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diegovalve |
/**********************************************************************************
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Theia, Ray Cast Programable graphic Processing Unit.
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Copyright (C) 2010 Diego Valverde (diego.valverde.g@gmail.com)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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***********************************************************************************/
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/**********************************************************************************
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Description:
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This is the main Finite State Machine.
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**********************************************************************************/
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`timescale 1ns / 1ps
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`include "aDefinitions.v"
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`define CU_AFTER_RESET_STATE 0
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`define CU_WAIT_FOR_INITIAL_CONFIGURATION 1
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`define CU_TRIGGER_CONFIGURATION_DATA_READ 2
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`define CU_WAIT_FOR_CONFIG_DATA_READ 3
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`define CU_ACK_CONFIG_DATA_READ 4
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`define CU_PRECALCULATE_CONSTANTS 5
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`define CU_WAIT_FOR_CONSTANT 6
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`define CU_ACK_PRECALCULATE_CONSTANTS 7
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`define CU_WAIT_FOR_TASK 8
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`define CU_READ_TASK_DATA 9
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`define CU_WAIT_TASK_DATA_READ 10
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`define CU_ACK_TASK_DATA_READ 11
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`define CU_TRIGGER_RGU 12
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`define CU_WAIT_FOR_RGU 13
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`define CU_ACK_RGU 14
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`define CU_TRIGGER_GEO 15
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`define CU_WAIT_FOR_GEO_SYNC 16
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//`define CU_CHECK_AABBIU_REQUEST 17
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`define CU_TRIGGER_TCC 17
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//`define CU_CHECK_BIU_REQUEST 18
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`define CU_TRIGGER_TFF 18
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//`define CU_CHECK_GEO_DONE 19
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`define CU_WAIT_FOR_TFF 19
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`define CU_TRIGGER_AABBIU 20
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`define CU_WAIT_FOR_AABBIU 21
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`define CU_TRIGGER_BIU 22
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`define CU_WAIT_FOR_BIU 23
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`define CU_ACK_UCODE 24
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`define CU_TRIGGER_PSU 25
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`define CU_WAIT_FOR_PSU 26
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`define CU_ACK_PSU 27
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`define CU_TRIGGER_PCU 28
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`define CU_WAIT_FOR_PCU 29
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`define CU_ACK_PCU 30
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`define CU_CHECK_HIT 31
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`define CU_CLEAR_REGISTERS 32
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`define CU_WAIT_CLEAR_REGISTERS 33
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`define CU_ACK_CLEAR_REGISTERS 34
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`define CU_TRIGGER_PSU_WITH_TEXTURE 35
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`define WAIT_FOR_TCC 36
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`define CU_TRIGGER_NPU 37
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`define CU_WAIT_NPU 38
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`define CU_ACK_NPU 39
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`define CU_PERFORM_INTIAL_CONFIGURATION 40
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`define CU_SET_PICTH 41
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//--------------------------------------------------------------
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module ControlUnit
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(
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input wire Clock,
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input wire Reset,
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input wire[15:0] iControlRegister,
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input wire iExternalBus_DataReady,
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input wire iBusUnitDone,
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output reg oGFUEnable,
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input wire iTriggerAABBIURequest,
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input wire iTriggerBIURequest,
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input wire iTriggertTCCRequest,
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output reg oUCodeEnable,
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output reg[`ROM_ADDRESS_WIDTH-1:0] oUCodeInstructioPointer,
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input wire iUCodeDone,
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input wire iUCodeReturnValue,
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input wire iGFUDone,
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input wire iGEOSync,
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output reg oTriggerTFF,
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input wire iTFFDone,
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input wire MST_I,
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output reg[2:0] oRamBusOwner,
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input wire iIODone,
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output reg oSetCurrentPitch,
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//output reg //oIncCurrentPitch,
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//output wire[`WIDTH-1:0] oPitchInitialValue,
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output reg oIOWritePixel
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);
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//Internal State Machine varibles
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reg [5:0] CurrentState;
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reg [5:0] NextState;
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integer ucode_file;
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reg rResetHitFlop,rHitFlopEnable;
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wire wHit;
