diff options
Diffstat (limited to 'src/devices/bus/archimedes/podule/io_hccs.cpp')
-rw-r--r-- | src/devices/bus/archimedes/podule/io_hccs.cpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/devices/bus/archimedes/podule/io_hccs.cpp b/src/devices/bus/archimedes/podule/io_hccs.cpp new file mode 100644 index 00000000000..7daabf0f980 --- /dev/null +++ b/src/devices/bus/archimedes/podule/io_hccs.cpp @@ -0,0 +1,143 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/********************************************************************** + + HCCS User/Analogue Podule + + http://chrisacorns.computinghistory.org.uk/32bit_UpgradesH2Z/HCCS_UserAnalogue.html + +**********************************************************************/ + +#include "emu.h" +#include "io_hccs.h" +#include "machine/6522via.h" +#include "machine/upd7002.h" +#include "bus/bbc/analogue/analogue.h" +#include "bus/bbc/userport/userport.h" + + +namespace { + +// ======================> arc_upa_hccs_device + +class arc_upa_hccs_device : + public device_t, + public device_archimedes_podule_interface +{ +public: + // construction/destruction + arc_upa_hccs_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + +protected: + // device-level overrides + virtual void device_start() override; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override; + virtual const tiny_rom_entry *device_rom_region() const override; + + // device_archimedes_podule_interface overrides + virtual void ioc_map(address_map &map) override; + +private: + required_memory_region m_podule_rom; + required_device<bbc_analogue_slot_device> m_analog; + + int get_analogue_input(int channel_number); +}; + + +void arc_upa_hccs_device::ioc_map(address_map &map) +{ + map(0x0000, 0x1fff).lr8(NAME([this](offs_t offset) { return m_podule_rom->base()[offset | 0x4000]; })).umask32(0x000000ff); + map(0x2000, 0x203f).rw("via", FUNC(via6522_device::read), FUNC(via6522_device::write)).umask32(0x000000ff); + map(0x3000, 0x300f).rw("upd7002", FUNC(upd7002_device::read), FUNC(upd7002_device::write)).umask32(0x000000ff); +} + + +//------------------------------------------------- +// ROM( upa_hccs ) +//------------------------------------------------- + +ROM_START( upa_hccs ) + ROM_REGION(0x8000, "podule_rom", 0) + ROM_SYSTEM_BIOS(0, "7", "V7.00 (04 Jul 1991)") + ROMX_LOAD("upa_v7.00.bin", 0x0000, 0x8000, CRC(e4d5514e) SHA1(1a5d5c2571624df6fbeff91045c5b40effeda1d9), ROM_BIOS(0)) +ROM_END + +const tiny_rom_entry *arc_upa_hccs_device::device_rom_region() const +{ + return ROM_NAME( upa_hccs ); +} + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void arc_upa_hccs_device::device_add_mconfig(machine_config &config) +{ + via6522_device &via(MOS6522(config, "via", DERIVED_CLOCK(1, 4))); + via.irq_handler().set([this](int state) { set_pirq(state); }); + via.readpa_handler().set(m_analog, FUNC(bbc_analogue_slot_device::pb_r)); + via.readpb_handler().set("userport", FUNC(bbc_userport_slot_device::pb_r)); + via.writepb_handler().set("userport", FUNC(bbc_userport_slot_device::pb_w)); + via.cb1_handler().set("userport", FUNC(bbc_userport_slot_device::write_cb1)); + via.cb2_handler().set("userport", FUNC(bbc_userport_slot_device::write_cb2)); + + bbc_userport_slot_device &userport(BBC_USERPORT_SLOT(config, "userport", bbc_userport_devices, nullptr)); + userport.cb1_handler().set("via", FUNC(via6522_device::write_cb1)); + userport.cb2_handler().set("via", FUNC(via6522_device::write_cb2)); + + upd7002_device &upd7002(UPD7002(config, "upd7002", DERIVED_CLOCK(1, 4))); + upd7002.set_get_analogue_callback(FUNC(arc_upa_hccs_device::get_analogue_input)); + upd7002.set_eoc_callback("via", FUNC(via6522_device::write_ca2)); + + BBC_ANALOGUE_SLOT(config, m_analog, bbc_analogue_devices, nullptr); + m_analog->lpstb_handler().set("via", FUNC(via6522_device::write_ca1)); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// arc_upa_hccs_device - constructor +//------------------------------------------------- + +arc_upa_hccs_device::arc_upa_hccs_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) + : device_t(mconfig, ARC_UPA_HCCS, tag, owner, clock) + , device_archimedes_podule_interface(mconfig, *this) + , m_podule_rom(*this, "podule_rom") + , m_analog(*this, "analogue") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void arc_upa_hccs_device::device_start() +{ +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +int arc_upa_hccs_device::get_analogue_input(int channel_number) +{ + return (0xff - m_analog->ch_r(channel_number)) << 8; +} + +} // anonymous namespace + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +DEFINE_DEVICE_TYPE_PRIVATE(ARC_UPA_HCCS, device_archimedes_podule_interface, arc_upa_hccs_device, "arc_upa_hccs", "HCCS User/Analogue Podule") |