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author | 2018-09-15 18:03:05 +0200 | |
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committer | 2018-09-15 18:03:05 +0200 | |
commit | cbdc9a71c7e0a4466f3406a3bb90f7ea8be5d0fb (patch) | |
tree | db97a7f76bc03be7bfbd83bdedfc9f1b1b30fe76 /src/devices/bus/sbus/sunpc.cpp | |
parent | c26638fb146b3ac51e7100bb3179c3346aebfaff (diff) |
-sbus: Added a skeleton device for the SunPC 5x86 Accelerator SBus board. [Ryan Holtz, Andrew Liles]
Diffstat (limited to 'src/devices/bus/sbus/sunpc.cpp')
-rw-r--r-- | src/devices/bus/sbus/sunpc.cpp | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/devices/bus/sbus/sunpc.cpp b/src/devices/bus/sbus/sunpc.cpp new file mode 100644 index 00000000000..761948581c9 --- /dev/null +++ b/src/devices/bus/sbus/sunpc.cpp @@ -0,0 +1,71 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +/*************************************************************************** + + Sun SunPC 5x86 Accelerator (501-4230) skeleton + + Notable parts on board: + - 1x AMD AM27C256 PLCC ROM + - 1x Motorola SunPC Accelerator 100-3069-03, mfr/date AANL9732 + - 6x Cypress CY7B185-10VC 64kBit Static RAM + - 1x AMD 5x86 (under heatsink; markings unknown) + +***************************************************************************/ + +#include "emu.h" +#include "sunpc.h" + +DEFINE_DEVICE_TYPE(SBUS_SUNPC, sbus_sunpc_device, "sbus_sunpc", "Sun SunPC accelerator") + +void sbus_sunpc_device::mem_map(address_map &map) +{ + map(0x00000000, 0x01ffffff).rw(FUNC(sbus_sunpc_device::unknown_r), FUNC(sbus_sunpc_device::unknown_w)); + map(0x00000000, 0x00007fff).r(FUNC(sbus_sunpc_device::rom_r)); +} + +ROM_START( sbus_sunpc ) + ROM_REGION32_BE(0x8000, "prom", ROMREGION_ERASEFF) + ROM_LOAD( "sunw,501-1763-01.bin", 0x0000, 0x8000, CRC(171f50f8) SHA1(21c4c02bc5a3a0494301f19c54ba0e207568fb42)) +ROM_END + +const tiny_rom_entry *sbus_sunpc_device::device_rom_region() const +{ + return ROM_NAME( sbus_sunpc ); +} + +void sbus_sunpc_device::device_add_mconfig(machine_config &config) +{ +} + + +sbus_sunpc_device::sbus_sunpc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, SBUS_SUNPC, tag, owner, clock) + , device_sbus_card_interface(mconfig, *this) + , m_rom(*this, "prom") +{ +} + +void sbus_sunpc_device::device_start() +{ +} + +void sbus_sunpc_device::install_device() +{ + m_sbus->install_device(m_base, m_base + 0x1ffffff, *this, &sbus_sunpc_device::mem_map); +} + +READ32_MEMBER(sbus_sunpc_device::unknown_r) +{ + logerror("%s: unknown_r: %08x & %08x\n", machine().describe_context(), offset << 2, mem_mask); + return 0; +} + +WRITE32_MEMBER(sbus_sunpc_device::unknown_w) +{ + logerror("%s: unknown_w: %08x = %08x & %08x\n", machine().describe_context(), offset << 2, data, mem_mask); +} + +READ32_MEMBER(sbus_sunpc_device::rom_r) +{ + return ((uint32_t*)m_rom->base())[offset]; +} |