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`ifdef DUMP_CODE
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integer log;
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initial
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begin
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$display("Opening ucode dump file....\n");
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ucode_file = $fopen("CU.log","w");
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end
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`endif
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wire[`ROM_ADDRESS_WIDTH-1:0] wAABBIUAddress;
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assign wAABBIUAddress = (iControlRegister[`CR_USER_AABBIU] == 1'b1) ? `USER_AABBIU_UCODE_ADDRESS : `AABBIU_UCODE_ADDRESS;
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//--------------------------------------------------------------
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FFToggleOnce_1Bit FFTO1
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(
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.Clock( Clock ),
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.Reset( rResetHitFlop ),
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.Enable( rHitFlopEnable && iUCodeDone ),
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.S( iUCodeReturnValue ),
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.Q( wHit )
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);
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//--------------------------------------------------------------
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`ifdef DEBUG
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always @ ( wHit )
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begin
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`LOGME "*** Triangle HIT ***\n");
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end
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`endif
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//Next states logic and Reset sequence
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always @(posedge Clock or posedge Reset)
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begin
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if (Reset)
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CurrentState <= `CU_AFTER_RESET_STATE;
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else
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CurrentState <= NextState;
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end
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//--------------------------------------------------------------
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always @ ( * )
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begin
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case (CurrentState)
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//-----------------------------------------
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`CU_AFTER_RESET_STATE:
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begin
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`ifdef DEBUG
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`LOGME"%d CU_AFTER_RESET_STATE\n",$time);
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`endif
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oRamBusOwner <= 0;
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oUCodeInstructioPointer <= `INITIAL_UCODE_ADDRESS;
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oGFUEnable <= 0;
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oUCodeEnable <= 0;
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oIOWritePixel <= 0;
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rResetHitFlop <= 1;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 1;
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//oIncCurrentPitch <= 0;
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NextState <= `CU_WAIT_FOR_INITIAL_CONFIGURATION;
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end
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//-----------------------------------------
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`CU_WAIT_FOR_INITIAL_CONFIGURATION:
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begin
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$display("CU_WAIT_FOR_INITIAL_CONFIGURATION");
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// `ifdef DEBUG
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// `LOGME"%d Control: CU_WAIT_FOR_INITIAL_CONFIGURATION\n",$time);
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// `endif
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oRamBusOwner <= 0;
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oUCodeInstructioPointer <= 0;
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oGFUEnable <= 0;
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oUCodeEnable <= 0;
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oIOWritePixel <= 0;
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rResetHitFlop <= 1;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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if ( MST_I )
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NextState <= `CU_PERFORM_INTIAL_CONFIGURATION;//`CU_WAIT_FOR_CONFIG_DATA_READ;
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else
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NextState <= `CU_WAIT_FOR_INITIAL_CONFIGURATION;
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end
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//-----------------------------------------
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`CU_PERFORM_INTIAL_CONFIGURATION:
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begin
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oRamBusOwner <= 0;
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oUCodeInstructioPointer <= 0;
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oGFUEnable <= 0;
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oUCodeEnable <= 0;
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oIOWritePixel <= 0;
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rResetHitFlop <= 1;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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if ( MST_I )
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NextState <= `CU_PERFORM_INTIAL_CONFIGURATION;//`CU_WAIT_FOR_CONFIG_DATA_READ;
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else
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NextState <= `CU_CLEAR_REGISTERS;
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end
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//-----------------------------------------
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`CU_CLEAR_REGISTERS:
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begin
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`ifdef DEBUG
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`LOGME"%d CU_CLEAR_REGISTERS\n",$time);
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`endif
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oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
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oUCodeInstructioPointer <= `INITIAL_UCODE_ADDRESS;
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oGFUEnable <= 0;
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oUCodeEnable <= 1; //*
