132 lines
3.3 KiB
C++
132 lines
3.3 KiB
C++
/******************************************************************************/
|
|
/* Mednafen Sega Saturn Emulation Module */
|
|
/******************************************************************************/
|
|
/* 3dpad.cpp:
|
|
** Copyright (C) 2016-2017 Mednafen Team
|
|
**
|
|
** This program is free software; you can redistribute it and/or
|
|
** modify it under the terms of the GNU General Public License
|
|
** as published by the Free Software Foundation; either version 2
|
|
** of the License, or (at your option) any later version.
|
|
**
|
|
** This program is distributed in the hope that it will be useful,
|
|
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
** GNU General Public License for more details.
|
|
**
|
|
** You should have received a copy of the GNU General Public License
|
|
** along with this program; if not, write to the Free Software Foundation, Inc.,
|
|
** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include "3dpad.h"
|
|
|
|
namespace MDFN_IEN_SS
|
|
{
|
|
|
|
IODevice_3DPad::IODevice_3DPad() : dbuttons(0), mode(false)
|
|
{
|
|
|
|
}
|
|
|
|
IODevice_3DPad::~IODevice_3DPad()
|
|
{
|
|
|
|
}
|
|
|
|
void IODevice_3DPad::Power(void)
|
|
{
|
|
phase = -1;
|
|
tl = true;
|
|
data_out = 0x01;
|
|
}
|
|
|
|
void IODevice_3DPad::UpdateInput(const uint8 *data, const int32 time_elapsed)
|
|
{
|
|
const uint16 dtmp = MDFN_de16lsb(&data[0]);
|
|
|
|
dbuttons = (dbuttons & 0x8800) | (dtmp & 0x0FFF);
|
|
mode = (bool)(dtmp & 0x1000);
|
|
|
|
thumb[0] = data[2];
|
|
thumb[1] = data[3];
|
|
shoulder[0] = data[4];
|
|
shoulder[1] = data[5];
|
|
|
|
for (unsigned w = 0; w < 2; w++)
|
|
{
|
|
// May not be right for digital mode, but shouldn't matter too much:
|
|
if (shoulder[w] <= 0x55)
|
|
dbuttons &= ~(0x0800 << (w << 2));
|
|
else if (shoulder[w] >= 0x8E)
|
|
dbuttons |= 0x0800 << (w << 2);
|
|
}
|
|
}
|
|
|
|
uint8 IODevice_3DPad::UpdateBus(const uint8 smpc_out, const uint8 smpc_out_asserted)
|
|
{
|
|
uint8 tmp;
|
|
|
|
if(smpc_out & 0x40)
|
|
{
|
|
phase = -1;
|
|
tl = true;
|
|
data_out = 0x01;
|
|
}
|
|
else
|
|
{
|
|
if((bool)(smpc_out & 0x20) != tl)
|
|
{
|
|
if(phase < 15)
|
|
{
|
|
tl = !tl;
|
|
phase++;
|
|
}
|
|
|
|
if(!phase)
|
|
{
|
|
if(mode)
|
|
{
|
|
buffer[ 0] = 0x1;
|
|
buffer[ 1] = 0x6;
|
|
buffer[ 2] = (((dbuttons >> 0) & 0xF) ^ 0xF);
|
|
buffer[ 3] = (((dbuttons >> 4) & 0xF) ^ 0xF);
|
|
buffer[ 4] = (((dbuttons >> 8) & 0xF) ^ 0xF);
|
|
buffer[ 5] = (((dbuttons >> 12) & 0xF) ^ 0xF);
|
|
buffer[ 6] = (thumb[0] >> 4) & 0xF;
|
|
buffer[ 7] = (thumb[0] >> 0) & 0xF;
|
|
buffer[ 8] = (thumb[1] >> 4) & 0xF;
|
|
buffer[ 9] = (thumb[1] >> 0) & 0xF;
|
|
buffer[10] = (shoulder[0] >> 4) & 0xF;
|
|
buffer[11] = (shoulder[0] >> 0) & 0xF;
|
|
buffer[12] = (shoulder[1] >> 4) & 0xF;
|
|
buffer[13] = (shoulder[1] >> 0) & 0xF;
|
|
buffer[14] = 0x0;
|
|
buffer[15] = 0x1;
|
|
}
|
|
else
|
|
{
|
|
phase = 8;
|
|
buffer[ 8] = 0x0;
|
|
buffer[ 9] = 0x2;
|
|
buffer[10] = (((dbuttons >> 0) & 0xF) ^ 0xF);
|
|
buffer[11] = (((dbuttons >> 4) & 0xF) ^ 0xF);
|
|
buffer[12] = (((dbuttons >> 8) & 0xF) ^ 0xF);
|
|
buffer[13] = (((dbuttons >> 12) & 0xF) ^ 0xF);
|
|
buffer[14] = 0x0;
|
|
buffer[15] = 0x1;
|
|
}
|
|
}
|
|
|
|
data_out = buffer[phase];
|
|
}
|
|
}
|
|
|
|
tmp = (tl << 4) | data_out;
|
|
|
|
return (smpc_out & (smpc_out_asserted | 0xE0)) | (tmp &~ smpc_out_asserted);
|
|
}
|
|
|
|
}
|