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Viewing changes to src/mame/machine/scudsp.c

  • Committer: Package Import Robot
  • Author(s): Cesare Falco
  • Date: 2011-11-30 18:50:10 UTC
  • mfrom: (1.1.4)
  • Revision ID: package-import@ubuntu.com-20111130185010-02hcxybht1mn082w
Tags: 0.144-0ubuntu1
https://launchpad.net/bugs/913550
* New upstream release (LP: #913550)
* mame.install:
  - Added artwork/ images to be used with -effect switch
  - Be more selective with hash/ contents
* contrib/mame.ini: added /usr/share/games/mame/artwork/ to artpath

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src/mame/machine/scudsp.c
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/******************************************************************************************
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System Control Unit - DSP emulator version 0.06
 
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System Control Unit - DSP emulator version 0.09
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Written by Angelo Salese & Mariusz Wojcieszek
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Changelog:
 
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110807: Angelo Salese
 
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- Allow the Program Counter to be read-backable from SH-2, needed by Virtua Fighter to not
 
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  get stuck on "round 1" announcement;
 
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110806: Angelo Salese
 
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- Allows reading from non-work ram h areas;
 
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- Fixed DMA add values;
 
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- Fixed a MVI condition shift flag bug, now Sega Saturn produces sound during splash screen;
 
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- Removed left-over IRQ;
 
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110722: Angelo Salese
 
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- Added DSP IRQ command, tested with "The King of Boxing"
 
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110527: Angelo Salese
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- Fixed incorrectly setted execute flag clearance, allows animation of the Sega Saturn
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  splash screen;
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        return 0;
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}
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void dsp_prg_ctrl(address_space *space, UINT32 data)
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{
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        saturn_state *state = space->machine().driver_data<saturn_state>();
 
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UINT32 dsp_prg_ctrl_r(address_space *space)
 
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{
 
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        saturn_state *state = space->machine().driver_data<saturn_state>();
 
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        return (state->m_scu_regs[0x80/4] & 0x06ff8000) | (dsp_reg.pc & 0xff);
 
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}
 
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void dsp_prg_ctrl_w(address_space *space, UINT32 data)
 
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{
 
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        saturn_state *state = space->machine().driver_data<saturn_state>();
 
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        if(LEF) dsp_reg.pc = (data & 0xff);
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        if(EXF) dsp_execute_program(space);
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        if(EF && (!(state->m_scu_regs[40] & 0x0020)))
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                cputag_set_input_line_and_vector(space->machine(), "maincpu", 0xa, HOLD_LINE , 0x45);
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}
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void dsp_prg_data(UINT32 data)
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        if ( opcode & 0x2000000 )
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        {
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                if ( dsp_compute_condition( space, (opcode & 0x3F80000 ) >> 18 ) )
 
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                if ( dsp_compute_condition( space, (opcode & 0x3F80000 ) >> 19 ) )
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                {
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                        value = opcode & 0x7ffff;
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                        if ( value & 0x40000 ) value |= 0xfff80000;
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        UINT32 dir_from_D0 = (opcode & 0x1000 ) >> 12;
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        UINT32 transfer_cnt = 0;
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        UINT32 source = 0, dest = 0;
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        UINT32 dsp_mem = (opcode & 0x700) >> 8;
 
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        UINT32 dsp_mem = (opcode & 0x300) >> 8;
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        UINT32 counter = 0;
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        UINT32 data;
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        if ( opcode & 0x2000 )
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        {
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                transfer_cnt = dsp_get_source_mem_value( opcode & 0xf );
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                switch ( add & 0x1 )
 
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                switch ( add & 0x7 )
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                {
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                  case 0: add = 2; break;
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                  case 1: add = 4; break;
 
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                        case 0: add = 0; break;
 
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                        case 1: add = 4; break;
 
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                        default: add = 4; break;
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                }
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        }
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        else
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                        }
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                        else
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                        {
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                                data = 0;
 
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                                data = (space->read_word(source)<<16) | space->read_word(source+2);
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                                //popmessage( "Bad DSP DMA mem read = %08X", source );
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#if DEBUG_DSP
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                                fprintf( log_file, "/*Bad DSP DMA mem read = %08X*/\n", source );
 
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                                //fprintf( log_file, "/*Bad DSP DMA mem read = %08X*/\n", source );
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#endif
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                        }
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#if DEBUG_DSP
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            fprintf( log_file, "%08X,\n", data );
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#endif
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                        dsp_set_dest_dma_mem( dsp_mem, data, counter );
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                        source += add;
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                }
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                }
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        }
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        /* TODO: move this behind a timer */
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        T0F_0;
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}
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        }
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}
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static TIMER_CALLBACK( dsp_ended )
 
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{
 
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        saturn_state *state = machine.driver_data<saturn_state>();
 
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        if(!(state->m_scu.ism & IRQ_DSP_END))
 
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                device_set_input_line_and_vector(state->m_maincpu, 0xa, HOLD_LINE, 0x45);
 
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        else
 
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                state->m_scu.ist |= (IRQ_DSP_END);
 
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        EF_1;
 
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}
 
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static void dsp_end( address_space *dmaspace )
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{
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        saturn_state *state = dmaspace->machine().driver_data<saturn_state>();
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        if(opcode & 0x08000000)
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        {
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                /*ENDI*/
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                EF_1;
 
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                dmaspace->machine().scheduler().timer_set(attotime::from_usec(300), FUNC(dsp_ended));
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        }
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        EXF_0; /* END / ENDI */
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        {
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                data[0] = op & 0x7FFFF;
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                data[1] = (op & 0x3C000000) >> 26;
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                data[2] = (op & 0x3F80000 ) >> 18;
 
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                data[2] = (op & 0x3F80000 ) >> 19;
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                dsp_dasm_prefix( MVI_Command[1], buffer, data ); /* TODO: bad mem*/
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        }
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        else