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oIOWritePixel <= 0;
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rResetHitFlop <= 0;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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NextState <= `CU_WAIT_CLEAR_REGISTERS;
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end
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//-----------------------------------------
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`CU_WAIT_CLEAR_REGISTERS:
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begin
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// `ifdef DEBUG
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// `LOGME"%d CU_WAIT_CLEAR_REGISTERS\n",$time);
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// `endif
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oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
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oUCodeInstructioPointer <= `INITIAL_UCODE_ADDRESS;
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oGFUEnable <= 0;
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oUCodeEnable <= 0;
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oIOWritePixel <= 0;
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rResetHitFlop <= 0;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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if ( iUCodeDone )
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NextState <= `CU_ACK_CLEAR_REGISTERS;
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else
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NextState <= `CU_WAIT_CLEAR_REGISTERS;
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end
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//-----------------------------------------
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`CU_ACK_CLEAR_REGISTERS:
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begin
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`ifdef DEBUG
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`LOGME"%d CU_ACK_CLEAR_REGISTERS\n", $time);
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`endif
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oRamBusOwner <= 0;
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oUCodeInstructioPointer <= 0;
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oGFUEnable <= 0;
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oUCodeEnable <= 0; //*
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oIOWritePixel <= 0;
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rResetHitFlop <= 0;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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NextState <= `CU_WAIT_FOR_CONFIG_DATA_READ;
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end
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//-----------------------------------------
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`CU_WAIT_FOR_CONFIG_DATA_READ:
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begin
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$display("CU_WAIT_FOR_CONFIG_DATA_READ");
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// `ifdef DEBUG
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// `LOGME"%d Control: CU_WAIT_FOR_CONFIG_DATA_READ\n",$time);
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// `endif
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oRamBusOwner <= 0;//`REG_BUS_OWNED_BY_BCU;
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oUCodeInstructioPointer <= 0;
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oGFUEnable <= 0;
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oUCodeEnable <= 0;
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oIOWritePixel <= 0;
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rResetHitFlop <= 0;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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if ( MST_I == 0 )
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NextState <= `CU_PRECALCULATE_CONSTANTS;
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else
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NextState <= `CU_WAIT_FOR_CONFIG_DATA_READ;
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end
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//-----------------------------------------
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`CU_PRECALCULATE_CONSTANTS:
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begin
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$display("CU_PRECALCULATE_CONSTANTS");
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`ifdef DEBUG
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`LOGME"%d Control: CU_PRECALCULATE_CONSTANTS\n", $time);
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`endif
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oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
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oUCodeInstructioPointer <= `CPPU_UCODE_ADDRESS;
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oGFUEnable <= 0;
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oUCodeEnable <= 1; //*
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oIOWritePixel <= 0;
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rResetHitFlop <= 0;
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rHitFlopEnable <= 0;
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oTriggerTFF <= 0;
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oSetCurrentPitch <= 0;
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//oIncCurrentPitch <= 0;
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NextState <= `CU_WAIT_FOR_CONSTANT;
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end
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//-----------------------------------------
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| 348 |
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`CU_WAIT_FOR_CONSTANT:
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begin
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// `ifdef DEBUG
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| 351 |
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// `LOGME"%d Control: CU_WAIT_FOR_CONSTANT\n", $time);
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| 352 |
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// `endif
|
| 353 |
|
|
|
| 354 |
|
|
|
| 355 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 356 |
|
|
oUCodeInstructioPointer <= `CPPU_UCODE_ADDRESS;
|
| 357 |
|
|
oGFUEnable <= 0;
|
| 358 |
|
|
oUCodeEnable <= 0; //*
|
| 359 |
|
|
oIOWritePixel <= 0;
|
| 360 |
|
|
rResetHitFlop <= 0;
|
| 361 |
|
|
rHitFlopEnable <= 0;
|
| 362 |
|
|
oTriggerTFF <= 0;
|
| 363 |
|
|
oSetCurrentPitch <= 0;
|
| 364 |
|
|
//oIncCurrentPitch <= 0;
|
| 365 |
|
|
|
| 366 |
|
|
if ( iUCodeDone )
|
| 367 |
|
|
NextState <= `CU_ACK_PRECALCULATE_CONSTANTS;
|
| 368 |
|
|
else
|
| 369 |
|
|
NextState <= `CU_WAIT_FOR_CONSTANT;
|
| 370 |
|
|
|
| 371 |
|
|
end
|
| 372 |
|
|
//-----------------------------------------
|
| 373 |
|
|
`CU_ACK_PRECALCULATE_CONSTANTS:
|
| 374 |
|
|
begin
|
| 375 |
|
|
$display("CU_ACK_PRECALCULATE_CONSTANTS");
|
| 376 |
|
|
`ifdef DEBUG
|
| 377 |
|
|
`LOGME"%d Control: CU_ACK_PRECALCULATE_CONSTANTS\n", $time);
|
| 378 |
|
|
`endif
|
| 379 |
|
|
|
| 380 |
|
|
|
| 381 |
|
|
oRamBusOwner <= 0;//`REG_BUS_OWNED_BY_BCU;
|
| 382 |
|
|
oUCodeInstructioPointer <= 0;
|
| 383 |
|
|
oGFUEnable <= 0;
|
| 384 |
|
|
oUCodeEnable <= 0; //*
|
| 385 |
|
|
