diff options
Diffstat (limited to 'src/devices/machine/rf5c296.cpp')
-rw-r--r-- | src/devices/machine/rf5c296.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/devices/machine/rf5c296.cpp b/src/devices/machine/rf5c296.cpp new file mode 100644 index 00000000000..72fea9ede66 --- /dev/null +++ b/src/devices/machine/rf5c296.cpp @@ -0,0 +1,113 @@ +// license:BSD-3-Clause +// copyright-holders:smf +#include "rf5c296.h" + +// rf5c296 is very inaccurate at that point, it hardcodes the gnet config + +const device_type RF5C296 = &device_creator<rf5c296_device>; + +rf5c296_device::rf5c296_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, PCCARD_SLOT, "PCCARD SLOT", tag, owner, clock, "pccard", __FILE__) +{ +} + +void rf5c296_device::device_start() +{ + m_pccard = machine().device<pccard_slot_device>(m_pccard_name); +} + +void rf5c296_device::reg_w(ATTR_UNUSED UINT8 reg, UINT8 data) +{ + // fprintf(stderr, "rf5c296_reg_w %02x, %02x (%s)\n", reg, data, machine().describe_context()); + switch (reg) + { + // Interrupt and General Control Register + case 0x03: + // Check for card reset + if (!(data & 0x40)) + { + m_pccard->reset(); + } + break; + + default: + break; + } +} + +UINT8 rf5c296_device::reg_r(ATTR_UNUSED UINT8 reg) +{ + // fprintf(stderr, "rf5c296_reg_r %02x (%s)\n", reg, machine().describe_context()); + return 0x00; +} + +WRITE16_MEMBER(rf5c296_device::io_w) +{ + /// TODO: find out if this should be done here. + offset *= 2; + if (mem_mask == 0xff00) + { + mem_mask >>= 8; + data >>= 8; + offset++; + } + + switch(offset) + { + case 0x3e0: + m_rf5c296_reg = data; + break; + + case 0x3e1: + reg_w(m_rf5c296_reg, data); + break; + + default: + m_pccard->write_memory(space, offset, data, mem_mask); + break; + } +} + +READ16_MEMBER(rf5c296_device::io_r) +{ + /// TODO: find out if this should be done here. + offset *= 2; + int shift = 0; + if (mem_mask == 0xff00) + { + shift = 8; + mem_mask >>= 8; + offset++; + } + + UINT16 data; + + switch( offset ) + { + case 0x3e0: + data = m_rf5c296_reg; + break; + + case 0x3e1: + data = reg_r(m_rf5c296_reg); + break; + + default: + data = m_pccard->read_memory(space, offset, mem_mask); + break; + } + + return data << shift; +} + +// Hardcoded to reach the pcmcia CIS + +READ16_MEMBER(rf5c296_device::mem_r) +{ + return m_pccard->read_reg(space, offset, mem_mask); +} + +WRITE16_MEMBER(rf5c296_device::mem_w) +{ + m_pccard->write_reg(space, offset, data, mem_mask); +} |