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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#include "emu.h"
#include "wpc_shift.h"
DEFINE_DEVICE_TYPE(WPC_SHIFT, wpc_shift_device, "wpc_shift", "Windows Pinball Controller Shifter")
wpc_shift_device::wpc_shift_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, WPC_SHIFT, tag, owner, clock)
{
}
wpc_shift_device::~wpc_shift_device()
{
}
DEVICE_ADDRESS_MAP_START( registers, 8, wpc_shift_device )
AM_RANGE(0, 0) AM_READWRITE(adrh_r, adrh_w)
AM_RANGE(1, 1) AM_READWRITE(adrl_r, adrl_w)
AM_RANGE(2, 2) AM_READWRITE(val1_r, val1_w)
AM_RANGE(3, 3) AM_READWRITE(val2_r, val2_w)
ADDRESS_MAP_END
READ8_MEMBER(wpc_shift_device::adrh_r)
{
return (adr + (val1 >> 3)) >> 8;
}
WRITE8_MEMBER(wpc_shift_device::adrh_w)
{
adr = (adr & 0xff) | (data << 8);
}
READ8_MEMBER(wpc_shift_device::adrl_r)
{
return adr + (val1 >> 3);
}
WRITE8_MEMBER(wpc_shift_device::adrl_w)
{
adr = (adr & 0xff00) | data;
}
READ8_MEMBER(wpc_shift_device::val1_r)
{
return 1 << (val1 & 7);
}
WRITE8_MEMBER(wpc_shift_device::val1_w)
{
val1 = data;
}
READ8_MEMBER(wpc_shift_device::val2_r)
{
return 1 << (val2 & 7);
}
WRITE8_MEMBER(wpc_shift_device::val2_w)
{
val2 = data;
}
void wpc_shift_device::device_start()
{
save_item(NAME(adr));
save_item(NAME(val1));
save_item(NAME(val2));
}
void wpc_shift_device::device_reset()
{
adr = 0x0000;
val1 = 0x00;
val2 = 0x00;
}
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