diff options
author | 2020-08-30 21:22:32 -0400 | |
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committer | 2020-08-31 11:22:32 +1000 | |
commit | 49466dc4ad10d6895a8111c136f8be482e243e95 (patch) | |
tree | 4e1410dfc706cc505d6b29d796aabaf32e888b58 /src/devices/bus/a2bus/uthernet.cpp | |
parent | 7a93c921fd7fa2ec837f8f70f6afebe0df74284d (diff) |
bus/a2bus: Added Uthernet card emulation for Apple IIgs (#7090)
* Ported Cirrus Logic CS8900A Crystal LAN MAC emulation from VICE and hooked it up to Apple II card device.
* Adds Ethernet networking support for Apple IIgs.
Diffstat (limited to 'src/devices/bus/a2bus/uthernet.cpp')
-rw-r--r-- | src/devices/bus/a2bus/uthernet.cpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/uthernet.cpp b/src/devices/bus/a2bus/uthernet.cpp new file mode 100644 index 00000000000..734edadcf1a --- /dev/null +++ b/src/devices/bus/a2bus/uthernet.cpp @@ -0,0 +1,74 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + uthernet.cpp + + Apple II Uthernet Card + +*********************************************************************/ + +#include "emu.h" +#include "uthernet.h" + +/*************************************************************************** + PARAMETERS +***************************************************************************/ + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE(A2BUS_UTHERNET, a2bus_uthernet_device, "a2uthernet", "Uthernet") + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +a2bus_uthernet_device::a2bus_uthernet_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + a2bus_uthernet_device(mconfig, A2BUS_UTHERNET, tag, owner, clock) +{ +} + +a2bus_uthernet_device::a2bus_uthernet_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, type, tag, owner, clock), + device_a2bus_card_interface(mconfig, *this), + m_netinf(*this, "cs8900a") +{ +} + +void a2bus_uthernet_device::device_add_mconfig(machine_config &config) +{ + CS8900A(config, m_netinf, 20_MHz_XTAL); // see CS8900A data sheet sec 3.13 +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void a2bus_uthernet_device::device_start() +{ +} + +void a2bus_uthernet_device::device_reset() +{ +} + +/*------------------------------------------------- + read_c0nx - called for reads from this card's c0nx space +-------------------------------------------------*/ + +uint8_t a2bus_uthernet_device::read_c0nx(uint8_t offset) +{ + return m_netinf->read(offset); +} + +/*------------------------------------------------- + write_c0nx - called for writes to this card's c0nx space +-------------------------------------------------*/ + +void a2bus_uthernet_device::write_c0nx(uint8_t offset, uint8_t data) +{ + m_netinf->write(offset,data); +} + |