// license:BSD-3-Clause
// copyright-holders:R. Belmont, M. Burke
/*
DEC LK-201 keyboard
Emulation by R. Belmont & M. Burke
with contributions by Cracyc and Karl-Ludwig Deisenhofer (2016)
This is the later "cost-reduced" 6805 version with green LEDs; there's also an 8048 version.
The LK-201 mechanical elements are described in US Patent 4,467,150
*/
/* LK201-AA keyboard matrix (8048 version with updates)
Source: VCB02 Technical Reference.
KBD controller scan matrix (PORT 1): 8 x BCD IN => 18 DECIMAL OUT
Keyboard itself:
18 x IN (KEYBOARD DRIVE) KBD 17... KBD 0 =>
8 OUT (keyboard data @ D7..D0)
to => PORT 0 @ KBD controller.
________|D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0
..KBD17:|[R] |F19 |[R] |F20|PF4|N- | N,| Enter (numpad)
........| | | | | | NOTE1)
........| |G22 | |G23|E23|D23|C23| A23
--------|----|----|----|---|---|---|---|---
..KBD16:|F18 |PF3 |[R] |N9 |C:D|N6 |N3 |N.
........|G21 |E22 | |D22|B17|C22|B22|A22
--------|----|----|----|---|---|---|---|---
..KBD15:|F17 |PF2 |[R] |N8 |N5 |C:R| N2|N0 (right)
........| | | | | | | |see NOTE 2)
........|G20 |E21 | |D21|C21|B18|B21|A21
--------|----|----|----|---|---|---|---|---
KBD14:|PF1 |Next|Rem-|C:U|N7 |N4 |N1 |N0 (left)
........| |Scrn|move|...| | | |see NOTE 2)
........|E20 |D18 |E18 |C17|D20|C20|B20|A20
--------|----|----|----|---|---|---|---|---
..KBD13:|Ins.|'_' |'Do'|Prev { |" |[R]|[R]
........|Here|'-' | |Scrn [ |' | |
........|E17 |E11 |G16 |D17|D11|C11|B13|A17
--------|----|----|----|---|---|---|---|---
..KBD12:|Find|+ |Help|Se-| } |Re-|C:L| |
........| |= | |lect ] |turn...| \
........|E16 |E12 |G15 |D16 D12|C13|B16|C12
--------|----|----|----|---|---|---|---|---
..KBD11:Addtnl <X||[R] |) |P NOTE|: | ?
.......Options Del| |0 | | 3)|; | /
........|G14 | E13|....|E10|D10|...|C10|B10
--------|----|----|----|---|---|---|---|---
..KBD10:|[R] |F12 |[R] |F13| ( |O |L | .
........|....|(BS)| |(LF) 9 | | | .
........|....|G12 |....|G13|E09|D09|C09|B09
--------|----|----|----|---|---|---|---|---
..KBD_9:|[R] |F11 |[R] |[R]|* |I |K | ,
........|....|ESC | | |8 | | | ,
........|....|G11 |....|...|E08|D08|C08|B08
--------|----|----|----|---|---|---|---|---
..KBD_8:|[R] |Main|[R] Exit|& |U |J |M
........| |Scrn| | |7 | | |
........| |G08 | |G09|E07|D07|C07|B07
--------|----|----|----|---|---|---|---|---
..KBD_7:|[R] Cancel[R] Resu ^ |Y |H |N
........|....|....|.....me |6 | | |
........|....|G07 |....|G06|E06|D06|C06|B06
--------|----|----|----|---|---|---|---|---
..KBD_6:|[R] |[R] |[R] Inter % |T |G |B
........|....|....|....rupt| 5 | | |
........|....|....|....|G05|E05|D05|C05|B05
--------|----|----|----|---|---|---|---|---
..KBD_5: F4 |Break [R]|$ |R |F |V |Space
........|....|....|....|4 | | | |
........ G02 |G03 |....|E04 D04 C04 B04 A01-A09
--------|----|----|----|---|---|---|---|---
..KBD_4: [R] |Prt.|[R] |Set|# |E |D |C
........|....|Scrn|....|-Up|3 | | |
........|....|G00 |....|G01 E03 D03 C03 B03
--------|----|----|----|---|---|---|---|---
..KBD_3: Hold| @ |[R] |Tab|W |S |X |>
........|Scrn| 2 |....| | | | |<
........|G99 |E02 |....|D00|D02|C02|B02|B00
--------|----|----|----|---|---|---|---|---
..KBD_2: [R] |[R] |[R] |~ |! |Q |A |Z
........|..............|...|1
........|..............|E00 E01 D01 C01 B01
--------|----|----|----|---|---|---|---|---
..KBD_1: Ctrl|Lock|Comp|[R]
........|C99 |C00 |A99 |
--------|----|----|----|---|---|---|---|---
..KBD_0: Shift
........|B99,B11
---
[R] = Reserved
NOTE 1) N0-N9, N-, N. and N, refer to numeric keypad
NOTE 2) N0 can be divided into 2 keys.