oIOWritePixel <= 0;
|
| 386 |
|
|
rResetHitFlop <= 0;
|
| 387 |
|
|
rHitFlopEnable <= 0;
|
| 388 |
|
|
oTriggerTFF <= 0;
|
| 389 |
|
|
oSetCurrentPitch <= 0;
|
| 390 |
|
|
//oIncCurrentPitch <= 0;
|
| 391 |
|
|
|
| 392 |
|
|
NextState <= `CU_TRIGGER_RGU;//CU_WAIT_FOR_TASK;
|
| 393 |
|
|
|
| 394 |
|
|
end
|
| 395 |
|
|
//-----------------------------------------
|
| 396 |
|
|
`CU_TRIGGER_RGU:
|
| 397 |
|
|
begin
|
| 398 |
|
|
|
| 399 |
|
|
`ifdef DEBUG
|
| 400 |
|
|
`LOGME"%d Control: CU_TRIGGER_RGU\n",$time);
|
| 401 |
|
|
`endif
|
| 402 |
|
|
|
| 403 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 404 |
|
|
oUCodeInstructioPointer <= `RGU_UCODE_ADDRESS;
|
| 405 |
|
|
oGFUEnable <= 0;
|
| 406 |
|
|
oUCodeEnable <= 1; //*
|
| 407 |
|
|
oIOWritePixel <= 0;
|
| 408 |
|
|
rResetHitFlop <= 0;
|
| 409 |
|
|
rHitFlopEnable <= 0;
|
| 410 |
|
|
oTriggerTFF <= 0;
|
| 411 |
|
|
oSetCurrentPitch <= 0;
|
| 412 |
|
|
//oIncCurrentPitch <= 0;
|
| 413 |
|
|
|
| 414 |
|
|
NextState <= `CU_WAIT_FOR_RGU;
|
| 415 |
|
|
end
|
| 416 |
|
|
//-----------------------------------------
|
| 417 |
|
|
`CU_WAIT_FOR_RGU:
|
| 418 |
|
|
begin
|
| 419 |
|
|
|
| 420 |
|
|
// `ifdef DEBUG
|
| 421 |
|
|
// `LOGME"%d Control: CU_WAIT_FOR_RGU\n",$time);
|
| 422 |
|
|
// `endif
|
| 423 |
|
|
|
| 424 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 425 |
|
|
oUCodeInstructioPointer <= 0;
|
| 426 |
|
|
oGFUEnable <= 0;
|
| 427 |
|
|
oUCodeEnable <= 0;
|
| 428 |
|
|
oIOWritePixel <= 0;
|
| 429 |
|
|
rResetHitFlop <= 0;
|
| 430 |
|
|
rHitFlopEnable <= 0;
|
| 431 |
|
|
oTriggerTFF <= 0;
|
| 432 |
|
|
oSetCurrentPitch <= 0;
|
| 433 |
|
|
//oIncCurrentPitch <= 0;
|
| 434 |
|
|
|
| 435 |
|
|
if ( iUCodeDone )
|
| 436 |
|
|
NextState <= `CU_ACK_RGU;
|
| 437 |
|
|
else
|
| 438 |
|
|
NextState <= `CU_WAIT_FOR_RGU;
|
| 439 |
|
|
end
|
| 440 |
|
|
//-----------------------------------------
|
| 441 |
|
|
`CU_ACK_RGU:
|
| 442 |
|
|
begin
|
| 443 |
|
|
|
| 444 |
|
|
`ifdef DEBUG
|
| 445 |
|
|
`LOGME"%d Control: CU_ACK_RGU\n",$time);
|
| 446 |
|
|
`endif
|
| 447 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 448 |
|
|
oUCodeInstructioPointer <= 0;
|
| 449 |
|
|
oGFUEnable <= 0;
|
| 450 |
|
|
oUCodeEnable <= 0; //*
|
| 451 |
|
|
oIOWritePixel <= 0;
|
| 452 |
|
|
rResetHitFlop <= 0;
|
| 453 |
|
|
rHitFlopEnable <= 0;
|
| 454 |
|
|
oTriggerTFF <= 0;
|
| 455 |
|
|
oSetCurrentPitch <= 0;
|
| 456 |
|
|
//oIncCurrentPitch <= 0;
|
| 457 |
|
|
|
| 458 |
|
|
if ( iUCodeDone == 0)
|
| 459 |
|
|
NextState <= `CU_TRIGGER_GEO;
|
| 460 |
|
|
else
|
| 461 |
|
|
NextState <= `CU_ACK_RGU;
|
| 462 |
|
|
|
| 463 |
|
|
end
|
| 464 |
|
|
//-----------------------------------------
|
| 465 |
|
|
`CU_TRIGGER_GEO:
|
| 466 |
|
|
begin
|
| 467 |
|
|
|
| 468 |
|
|
`ifdef DEBUG
|
| 469 |
|
|
`LOGME"%d Control: CU_TRIGGER_GEO\n",$time);
|
| 470 |
|
|
`endif
|
| 471 |
|
|
|
| 472 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 473 |
|
|
oUCodeInstructioPointer <= 0;
|
| 474 |
|
|
oUCodeEnable <= 0;
|
| 475 |
|
|
oGFUEnable <= 1;
|
| 476 |
|
|
oIOWritePixel <= 0;
|
| 477 |
|
|
rResetHitFlop <= 1; //*
|
| 478 |
|
|
rHitFlopEnable <= 0;
|
| 479 |
|
|
oTriggerTFF <= 0;
|
| 480 |
|
|
oSetCurrentPitch <= 0;
|
| 481 |
|
|
//oIncCurrentPitch <= 0;
|
| 482 |
|
|
|
| 483 |
|
|
NextState <= `CU_WAIT_FOR_GEO_SYNC;
|
| 484 |
|
|
|
| 485 |
|
|
end
|
| 486 |
|
|
//-----------------------------------------
|
| 487 |
|
|
`CU_WAIT_FOR_GEO_SYNC:
|
| 488 |
|
|
begin
|
| 489 |
|
|
|
| 490 |
|
|
`ifdef DEBUG
|
| 491 |
|
|
`LOGME"%d Control: CU_WAIT_FOR_GEO_SYNC\n",$time);
|
| 492 |
|
|
`endif
|
| 493 |
|
|
|
| 494 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 495 |
|
|
oUCodeInstructioPointer <= 0;
|
| 496 |
|
|
oUCodeEnable <= 0;
|
| 497 |
|
|
oGFUEnable <= 0; //Change AUg 15
|
| 498 |
|
|
oIOWritePixel <= 0;
|
| 499 |
|
|
rResetHitFlop <= 0;
|
| 500 |
|
|
rHitFlopEnable <= 0;
|
| 501 |
|
|
oTriggerTFF <= 0;
|
| 502 |
|
|
oSetCurrentPitch <= 0;
|
| 503 |
|
|
//oIncCurrentPitch <= 0;
|
| 504 |
|
|
|
| 505 |
|
|
if (iGEOSync & iTriggerAABBIURequest )
|
| 506 |
|
|
NextState <= `CU_TRIGGER_AABBIU;
|
| 507 |
|
|
else if (iGEOSync & iTriggerBIURequest)
|
| 508 |
|
|
NextState <= `CU_TRIGGER_BIU;
|
| 509 |
|
|
else if (iGEOSync & iTriggertTCCRequest )
|
| 510 |
|
|
NextState <= `CU_TRIGGER_TCC;
|
| 511 |
|
|
else if (iGEOSync & iGFUDone )
|
| 512 |
|
|
NextState <= `CU_CHECK_HIT;
|
| 513 |
|
|
else
|
| 514 |
|
|
NextState <= `CU_WAIT_FOR_GEO_SYNC;
|
| 515 |
|
|
|
| 516 |
|
|
end
|
| 517 |
|
|
//-----------------------------------------
|
| 518 |
|
|
`CU_TRIGGER_TCC:
|
| 519 |
|
|
begin
|
| 520 |
|
|
//$display("CU_TRIGGER_TCC");
|
| 521 |
|
|
`ifdef DEBUG
|
| 522 |
|
|
`LOGME"%d Control: CU_TRIGGER_TCC\n",$time);
|
| 523 |
|
|
`endif
|
| 524 |
|
|
|
| 525 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 526 |
|
|
oUCodeInstructioPointer <= `TCC_UCODE_ADDRESS;
|
| 527 |
|
|
oUCodeEnable <= 1; //*
|
| 528 |
|
|
oGFUEnable <= 0;
|
| 529 |
|
|
oIOWritePixel <= 0;
|
| 530 |
|
|
rResetHitFlop <= 0;
|
| 531 |
|
|
rHitFlopEnable <= 0;
|
| 532 |
|
|
oTriggerTFF <= 0;
|
| 533 |
|
|
oSetCurrentPitch <= 0;
|
| 534 |
|
|
//oIncCurrentPitch <= 0;
|
| 535 |
|
|
|
| 536 |
|
|
NextState <= `WAIT_FOR_TCC;
|
| 537 |
|
|
end
|
| 538 |
|
|
//-----------------------------------------
|
| 539 |
|
|
`WAIT_FOR_TCC:
|
| 540 |
|
|
begin
|
| 541 |
|
|
|
| 542 |
|
|
//$display("WAIT_FOR_TCC");
|
| 543 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 544 |
|
|
oUCodeInstructioPointer <= `TCC_UCODE_ADDRESS;
|
| 545 |
|
|
oUCodeEnable <= 0; //*
|
| 546 |
|
|
oGFUEnable <= 0;
|
| 547 |
|
|
oIOWritePixel <= 0;
|
| 548 |
|
|
rResetHitFlop <= 0;
|
| 549 |
|
|
rHitFlopEnable <= 0;
|
| 550 |
|
|
oTriggerTFF <= 0;
|
| 551 |
|
|
oSetCurrentPitch <= 0;
|
| 552 |
|
|
//oIncCurrentPitch <= 0;
|
| 553 |
|
|
|
| 554 |
|
|
if ( iUCodeDone )
|
| 555 |
|
|
NextState <= `CU_ACK_UCODE;
|
| 556 |
|
|
else
|
| 557 |
|
|
NextState <= `WAIT_FOR_TCC;
|
| 558 |
|
|
|
| 559 |
|
|
end
|
| 560 |
|
|
//-----------------------------------------
|
| 561 |
|
|
/*
|
| 562 |
|
|
Was there any hit at all?
|
| 563 |
|
|
At this point, all the triangles in the list
|
| 564 |
|
|
have been traversed looking for a hit with our ray.
|
| 565 |
|
|
There are 3 possibilities:
|
| 566 |
|
|
1) The was not a single hit, then just paint a black
|
| 567 |
|
|
pixel on the screen and send it via PCU.
|
| 568 |
|
|
2)There was a hit and Texturing is not enabled, then trigger the PSU with
|
| 569 |
|
|
no texturing
|
| 570 |
|
|
2) There was a hit and Texturing is enabled, then fetch the texture
|
| 571 |
|
|
values corresponding to the triangle that we hitted.
|
| 572 |
|
|
*/
|
| 573 |
|
|
`CU_CHECK_HIT:
|
| 574 |
|
|
begin
|
| 575 |
|
|
|
| 576 |
|
|
`ifdef DEBUG
|
| 577 |
|
|
`LOGME"%d Control: CU_CHECK_HIT\n",$time);
|
| 578 |
|
|
`endif
|
| 579 |
|
|
|
| 580 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 581 |
|
|
oUCodeInstructioPointer <= 0;
|
| 582 |
|
|
oUCodeEnable <= 0;
|
| 583 |
|
|
oGFUEnable <= 0; ///CHANGED Aug 15
|
| 584 |
|
|
oIOWritePixel <= 0;
|
| 585 |
|
|
rResetHitFlop <= 0;
|
| 586 |
|
|
rHitFlopEnable <= 0;
|
| 587 |
|
|
oTriggerTFF <= 0;
|
| 588 |
|
|
oSetCurrentPitch <= 0;
|
| 589 |
|
|
//oIncCurrentPitch <= 0;
|
| 590 |
|
|
|
| 591 |
|
|
if (wHit && !iControlRegister[`CR_EN_TEXTURE] )
|
| 592 |
|
|
NextState <= `CU_TRIGGER_PSU;
|
| 593 |
|
|
else if (wHit && iControlRegister[`CR_EN_TEXTURE])
|
| 594 |
|
|
NextState <= `CU_TRIGGER_TFF; //Fetch the texture values from external RAM
|
| 595 |
|
|
else
|
| 596 |
|
|
NextState <= `CU_TRIGGER_PCU; //Make sure contents of the OUT_REG are ZERo!
