/
apricotkb.cpp
373 lines (286 loc) · 11.2 KB
/
apricotkb.cpp
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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Apricot keyboard emulation
*********************************************************************/
#include "emu.h"
#include "apricotkb.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define UPD7507C_TAG "ic2"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(APRICOT_KEYBOARD, apricot_keyboard_device, "aprikb", "Apricot Keyboard")
//-------------------------------------------------
// ROM( apricot_keyboard )
//-------------------------------------------------
ROM_START( apricot_keyboard )
ROM_REGION( 0x800, UPD7507C_TAG, 0 )
ROM_LOAD( "keyboard controller upd7507c.ic2", 0x000, 0x800, NO_DUMP )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const tiny_rom_entry *apricot_keyboard_device::device_rom_region() const
{
return ROM_NAME( apricot_keyboard );
}
//-------------------------------------------------
// ADDRESS_MAP( kb_io )
//-------------------------------------------------
#ifdef UPD7507_EMULATED
void apricot_keyboard_device::apricot_keyboard_io(address_map &map)
{
map(0x00, 0x00).r(FUNC(apricot_keyboard_device::kb_lo_r));
map(0x01, 0x01).r(FUNC(apricot_keyboard_device::kb_hi_r));
map(0x03, 0x03).w(FUNC(apricot_keyboard_device::kb_p3_w));
map(0x04, 0x04).w(FUNC(apricot_keyboard_device::kb_y0_w));
map(0x05, 0x05).w(FUNC(apricot_keyboard_device::kb_y4_w));
map(0x06, 0x06).rw(FUNC(apricot_keyboard_device::kb_p6_r), FUNC(apricot_keyboard_device::kb_yc_w));
map(0x07, 0x07).w(FUNC(apricot_keyboard_device::kb_y8_w));
}
#endif
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void apricot_keyboard_device::device_add_mconfig(machine_config &config)
{
#ifdef UPD7507_EMULATED
upd7507_device &upd(UPD7507(config, UPD7507C_TAG, XTAL(32'768)));
upd.set_addrmap(AS_IO, &apricot_keyboard_device::apricot_keyboard_io);
#endif
}
//-------------------------------------------------
// INPUT_PORTS( apricot_keyboard )
//-------------------------------------------------
INPUT_PORTS_START( apricot_keyboard )
PORT_START("Y0")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y1")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y2")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y3")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y4")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y5")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y6")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y7")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y8")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y9")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y10")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y11")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("Y12")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD )
PORT_START("MODIFIERS")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor apricot_keyboard_device::device_input_ports() const
{
return INPUT_PORTS_NAME( apricot_keyboard );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// apricot_keyboard_device - constructor
//-------------------------------------------------
apricot_keyboard_device::apricot_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, APRICOT_KEYBOARD, tag, owner, clock),
m_write_txd(*this),
m_y(*this, "Y%u", 0),
m_modifiers(*this, "MODIFIERS")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void apricot_keyboard_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void apricot_keyboard_device::device_reset()
{
}
//-------------------------------------------------
// read_keyboard -
//-------------------------------------------------
uint8_t apricot_keyboard_device::read_keyboard()
{
uint8_t data = 0xff;
for (int i = 0; i < 13; i++)
{
if (!BIT(m_kb_y, i)) data &= m_y[i]->read();
}
return data;
}
//-------------------------------------------------
// kb_lo_r -
//-------------------------------------------------
uint8_t apricot_keyboard_device::kb_lo_r()
{
return read_keyboard() & 0x0f;
}
//-------------------------------------------------
// kb_hi_r -
//-------------------------------------------------
uint8_t apricot_keyboard_device::kb_hi_r()
{
return read_keyboard() >> 4;
}
//-------------------------------------------------
// kb_p6_r -
//-------------------------------------------------
uint8_t apricot_keyboard_device::kb_p6_r()
{
/*
bit description
P60
P61 SHIFT
P62 CONTROL
*/
uint8_t modifiers = m_modifiers->read();
return modifiers << 1;
}
//-------------------------------------------------
// kb_p3_w -
//-------------------------------------------------
void apricot_keyboard_device::kb_p3_w(uint8_t data)
{
// bit 1 controls the IR LEDs
}
//-------------------------------------------------
// kb_y0_w -
//-------------------------------------------------
void apricot_keyboard_device::kb_y0_w(uint8_t data)
{
m_kb_y = (m_kb_y & 0xfff0) | (data & 0x0f);
}
//-------------------------------------------------
// kb_y4_w -
//-------------------------------------------------
void apricot_keyboard_device::kb_y4_w(uint8_t data)
{
m_kb_y = (m_kb_y & 0xff0f) | ((data & 0x0f) << 4);
}
//-------------------------------------------------
// kb_y8_w -
//-------------------------------------------------
void apricot_keyboard_device::kb_y8_w(uint8_t data)
{
m_kb_y = (m_kb_y & 0xf0ff) | ((data & 0x0f) << 8);
}
//-------------------------------------------------
// kb_yc_w -
//-------------------------------------------------
void apricot_keyboard_device::kb_yc_w(uint8_t data)
{
m_kb_y = (m_kb_y & 0xf0ff) | ((data & 0x0f) << 12);
}