// license:BSD-3-Clause
// copyright-holders:R. Belmont
/*
Apple Macintosh original/512/Plus keyboard
Emulation by R. Belmont
Port definitions from "IM Underground Volume 1"
http://bitsavers.org/pdf/apple/mac/IM_Underground_Vol_1_1985.pdf
Key matrix for keyboard:
Cols 0 1 2 3 4 5 6 7 8 Rows
G B T 5 0 P ; . n/a 0
H n/a Y 6 8 I K M Enter 1
F V R 4 - [ ' N Backsp 2
D C E 3 7 U J / ` 3
S X W 2 9 O L , Space 4
A Z Q 1 = ] Ret \ Tab 5
Port 0:
x------- Clock to Mac
-x------ Caps Lock
--x----- Row 5 readback (tied to Vcc for keypad)
---x---- Row 4 readback
----x--- Row 3 readback
-----x-- Row 2 readback
------x- Row 1 readback
-------x Row 0 readback
Port 1:
x------- Column 8 strobe
-x------ Column 7 strobe
--x----- Column 6 strobe
---x---- Column 5 strobe
----x--- Column 4 strobe
-----x-- Column 3 strobe
------x- Column 2 strobe
-------x Column 1 strobe
Port 2:
x--- Command/Apple
-x-- Shift
--x- Column 0 strobe
---x Data to Mac
The T1 line is "Option".
There is a later M0110 keyboard version which uses a GI PIC1657; we do not have a dump of that version.
*/
#include "emu.h"
#include "mackbd.h"
#include "cpu/mcs48/mcs48.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define MACKBD_CPU_TAG "mackbd"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(MACKBD, mackbd_device, "mackbd", "Macintosh Keyboard")
ROM_START( mackbd )
ROM_REGION(0x800, MACKBD_CPU_TAG, 0)
// original Mac keyboard and optional external keypad
ROM_LOAD( "ip8021h_2173.bin", 0x000000, 0x000400, CRC(5fbd9a94) SHA1(32a3b58afb445a8675b12a4de3aec2fa00c99222) )
// Mac Plus all-in-one keyboard (not yet supported)
ROM_LOAD( "341-0332-a.bin", 0x000400, 0x000400, CRC(6554f5b6) SHA1(a80404a122d74721cda13b285c412057c2c78bd7) )
ROM_END
static INPUT_PORTS_START( mackbd )
PORT_START("COL0")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
PORT_START("COL1")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_UNKNOWN)
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
PORT_START("COL2")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
PORT_START("COL3")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_START("COL4")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
PORT_START("COL5")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
PORT_START("COL6")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r') PORT_NAME("Return")
PORT_START("COL7")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
PORT_START("COL8")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_UNKNOWN)
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_UNKNOWN)
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~')
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t')
PORT_START("MODS")
PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE
PORT_BIT(0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Option") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_SHIFT_2)
PORT_BIT(0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Command") PORT_CODE(KEYCODE_LCONTROL)
INPUT_PORTS_END
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
MACHINE_CONFIG_START(mackbd_device::device_add_mconfig)
MCFG_DEVICE_ADD(MACKBD_CPU_TAG, I8021, 3000000) // "the approximate clock rate of the MPU is 3 MHz"
MCFG_MCS48_PORT_BUS_IN_CB(READ8(*this, mackbd_device, p0_r))
MCFG_MCS48_PORT_BUS_OUT_CB(WRITE8(*this, mackbd_device, p0_w))
MCFG_MCS48_PORT_P1_IN_CB(READ8(*this, mackbd_device, p1_r))
MCFG_MCS48_PORT_P1_OUT_CB(WRITE8(*this, mackbd_device, p1_w))
MCFG_MCS48_PORT_P2_IN_CB(READ8(*this, mackbd_device, p2_r))
MCFG_MCS48_PORT_P2_OUT_CB(WRITE8(*this, mackbd_device, p2_w))
MCFG_MCS48_PORT_T1_IN_CB(IOPORT("MODS")) MCFG_DEVCB_RSHIFT(1) // option
MACHINE_CONFIG_END
const tiny_rom_entry *mackbd_device::device_rom_region() const
{
return ROM_NAME( mackbd );
}
ioport_constructor mackbd_device::device_input_ports() const
{
return INPUT_PORTS_NAME( mackbd );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// mackbd_device - constructor
//-------------------------------------------------
mackbd_device::mackbd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, MACKBD, tag, owner, clock),
m_maincpu(*this, MACKBD_CPU_TAG),
m_clkout_handler(*this),
m_dataout_handler(*this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void mackbd_device::device_start()
{
m_clkout_handler.resolve_safe();
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void mackbd_device::device_reset()
{
p0 = p1 = p2 = 0;
p0 = 0x3f;
data_from_mac = data_to_mac = 0;
}
void mackbd_device::scan_kbd_col(int col)
{
char tempcol[8];
uint16_t keydata;
// read the selected col
sprintf(tempcol, "COL%d", col);
keydata = ioport(tempcol)->read();
p0 &= ~0x3f;
p0 |= (keydata & 0x3f);
// set modifier bits in p2
p2 = ioport("MODS")->read() & 0xc;
}
READ8_MEMBER(mackbd_device::p0_r)
{
uint8_t ret = p0;
// capslock
if (ioport("MODS")->read() & 0x1)
{
ret |= 0x40;
}
return ret;
}
WRITE8_MEMBER(mackbd_device::p0_w)
{
if (!(data & 2))
{
scan_kbd_col(0);
}
if (data & 0x80)
{
m_clkout_handler(ASSERT_LINE);
}
else
{
m_clkout_handler(CLEAR_LINE);
// machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(10));
}
}
READ8_MEMBER(mackbd_device::p1_r)
{
return p1;
}
WRITE8_MEMBER(mackbd_device::p1_w)
{
data ^= 0xff;
if (data & 0x01) scan_kbd_col(1);
if (data & 0x02) scan_kbd_col(2);
if (data & 0x04) scan_kbd_col(3);
if (data & 0x08) scan_kbd_col(4);
if (data & 0x10) scan_kbd_col(5);
if (data & 0x20) scan_kbd_col(6);
if (data & 0x40) scan_kbd_col(7);
if (data & 0x80) scan_kbd_col(8);
}
READ8_MEMBER(mackbd_device::p2_r)
{
return p2 | data_from_mac;
}
WRITE8_MEMBER(mackbd_device::p2_w)
{
// prevent key scan accesses to the port from messing with the data line (how does this work on h/w?)
if (m_maincpu->pc() != 0x19e && m_maincpu->pc() != 0x1a3)
{
data_to_mac = data_from_mac = (data & 1);
// printf("data to/from mac = %d (PC=%x)\n", data_to_mac, m_maincpu->pc());
}
}
WRITE_LINE_MEMBER(mackbd_device::data_w)
{
data_from_mac = (state == ASSERT_LINE) ? 1 : 0;
}