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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries.
All rights reserved.
This file is part of the Palm OS Emulator.
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.
\* ===================================================================== */
#include "EmCommon.h"
#include "EmRegs328Symbol1700.h"
#include "EmRegs328Prv.h"
#define keyBitTrigLeft 0x0400
#define keyBitTrigCenter 0x0800
#define keyBitTrigRight 0x1000
#define keyBitPageUpLeft keyBitPageUp
#define keyBitPageUpRight keyBitPageDown
#define keyBitPageDownLeft 0x2000
#define keyBitPageDownRight 0x4000
#define keyBitMask 0x0F // Which bits in port D we use for keys
#define portDKbdCols 0xF0
#define portDKbdRows 0x0F
#define portDKbdCol0 0x10
#define portDKbdCol1 0x20
#define portDKbdCol2 0x40
#define portDKbdCol3 0x80
#define portDKbdRow0 0x01
#define portDKbdRow1 0x02
#define portDKbdRow2 0x04
#define portDKbdRow3 0x08
const int kNumButtonRows = 4;
const int kNumButtonCols = 4;
const uint16 kButtonMap[kNumButtonRows][kNumButtonCols] =
{
{ keyBitPower, keyBitTrigLeft, keyBitTrigCenter, keyBitTrigRight },
{ keyBitHard1, keyBitHard2, keyBitHard3, keyBitHard4 },
{ keyBitPageUpLeft, keyBitPageUpRight, keyBitPageDownLeft, keyBitPageDownRight },
{ keyBitContrast, 0, 0, 0 }
};
// ---------------------------------------------------------------------------
// ¥ EmRegs328Symbol1700::GetKeyBits
// ---------------------------------------------------------------------------
uint8 EmRegs328Symbol1700::GetKeyBits (void)
{
uint8 portDData = READ_REGISTER (portDData);
Bool cols[4];
cols[0] = (portDData & portDKbdCol0) == 0;
cols[1] = (portDData & portDKbdCol1) == 0;
cols[2] = (portDData & portDKbdCol2) == 0;
cols[3] = (portDData & portDKbdCol3) == 0;
uint8 keyData = 0;
// Walk the columns, looking for one that is requested.
for (int col = 0; col < kNumButtonCols; ++col)
{
if (cols[col])
{
// Walk the rows.
for (int row = 0; row < kNumButtonRows; ++row)
{
// Get the key corresponding to this row and column.
// If we've recorded (in fgKeyBits) that this key is
// pressed, then set its row bit.
if ((fKeyBits & kButtonMap[row][col]) != 0)
{
keyData |= 1 << (col + 4);
keyData |= 1 << row;
}
}
}
}
return keyData;
}
// ---------------------------------------------------------------------------
// ¥ EmRegs328Symbol1700::ButtonToBits
// ---------------------------------------------------------------------------
uint16 EmRegs328Symbol1700::ButtonToBits (SkinElementType button)
{
uint16 bitNumber = 0;
switch (button)
{
default:
bitNumber = EmRegs328PalmPilot::ButtonToBits (button);
break;
case kElement_TriggerLeft: bitNumber = keyBitTrigLeft; break;
case kElement_TriggerCenter: bitNumber = keyBitTrigCenter; break;
case kElement_TriggerRight: bitNumber = keyBitTrigRight; break;
case kElement_UpButtonLeft: bitNumber = keyBitPageUpLeft; break;
case kElement_UpButtonRight: bitNumber = keyBitPageUpRight; break;
case kElement_DownButtonLeft: bitNumber = keyBitPageDownLeft; break;
case kElement_DownButtonRight: bitNumber = keyBitPageDownRight; break;
}
return bitNumber;
}
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