|
| 597 |
|
|
end
|
| 598 |
|
|
//-----------------------------------------
|
| 599 |
|
|
/*
|
| 600 |
|
|
Get the texture values from external RAM.
|
| 601 |
|
|
GFU already took care of calculating the correct
|
| 602 |
|
|
texture addresses for the 4 coordinates so now lets
|
| 603 |
|
|
just ask for them.
|
| 604 |
|
|
*/
|
| 605 |
|
|
`CU_TRIGGER_TFF:
|
| 606 |
|
|
begin
|
| 607 |
|
|
`ifdef DEBUG
|
| 608 |
|
|
`LOGME"%d Control: CU_TRIGGER_TFF\n",$time);
|
| 609 |
|
|
`endif
|
| 610 |
|
|
|
| 611 |
|
|
//$display("CU_TRIGGER_TFF");
|
| 612 |
|
|
|
| 613 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 614 |
|
|
oUCodeInstructioPointer <= 0;
|
| 615 |
|
|
oUCodeEnable <= 0;
|
| 616 |
|
|
oGFUEnable <= 1;
|
| 617 |
|
|
oIOWritePixel <= 0;
|
| 618 |
|
|
rResetHitFlop <= 0;
|
| 619 |
|
|
rHitFlopEnable <= 0;
|
| 620 |
|
|
oTriggerTFF <= 1; //*
|
| 621 |
|
|
oSetCurrentPitch <= 0;
|
| 622 |
|
|
//oIncCurrentPitch <= 0;
|
| 623 |
|
|
|
| 624 |
|
|
NextState <= `CU_WAIT_FOR_TFF;
|
| 625 |
|
|
end
|
| 626 |
|
|
//-----------------------------------------
|
| 627 |
|
|
`CU_WAIT_FOR_TFF:
|
| 628 |
|
|
begin
|
| 629 |
|
|
|
| 630 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 631 |
|
|
oUCodeInstructioPointer <= 0;
|
| 632 |
|
|
oUCodeEnable <= 0;
|
| 633 |
|
|
oGFUEnable <= 0; //Changed Aug 14
|
| 634 |
|
|
oIOWritePixel <= 0;
|
| 635 |
|
|
rResetHitFlop <= 0;
|
| 636 |
|
|
rHitFlopEnable <= 0;
|
| 637 |
|
|
oTriggerTFF <= 0;
|
| 638 |
|
|
oSetCurrentPitch <= 0;
|
| 639 |
|
|
//oIncCurrentPitch <= 0;
|
| 640 |
|
|
|
| 641 |
|
|
if (iTFFDone)
|
| 642 |
|
|
NextState <= `CU_TRIGGER_PSU_WITH_TEXTURE;
|
| 643 |
|
|
else
|
| 644 |
|
|
NextState <= `CU_WAIT_FOR_TFF;
|
| 645 |
|
|
|
| 646 |
|
|
end
|
| 647 |
|
|
//-----------------------------------------
|
| 648 |
|
|
`CU_TRIGGER_PSU_WITH_TEXTURE:
|
| 649 |
|
|
begin
|
| 650 |
|
|
|
| 651 |
|
|
`ifdef DEBUG
|
| 652 |
|
|
`LOGME"%d Control: CU_TRIGGER_PSU_WITH_TEXTURE\n",$time);
|
| 653 |
|
|
`endif
|
| 654 |
|
|
|
| 655 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 656 |
|
|
oUCodeInstructioPointer <= `PSU_UCODE_ADRESS2;
|
| 657 |
|
|
oUCodeEnable <= 1;
|
| 658 |
|
|
oGFUEnable <= 0;
|
| 659 |
|
|
oIOWritePixel <= 0;
|
| 660 |
|
|
rResetHitFlop <= 0;
|
| 661 |
|
|
rHitFlopEnable <= 0;
|
| 662 |
|
|
oTriggerTFF <= 0;
|
| 663 |
|
|
oSetCurrentPitch <= 0;
|
| 664 |
|
|
//oIncCurrentPitch <= 0;
|
| 665 |
|
|
|
| 666 |
|
|
NextState <= `CU_WAIT_FOR_PSU;
|
| 667 |
|
|
end
|
| 668 |
|
|
//-----------------------------------------
|
| 669 |
|
|
`CU_TRIGGER_AABBIU:
|
| 670 |
|
|
begin
|
| 671 |
|
|
|
| 672 |
|
|
`ifdef DEBUG
|
| 673 |
|
|
`LOGME"%d Control: CU_TRIGGER_AABBIU\n",$time);
|
| 674 |
|
|
`endif
|
| 675 |
|
|
// $stop();
|
| 676 |
|
|
oRamBusOwner <= wAABBIUAddress;//`REG_BUS_OWNED_BY_UCODE;
|
| 677 |
|
|
|
| 678 |
|
|
oUCodeInstructioPointer <=`AABBIU_UCODE_ADDRESS;
|
| 679 |
|
|
oUCodeEnable <= 1;
|
| 680 |
|
|
oGFUEnable <= 1;
|
| 681 |
|
|
oIOWritePixel <= 0;
|
| 682 |
|
|
rResetHitFlop <= 0;
|
| 683 |
|
|
rHitFlopEnable <= 0;
|
| 684 |
|
|
oTriggerTFF <= 0;
|
| 685 |
|
|
oSetCurrentPitch <= 0;
|
| 686 |
|
|
//oIncCurrentPitch <= 0;
|
| 687 |
|
|
|
| 688 |
|
|
NextState <= `CU_WAIT_FOR_AABBIU;
|
| 689 |
|
|
end
|
| 690 |
|
|
//-----------------------------------------
|
| 691 |
|
|
`CU_WAIT_FOR_AABBIU:
|
| 692 |
|
|
begin
|
| 693 |
|
|
|
| 694 |
|
|
|
| 695 |
|
|
// `ifdef DEBUG
|
| 696 |
|
|
// `LOGME"%d Control: CU_WAIT_FOR_AABBIU\n",$time);
|
| 697 |
|
|
// `endif
|
| 698 |
|
|
|
| 699 |
|
|
|
| 700 |
|
|
// $display("iUCodeDone",iUCodeDone);
|
| 701 |
|
|
|
| 702 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 703 |
|
|
oUCodeInstructioPointer <= `AABBIU_UCODE_ADDRESS;
|
| 704 |
|
|
oUCodeEnable <= 0;
|
| 705 |
|
|
oGFUEnable <= 1;
|
| 706 |
|
|
oIOWritePixel <= 0;
|
| 707 |
