io=1e9,t=1p); //Section 5 EXT_TABLE tblIndex PRE CLR CLK DATA    Q     QN 0   1   X   X       H     L 1   0   X   X       L     H 0   0   X   X       H     H 1   1   ^   X       DATA  ~DATA 1   1   X   X       Q     ~Q; LOAD VCC_LD = (v0=gnd_param,r0=ricc_val,t=1p); //Section 6 IF (warn_param) THEN   BEGIN     IF (PRE && CLR) THEN       BEGIN         SETUP_HOLD(CLK=LH DATA Ts=ts_val Th=th_val "CLK->DATA");         RECOVER(CLK=LH PRE CLR Trec=trec_val "CLK->PRE or CLR");         WIDTH(CLK Twl=clk_twl Twh=clk_twh "CLK");         WIDTH(PRE CLR Twl= pre_clr_twl "PRE or CLR");       END;   END; //Section 7 DELAY Q QN =   CASE (TRAN_LH) : tplh_val   CASE (TRAN_HL) : tphl_val END; EXIT;

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