/*.......1.........2.........3.........4.........5.........6.........7.........8 ================================================================================ FILE d_inverter/cfunc.mod Copyright 1991 Georgia Tech Research Corporation, Atlanta, Ga. 30332 All Rights Reserved PROJECT A-8503-405 AUTHORS 14 Jun 1991 Jeffrey P. Murray MODIFICATIONS 30 Sep 1991 Jeffrey P. Murray SUMMARY This file contains the functional description of the code model. INTERFACES FILE ROUTINE CALLED CMevt.c void *cm_event_alloc() void *cm_event_get_ptr() REFERENCED FILES Inputs from and outputs to ARGS structure. NON-STANDARD FEATURES NONE ===============================================================================*/ /*=== INCLUDE FILES ====================*/ #include #include #include #include /*=== CONSTANTS ========================*/ /*=== MACROS ===========================*/ /*=== LOCAL VARIABLES & TYPEDEFS =======*/ /*=== FUNCTION PROTOTYPE DEFINITIONS ===*/ /*============================================================================== FUNCTION cm_d_inverter() AUTHORS 14 Jun 1991 Jeffrey P. Murray MODIFICATIONS 30 Sep 1991 Jeffrey P. Murray SUMMARY This function implements the d_inverter code model. INTERFACES FILE ROUTINE CALLED CMevt.c void *cm_event_alloc() void *cm_event_get_ptr() RETURNED VALUE Returns inputs and outputs via ARGS structure. GLOBAL VARIABLES NONE NON-STANDARD FEATURES NONE ==============================================================================*/ /*=== CM_D_INVERTER ROUTINE ===*/ /************************************************ * The following is the model for the * * digital inverter gate for the * * ATESSE Version 2.0 system. * * * * Created 6/14/91 J.P.Murray * ************************************************/ void cm_d_inverter(ARGS) { /*int i;*/ /* generic loop counter index */ Digital_State_t *out, /* temporary output for inverter */ *out_old; /* previous output for inverter */ /** Setup required state variables **/ if(INIT) { /* initial pass */ /* allocate storage for the outputs */ cm_event_alloc(0,sizeof(Digital_State_t)); /* define load value on inputs */ LOAD(in) = PARAM(input_load); /* retrieve storage for the outputs */ out = out_old = (Digital_State_t *) cm_event_get_ptr(0,0); } else { /* Retrieve previous values */ /* retrieve storage for the outputs */ out = (Digital_State_t *) cm_event_get_ptr(0,0); out_old = (Digital_State_t *) cm_event_get_ptr(0,1); } /** Check on analysis type **/ if (ANALYSIS == DC) { /* DC analysis...output w/o delays */ switch ( INPUT_STATE(in) ) { case ZERO: OUTPUT_STATE(out) = *out = *out_old = ONE; break; case ONE: OUTPUT_STATE(out) = *out = *out_old = ZERO; break; default: OUTPUT_STATE(out) = *out = *out_old = UNKNOWN; break; } } else { /* Transient Analysis */ switch ( INPUT_STATE(in) ) { /* fall to zero value */ case 1: OUTPUT_STATE(out) = *out = ZERO; OUTPUT_DELAY(out) = PARAM(fall_delay); break; /* rise to one value */ case 0: OUTPUT_STATE(out) = *out = ONE; OUTPUT_DELAY(out) = PARAM(rise_delay); break; /* unknown output */ default: OUTPUT_STATE(out) = *out = UNKNOWN; /* based on old value, add rise or fall delay */ if (0 == *out_old) { /* add rising delay */ OUTPUT_DELAY(out) = PARAM(rise_delay); } else { /* add falling delay */ OUTPUT_DELAY(out) = PARAM(fall_delay); } break; } } OUTPUT_STRENGTH(out) = STRONG; }