|
|
rResetHitFlop <= 0;
|
| 708 |
|
|
rHitFlopEnable <= 0;
|
| 709 |
|
|
oTriggerTFF <= 0;
|
| 710 |
|
|
oSetCurrentPitch <= 0;
|
| 711 |
|
|
//oIncCurrentPitch <= 0;
|
| 712 |
|
|
|
| 713 |
|
|
if ( iUCodeDone )
|
| 714 |
|
|
begin
|
| 715 |
|
|
// $display("iUCodeDone\n",iUCodeDone);
|
| 716 |
|
|
// $stop();
|
| 717 |
|
|
NextState <= `CU_ACK_UCODE;
|
| 718 |
|
|
end
|
| 719 |
|
|
else
|
| 720 |
|
|
NextState <= `CU_WAIT_FOR_AABBIU;
|
| 721 |
|
|
end
|
| 722 |
|
|
//-----------------------------------------
|
| 723 |
|
|
`CU_TRIGGER_BIU:
|
| 724 |
|
|
begin
|
| 725 |
|
|
`ifdef DEBUG
|
| 726 |
|
|
`LOGME"%d Control: CU_TRIGGER_BIU\n",$time);
|
| 727 |
|
|
`endif
|
| 728 |
|
|
|
| 729 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 730 |
|
|
oUCodeInstructioPointer <= `BIU_UCODE_ADDRESS;
|
| 731 |
|
|
oUCodeEnable <= 1;
|
| 732 |
|
|
oGFUEnable <= 1;
|
| 733 |
|
|
oIOWritePixel <= 0;
|
| 734 |
|
|
rResetHitFlop <= 0;//1;
|
| 735 |
|
|
rHitFlopEnable <= 1;
|
| 736 |
|
|
oTriggerTFF <= 0;
|
| 737 |
|
|
oSetCurrentPitch <= 0;
|
| 738 |
|
|
//oIncCurrentPitch <= 0;
|
| 739 |
|
|
// $stop();
|
| 740 |
|
|
|
| 741 |
|
|
NextState <= `CU_WAIT_FOR_BIU;
|
| 742 |
|
|
|
| 743 |
|
|
end
|
| 744 |
|
|
//-----------------------------------------
|
| 745 |
|
|
`CU_WAIT_FOR_BIU:
|
| 746 |
|
|
begin
|
| 747 |
|
|
// `ifdef DEBUG
|
| 748 |
|
|
// `LOGME"%d Control: CU_WAIT_FOR_BIU\n",$time);
|
| 749 |
|
|
// `endif
|
| 750 |
|
|
|
| 751 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 752 |
|
|
oUCodeInstructioPointer <= `BIU_UCODE_ADDRESS;
|
| 753 |
|
|
oUCodeEnable <= 0;
|
| 754 |
|
|
oGFUEnable <= 1;
|
| 755 |
|
|
oIOWritePixel <= 0;
|
| 756 |
|
|
rResetHitFlop <= 0;
|
| 757 |
|
|
rHitFlopEnable <= 1;
|
| 758 |
|
|
oTriggerTFF <= 0;
|
| 759 |
|
|
oSetCurrentPitch <= 0;
|
| 760 |
|
|
//oIncCurrentPitch <= 0;
|
| 761 |
|
|
|
| 762 |
|
|
if ( iUCodeDone )
|
| 763 |
|
|
NextState <= `CU_ACK_UCODE;
|
| 764 |
|
|
else
|
| 765 |
|
|
NextState <= `CU_WAIT_FOR_BIU;
|
| 766 |
|
|
end
|
| 767 |
|
|
//-----------------------------------------
|
| 768 |
|
|
/*
|
| 769 |
|
|
ACK UCODE by setting oUCodeEnable = 0
|
| 770 |
|
|
*/
|
| 771 |
|
|
`CU_ACK_UCODE:
|
| 772 |
|
|
begin
|
| 773 |
|
|
`ifdef DEBUG
|
| 774 |
|
|
`LOGME"%d Control: CU_ACK_UCODE\n",$time);
|
| 775 |
|
|
`endif
|
| 776 |
|
|
|
| 777 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 778 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 779 |
|
|
oUCodeEnable <= 0; //*
|
| 780 |
|
|
oGFUEnable <= 0; //Changed Aug 15
|
| 781 |
|
|
oIOWritePixel <= 0;
|
| 782 |
|
|
rResetHitFlop <= 0;
|
| 783 |
|
|
rHitFlopEnable <= 0;
|
| 784 |
|
|
oTriggerTFF <= 0;
|
| 785 |
|
|
oSetCurrentPitch <= 0;
|
| 786 |
|
|
//oIncCurrentPitch <= 0;
|
| 787 |
|
|
|
| 788 |
|
|
// $stop();
|
| 789 |
|
|
|
| 790 |
|
|
if ( iUCodeDone == 0 )
|
| 791 |
|
|
NextState <= `CU_WAIT_FOR_GEO_SYNC;
|
| 792 |
|
|
else
|
| 793 |
|
|
NextState <= `CU_ACK_UCODE;
|
| 794 |
|
|
end
|
| 795 |
|
|
//-----------------------------------------
|
| 796 |
|
|
/*
|
| 797 |
|
|
Here we no longer use GFU so set Enable to zero
|
| 798 |
|
|
*/
|
| 799 |
|
|
`CU_TRIGGER_PSU:
|
| 800 |
|
|
begin
|
| 801 |
|
|
`ifdef DEBUG
|
| 802 |
|
|
`LOGME"%d Control: CU_TRIGGER_PSU\n",$time);
|
| 803 |
|
|
`endif
|
| 804 |
|
|
|
| 805 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 806 |
|
|
oUCodeInstructioPointer <= `PSU_UCODE_ADRESS;
|
| 807 |
|
|
oUCodeEnable <= 1;
|
| 808 |
|
|
oGFUEnable <= 0;//*
|
| 809 |
|
|
oIOWritePixel <= 0;
|
| 810 |
|
|
rResetHitFlop <= 0;
|
| 811 |
|
|
rHitFlopEnable <= 0;
|
| 812 |
|
|
oTriggerTFF <= 0;
|
| 813 |
|
|
oSetCurrentPitch <= 0;
|
| 814 |
|
|
//oIncCurrentPitch <= 0;
|
| 815 |
|
|
|
| 816 |
|
|
|
| 817 |
|
|
NextState <= `CU_WAIT_FOR_PSU;
|
| 818 |
|
|
end
|
| 819 |
|
|
//-----------------------------------------
