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Diffstat (limited to 'src/devices/bus/msx/cart/easi_speech.cpp')
-rw-r--r--src/devices/bus/msx/cart/easi_speech.cpp98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/devices/bus/msx/cart/easi_speech.cpp b/src/devices/bus/msx/cart/easi_speech.cpp
new file mode 100644
index 00000000000..8b9b1f087f3
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+++ b/src/devices/bus/msx/cart/easi_speech.cpp
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+// license:BSD-3-Clause
+// copyright-holders:hap
+/******************************************************************************
+
+Easi-Speech cartridge (R.Amy, 1987)
+It has a GI SP0256A-AL2 (no XTAL)
+
+The program adds a hook to 0xfd29, usage appears to be something like this:
+n%=(number 0-511):a=usr9(n%)
+or a=usr9(number)
+
+Or a custom string:
+a$="hello world":a$=usr9(a$)
+or a$=usr9("string")
+
+******************************************************************************/
+
+#include "emu.h"
+#include "easi_speech.h"
+#include "sound/sp0256.h"
+
+namespace {
+
+class msx_cart_easispeech_device : public device_t, public msx_cart_interface
+{
+public:
+ msx_cart_easispeech_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, MSX_CART_EASISPEECH, tag, owner, clock)
+ , msx_cart_interface(mconfig, *this)
+ , m_speech(*this, "speech")
+ { }
+
+ virtual std::error_condition initialize_cartridge(std::string &message) override;
+
+protected:
+ // device_t implementation
+ virtual void device_start() override { }
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+
+private:
+ u8 speech_r();
+ void speech_w(u8 data);
+
+ required_device<sp0256_device> m_speech;
+};
+
+ROM_START(msx_cart_easispeech)
+ ROM_REGION(0x10000, "speech", 0)
+ ROM_LOAD("sp0256a-al2", 0x1000, 0x0800, CRC(b504ac15) SHA1(e60fcb5fa16ff3f3b69d36c7a6e955744d3feafc) )
+ROM_END
+
+const tiny_rom_entry *msx_cart_easispeech_device::device_rom_region() const
+{
+ return ROM_NAME(msx_cart_easispeech);
+}
+
+void msx_cart_easispeech_device::device_add_mconfig(machine_config &config)
+{
+ SP0256(config, m_speech, DERIVED_CLOCK(1, 1)); // appears to be connected to slot CLOCK pin
+ if (parent_slot())
+ m_speech->add_route(ALL_OUTPUTS, soundin(), 1.0);
+}
+
+std::error_condition msx_cart_easispeech_device::initialize_cartridge(std::string &message)
+{
+ if (!cart_rom_region())
+ {
+ message = "msx_cart_easispeech_device: Required region 'rom' was not found.";
+ return image_error::INTERNAL;
+ }
+
+ if (cart_rom_region()->bytes() != 0x2000)
+ {
+ message = "msx_cart_easispeech_device: Region 'rom' has unsupported size.";
+ return image_error::INVALIDLENGTH;
+ }
+
+ page(1)->install_rom(0x4000, 0x5fff, 0x2000, cart_rom_region()->base());
+ page(2)->install_read_handler(0x8000, 0x8000, emu::rw_delegate(*this, FUNC(msx_cart_easispeech_device::speech_r)));
+ page(2)->install_write_handler(0x8000, 0x8000, emu::rw_delegate(*this, FUNC(msx_cart_easispeech_device::speech_w)));
+
+ return std::error_condition();
+}
+
+u8 msx_cart_easispeech_device::speech_r()
+{
+ return m_speech->lrq_r() << 7;
+}
+
+void msx_cart_easispeech_device::speech_w(u8 data)
+{
+ m_speech->ald_w(bitswap<6>(data,3,5,7,6,4,2));
+}
+
+} // anonymous namespace
+
+DEFINE_DEVICE_TYPE_PRIVATE(MSX_CART_EASISPEECH, msx_cart_interface, msx_cart_easispeech_device, "msx_cart_easispeech", "MSX Cartridge - Easi-Speech")