diff options
Diffstat (limited to 'src/devices/bus/spectrum/fuller.cpp')
-rw-r--r-- | src/devices/bus/spectrum/fuller.cpp | 65 |
1 files changed, 38 insertions, 27 deletions
diff --git a/src/devices/bus/spectrum/fuller.cpp b/src/devices/bus/spectrum/fuller.cpp index 36275ccc4cd..636967cbdd6 100644 --- a/src/devices/bus/spectrum/fuller.cpp +++ b/src/devices/bus/spectrum/fuller.cpp @@ -84,51 +84,62 @@ void spectrum_fuller_device::device_start() } -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void spectrum_fuller_device::device_reset() -{ - m_exp->set_io_space(&io_space()); - - io_space().install_write_handler(0x3f, 0x3f, 0, 0xff00, 0, write8_delegate(FUNC(ay8910_device::address_w), m_psg.target())); - io_space().install_readwrite_handler(0x5f, 0x5f, 0, 0xff00, 0, read8_delegate(FUNC(ay8910_device::data_r), m_psg.target()), write8_delegate(FUNC(ay8910_device::data_w), m_psg.target())); - io_space().install_read_handler(0x7f, 0x7f, 0, 0xff00, 0, read8_delegate(FUNC(spectrum_fuller_device::joystick_r), this)); -} - - //************************************************************************** // IMPLEMENTATION //************************************************************************** -READ8_MEMBER(spectrum_fuller_device::joystick_r) -{ - return m_joy->read() | (0xff ^ 0x8f); -} - READ_LINE_MEMBER(spectrum_fuller_device::romcs) { return m_exp->romcs(); } -READ8_MEMBER(spectrum_fuller_device::mreq_r) +void spectrum_fuller_device::opcode_fetch(offs_t offset) { - return m_exp->mreq_r(space, offset); + m_exp->opcode_fetch(offset); } -WRITE8_MEMBER(spectrum_fuller_device::mreq_w) +uint8_t spectrum_fuller_device::mreq_r(offs_t offset) { + uint8_t data = 0xff; + if (m_exp->romcs()) - m_exp->mreq_w(space, offset, data); + data &= m_exp->mreq_r(offset); + + return data; } -READ8_MEMBER(spectrum_fuller_device::port_fe_r) +void spectrum_fuller_device::mreq_w(offs_t offset, uint8_t data) { - uint8_t data = 0xff; - if (m_exp->romcs()) - data &= m_exp->port_fe_r(space, offset); + m_exp->mreq_w(offset, data); +} +uint8_t spectrum_fuller_device::iorq_r(offs_t offset) +{ + uint8_t data = m_exp->iorq_r(offset); + + switch (offset & 0xff) + { + case 0x5f: + data &= m_psg->data_r(); + break; + case 0x7f: + data &= m_joy->read() | (0xff ^ 0x8f); + break; + } return data; } + +void spectrum_fuller_device::iorq_w(offs_t offset, uint8_t data) +{ + switch (offset & 0xff) + { + case 0x3f: + m_psg->address_w(data); + break; + case 0x5f: + m_psg->data_w(data); + break; + } + m_exp->iorq_w(offset, data); +} |