|
| 820 |
|
|
`CU_WAIT_FOR_PSU:
|
| 821 |
|
|
begin
|
| 822 |
|
|
|
| 823 |
|
|
// `ifdef DEBUG
|
| 824 |
|
|
// `LOGME"%d Control: CU_TRIGGER_PSU\n",$time);
|
| 825 |
|
|
// `endif
|
| 826 |
|
|
|
| 827 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 828 |
|
|
oUCodeInstructioPointer <= `PSU_UCODE_ADRESS;
|
| 829 |
|
|
oUCodeEnable <= 0;
|
| 830 |
|
|
oGFUEnable <= 0;
|
| 831 |
|
|
oIOWritePixel <= 0;
|
| 832 |
|
|
rResetHitFlop <= 0;
|
| 833 |
|
|
rHitFlopEnable <= 0;
|
| 834 |
|
|
oTriggerTFF <= 0;
|
| 835 |
|
|
oSetCurrentPitch <= 0;
|
| 836 |
|
|
//oIncCurrentPitch <= 0;
|
| 837 |
|
|
|
| 838 |
|
|
|
| 839 |
|
|
if ( iUCodeDone )
|
| 840 |
|
|
NextState <= `CU_ACK_PSU;
|
| 841 |
|
|
else
|
| 842 |
|
|
NextState <= `CU_WAIT_FOR_PSU;
|
| 843 |
|
|
|
| 844 |
|
|
end
|
| 845 |
|
|
//-----------------------------------------
|
| 846 |
|
|
`CU_ACK_PSU:
|
| 847 |
|
|
begin
|
| 848 |
|
|
`ifdef DEBUG
|
| 849 |
|
|
`LOGME"%d Control: CU_ACK_PSU\n",$time);
|
| 850 |
|
|
`endif
|
| 851 |
|
|
|
| 852 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 853 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 854 |
|
|
oUCodeEnable <= 0; //*
|
| 855 |
|
|
oGFUEnable <= 0;
|
| 856 |
|
|
oIOWritePixel <= 0;
|
| 857 |
|
|
rResetHitFlop <= 0;
|
| 858 |
|
|
rHitFlopEnable <= 0;
|
| 859 |
|
|
oTriggerTFF <= 0;
|
| 860 |
|
|
oSetCurrentPitch <= 0;
|
| 861 |
|
|
//oIncCurrentPitch <= 0;
|
| 862 |
|
|
|
| 863 |
|
|
if ( iUCodeDone == 0)
|
| 864 |
|
|
NextState <= `CU_TRIGGER_PCU;
|
| 865 |
|
|
else
|
| 866 |
|
|
NextState <= `CU_ACK_PSU;
|
| 867 |
|
|
|
| 868 |
|
|
|
| 869 |
|
|
end
|
| 870 |
|
|
//-----------------------------------------
|
| 871 |
|
|
/*
|
| 872 |
|
|
Trigger the Pixel Commit.
|
| 873 |
|
|
*/
|
| 874 |
|
|
`CU_TRIGGER_PCU:
|
| 875 |
|
|
begin
|
| 876 |
|
|
|
| 877 |
|
|
`ifdef DEBUG
|
| 878 |
|
|
`LOGME"%d Control: CU_TRIGGER_PCU\n",$time);
|
| 879 |
|
|
`endif
|
| 880 |
|
|
|
| 881 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 882 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 883 |
|
|
oUCodeEnable <= 0; //*
|
| 884 |
|
|
oGFUEnable <= 0;
|
| 885 |
|
|
oIOWritePixel <= 1; //*
|
| 886 |
|
|
rResetHitFlop <= 0;
|
| 887 |
|
|
rHitFlopEnable <= 0;
|
| 888 |
|
|
oTriggerTFF <= 0;
|
| 889 |
|
|
oSetCurrentPitch <= 0;
|
| 890 |
|
|
//oIncCurrentPitch <= 0;
|
| 891 |
|
|
|
| 892 |
|
|
|
| 893 |
|
|
NextState <= `CU_SET_PICTH;
|
| 894 |
|
|
|
| 895 |
|
|
end
|
| 896 |
|
|
//-----------------------------------------
|
| 897 |
|
|
`CU_SET_PICTH:
|
| 898 |
|
|
begin
|
| 899 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 900 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 901 |
|
|
oUCodeEnable <= 0; //*
|
| 902 |
|
|
oGFUEnable <= 0;
|
| 903 |
|
|
oIOWritePixel <= 1; //*
|
| 904 |
|
|
rResetHitFlop <= 0;
|
| 905 |
|
|
rHitFlopEnable <= 0;
|
| 906 |
|
|
oTriggerTFF <= 0;
|
| 907 |
|
|
oSetCurrentPitch <= 1; //*
|
| 908 |
|
|
//oIncCurrentPitch <= 0;
|
| 909 |
|
|
|
| 910 |
|
|
|
| 911 |
|
|
NextState <= `CU_WAIT_FOR_PCU;
|
| 912 |
|
|
end
|
| 913 |
|
|
//-----------------------------------------
|
| 914 |
|
|
`CU_WAIT_FOR_PCU:
|
| 915 |
|
|
begin
|
| 916 |
|
|
|
| 917 |
|
|
// `ifdef DEBUG
|
| 918 |
|
|
// `LOGME"%d Control: CU_WAIT_FOR_PCU\n",$time);
|
| 919 |
|
|
// `endif
|
| 920 |
|
|
|
| 921 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 922 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 923 |
|
|
oUCodeEnable <= 0; //*
|
| 924 |
|
|
oGFUEnable <= 0;
|
| 925 |
|
|
oIOWritePixel <= 1;
|
| 926 |
|
|
rResetHitFlop <= 0;
|
| 927 |
|
|
rHitFlopEnable <= 0;
|
| 928 |
|
|
oTriggerTFF <= 0;
|
| 929 |
|
|
oSetCurrentPitch <= 0;
|
| 930 |
|
|
//oIncCurrentPitch <= 0;
|
| 931 |
|
|
|
| 932 |
|
|
if ( iIODone )
|
| 933 |
|
|
NextState <= `CU_ACK_PCU;
|
| 934 |
|
|
else
|
| 935 |
|
|
NextState <= `CU_WAIT_FOR_PCU;
