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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 ATTR_COLD;
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
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")
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