Subversion Repositories ao486

//======================================================== conditions

wire cond_0 = exception_init || wr_debug_init;

wire cond_1 = ~(class_trap) && ~(class_abort);

wire cond_2 = wr_is_esp_speculative;

wire cond_3 = vector != `EXCEPTION_DB;

wire cond_4 = vector == `EXCEPTION_DB;

wire cond_5 = wr_debug_init && ~(wr_string_in_progress_final);

wire cond_6 = wr_debug_init && wr_string_in_progress_final;

wire cond_7 = shutdown_start == `FALSE && count > 2'd0 && exception_type != `EXCEPTION_TYPE_DOUBLE_FAULT && (

        (last_type == `EXCEPTION_TYPE_CONTRIBUTORY && exception_type == `EXCEPTION_TYPE_CONTRIBUTORY) ||

        (last_type == `EXCEPTION_TYPE_PAGE_FAULT   && exception_type == `EXCEPTION_TYPE_CONTRIBUTORY) ||

        (last_type == `EXCEPTION_TYPE_PAGE_FAULT   && exception_type == `EXCEPTION_TYPE_PAGE_FAULT));

wire cond_8 = shutdown_start == `FALSE;

wire cond_9 = shutdown_start;

wire cond_10 = shutdown;

wire cond_11 = interrupt_done;

//======================================================== saves

wire  exc_soft_int_to_reg =

    (cond_0 && ~cond_7 && cond_8)? (    `FALSE) :

    (cond_11)? (    `FALSE) :

    exc_soft_int;

wire  exc_push_error_to_reg =

    (cond_0 && ~cond_7 && cond_8)? ( push_error) :

    (cond_11)? ( `FALSE) :

    exc_push_error;

wire [1:0] count_to_reg =

    (cond_0 && ~cond_7 && cond_8)? (     count + 2'd1) :

    count;

wire [31:0] exc_eip_to_reg =

    (cond_0 && ~cond_1)? ( trap_eip) :

    (cond_0 && cond_4 && cond_5)? ( wr_eip) :

    (cond_0 && cond_4 && cond_6)? ( exception_eip_from_wr) :

    (cond_11)? ( (interrupt_string_in_progress)? exception_eip_from_wr : wr_eip) :

    exc_eip;

wire  external_to_reg =

    (cond_0)? ( `TRUE) :

    (cond_11)? ( `TRUE) :

    external;

wire [1:0] last_type_to_reg =

    (cond_0 && ~cond_7 && cond_8)? ( exception_type) :

    last_type;

wire [8:0] exc_vector_full_to_reg =

    (cond_0 && cond_7)? ( { 1'b1, `EXCEPTION_DF }) :

    (cond_0 && ~cond_7 && cond_8)? ( { 1'b0, vector }) :

    (cond_0 && cond_9)? ( { 1'b0, vector }) :

    (cond_11)? ( { 1'b0, interrupt_vector }) :

    exc_vector_full;

wire [15:0] exc_error_code_to_reg =

    (cond_0 && cond_7)? ( 16'd0) :

    (cond_0 && ~cond_7 && cond_8)? ( error_code) :

    (cond_11)? ( 16'd0) :

    exc_error_code;

wire  exc_soft_int_ib_to_reg =

    (cond_0 && ~cond_7 && cond_8)? ( `FALSE) :

    (cond_11)? ( `FALSE) :

    exc_soft_int_ib;

wire  shutdown_to_reg =

    (cond_0 && cond_9)? ( `TRUE) :

    shutdown;

//======================================================== always

//======================================================== sets

assign exc_set_rflag =

    (cond_0 && cond_1 && cond_3)? (`TRUE) :

    1'd0;

assign exc_dec_reset =

    (cond_0)? (`TRUE) :

    (cond_10)? (`TRUE) :

    (cond_11)? (`TRUE) :

    1'd0;

assign exc_restore_esp =

    (cond_0 && cond_1 && cond_2)? (`TRUE) :

    1'd0;

assign exc_micro_reset =

    (cond_0)? (`TRUE) :

    (cond_10)? (`TRUE) :

    (cond_11)? (`TRUE) :

    1'd0;

assign exc_wr_reset =

    (cond_0)? (`TRUE) :

    (cond_10)? (`TRUE) :

    (cond_11)? (`TRUE) :

    1'd0;

assign exc_rd_reset =

    (cond_0)? (`TRUE) :

    (cond_10)? (`TRUE) :

    (cond_11)? (`TRUE) :

    1'd0;

assign exc_exe_reset =

    (cond_0)? (`TRUE) :

    (cond_10)? (`TRUE) :

    (cond_11)? (`TRUE) :

    1'd0;

assign exception_start =

    (cond_0 && ~cond_7 && cond_8)? (`TRUE) :

    1'd0;