|
| 936 |
|
|
|
| 937 |
|
|
end
|
| 938 |
|
|
//-----------------------------------------
|
| 939 |
|
|
`CU_ACK_PCU:
|
| 940 |
|
|
begin
|
| 941 |
|
|
|
| 942 |
|
|
`ifdef DEBUG
|
| 943 |
|
|
`LOGME"%d Control: CU_ACK_PCU\n",$time);
|
| 944 |
|
|
`endif
|
| 945 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_GFU;
|
| 946 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 947 |
|
|
oUCodeEnable <= 0; //*
|
| 948 |
|
|
oGFUEnable <= 0;
|
| 949 |
|
|
oIOWritePixel <= 0;
|
| 950 |
|
|
rResetHitFlop <= 0;
|
| 951 |
|
|
rHitFlopEnable <= 0;
|
| 952 |
|
|
oTriggerTFF <= 0;
|
| 953 |
|
|
oSetCurrentPitch <= 0;
|
| 954 |
|
|
//oIncCurrentPitch <= 0;
|
| 955 |
|
|
|
| 956 |
|
|
NextState <= `CU_TRIGGER_NPU;
|
| 957 |
|
|
|
| 958 |
|
|
end
|
| 959 |
|
|
//-----------------------------------------
|
| 960 |
|
|
`CU_TRIGGER_NPU: //Next Pixel Unit
|
| 961 |
|
|
begin
|
| 962 |
|
|
`ifdef DEBUG
|
| 963 |
|
|
`LOGME"%d Control: CU_TRIGGER_NPU\n",$time);
|
| 964 |
|
|
`endif
|
| 965 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 966 |
|
|
oUCodeInstructioPointer <= `NPG_UCODE_ADDRESS; //*
|
| 967 |
|
|
oUCodeEnable <= 1; //*
|
| 968 |
|
|
oGFUEnable <= 0;
|
| 969 |
|
|
oIOWritePixel <= 0;
|
| 970 |
|
|
rResetHitFlop <= 0;
|
| 971 |
|
|
rHitFlopEnable <= 0;
|
| 972 |
|
|
oTriggerTFF <= 0;
|
| 973 |
|
|
oSetCurrentPitch <= 0;
|
| 974 |
|
|
//oIncCurrentPitch <= 0;
|
| 975 |
|
|
|
| 976 |
|
|
NextState <= `CU_WAIT_NPU;
|
| 977 |
|
|
end
|
| 978 |
|
|
//-----------------------------------------
|
| 979 |
|
|
`CU_WAIT_NPU:
|
| 980 |
|
|
begin
|
| 981 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 982 |
|
|
oUCodeInstructioPointer <= `NPG_UCODE_ADDRESS;
|
| 983 |
|
|
oUCodeEnable <= 0;
|
| 984 |
|
|
oGFUEnable <= 0;
|
| 985 |
|
|
oIOWritePixel <= 0;
|
| 986 |
|
|
rResetHitFlop <= 0;
|
| 987 |
|
|
rHitFlopEnable <= 0;
|
| 988 |
|
|
oTriggerTFF <= 0;
|
| 989 |
|
|
oSetCurrentPitch <= 0;
|
| 990 |
|
|
//oIncCurrentPitch <= 0;
|
| 991 |
|
|
|
| 992 |
|
|
if ( iUCodeDone )
|
| 993 |
|
|
NextState <= `CU_ACK_NPU;
|
| 994 |
|
|
else
|
| 995 |
|
|
NextState <= `CU_WAIT_NPU;
|
| 996 |
|
|
end
|
| 997 |
|
|
//-----------------------------------------
|
| 998 |
|
|
`CU_ACK_NPU:
|
| 999 |
|
|
begin
|
| 1000 |
|
|
`ifdef DEBUG
|
| 1001 |
|
|
`LOGME"%d Control: CU_ACK_PSU\n",$time);
|
| 1002 |
|
|
`endif
|
| 1003 |
|
|
|
| 1004 |
|
|
oRamBusOwner <= `REG_BUS_OWNED_BY_UCODE;
|
| 1005 |
|
|
oUCodeInstructioPointer <= 0; //*
|
| 1006 |
|
|
oUCodeEnable <= 0; //*
|
| 1007 |
|
|
oGFUEnable <= 0;
|
| 1008 |
|
|
oIOWritePixel <= 0;
|
| 1009 |
|
|
rResetHitFlop <= 0;
|
| 1010 |
|
|
rHitFlopEnable <= 0;
|
| 1011 |
|
|
oTriggerTFF <= 0;
|
| 1012 |
|
|
oSetCurrentPitch <= 0;
|
| 1013 |
|
|
//oIncCurrentPitch <= 0;
|
| 1014 |
|
|
|
| 1015 |
|
|
if ( iUCodeDone == 0)
|
| 1016 |
|
|
NextState <= `CU_TRIGGER_RGU;
|
| 1017 |
|
|
else
|
| 1018 |
|
|
NextState <= `CU_ACK_NPU;
|
| 1019 |
|
|
|
| 1020 |
|
|
|
| 1021 |
|
|
end
|
| 1022 |
|
|
//-----------------------------------------
|
| 1023 |
|
|
default:
|
| 1024 |
|
|
begin
|
| 1025 |
|
|
|
| 1026 |
|
|
`ifdef DEBUG
|
| 1027 |
|
|
`LOGME"%d Control: ERRO Undefined State\n",$time);
|
| 1028 |
|
|
`endif
|
| 1029 |
|
|
|
| 1030 |
|
|
oRamBusOwner <= 0;
|
| 1031 |
|
|
oUCodeInstructioPointer <= 0;
|
| 1032 |
|
|
oUCodeEnable <= 0;
|
| 1033 |
|
|
oGFUEnable <= 0;
|
| 1034 |
|
|
oIOWritePixel <= 0;
|
| 1035 |
|
|
rResetHitFlop <= 0;
|
| 1036 |
|
|
rHitFlopEnable <= 0;
|
| 1037 |
|
|
oTriggerTFF <= 0;
|
| 1038 |
|
|
oSetCurrentPitch <= 0;
|
| 1039 |
|
|
//oIncCurrentPitch <= 0;
|
| 1040 |
|
|
|
| 1041 |
|
|
NextState <= `CU_AFTER_RESET_STATE;
|
| 1042 |
|
|
end
|
| 1043 |
|
|
//-----------------------------------------
|
| 1044 |
|
|
|
| 1045 |
|
|
endcase
|
| 1046 |
|
|
|
| 1047 |
|
|
end //always
|
| 1048 |
|
|
endmodule
|