Normally only the N0 keyswitch is implemented as a double-sized key.
A21 = N0 (right); A20 = N0 (left)
NOTE 3) Return key occupies 2 positions that are
decoded as the Return (C13) key. C13 = RETURN (bot.); D13 = RETURN (top)
C:D - Cursor down (B17)
C:U - Cursor up (C17)
C:R - Cursor right (B18)
*/
#include "emu.h"
#include "dec_lk201.h"
#include "cpu/m6805/m6805.h"
#include "speaker.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define LK201_CPU_TAG "lk201_cpu"
#define LK201_SPK_TAG "beeper"
//-------------------------------------------------
// SERIAL COMMUNICATIONS INTERFACE
//-------------------------------------------------
#define SCI_BAUD 0 // Baud rate register
#define BAUD_SCR 0x07 // SCI baud rate select
#define BAUD_SCP 0x30 // SCI prescaler select
#define SCI_SCCR1 1 // Control register 1
#define SCCR1_WAKE 0x08 // Wakeup method
#define SCCR1_M 0x10 // Character length
#define SCCR1_T8 0x40 // Transmit bit 8
#define SCCR1_R8 0x80 // Receive bit 8
#define SCI_SCCR2 2 // Control register 2
#define SCCR2_SBK 0x01 // Send break
#define SCCR2_RWU 0x02 // Receiver wakeup enable
#define SCCR2_RE 0x04 // Receiver enable
#define SCCR2_TE 0x08 // Transmitter enable
#define SCCR2_ILIE 0x10 // Idle line interrupt enable
#define SCCR2_RIE 0x20 // Receiver interrupt enable
#define SCCR2_TCIE 0x40 // Transmit complete interrupt enable
#define SCCR2_TIE 0x80 // Transmit interrupt enable
#define SCI_SCSR 3 // Status register
#define SCSR_FE 0x02 // Receiver framing error
#define SCSR_NF 0x04 // Receiver noise
#define SCSR_OR 0x08 // Receiver overrun
#define SCSR_IDLE 0x10 // Receiver idle
#define SCSR_RDRF 0x20 // Receive data register full
#define SCSR_TC 0x40 // Transmit complete
#define SCSR_TDRE 0x80 // Transmit data register empty
#define SCSR_INT (SCSR_IDLE | SCSR_RDRF| \
SCSR_TC | SCSR_TDRE) // Interrupt sources
#define SCI_SCDR 4 // Data register
//-------------------------------------------------
// SERIAL PERIPHERAL INTERFACE
//-------------------------------------------------
#define SPI_SPCR 0 // Control register
#define SPCR_SPR 0x03 // SPI clock rate select
#define SPCR_CPHA 0x04 // Clock phase
#define SPCR_CPOL 0x08 // Clock polarity
#define SPCR_MSTR 0x10 // Master mode select
#define SPCR_DWOM 0x20 // Port D wire-or mode option
#define SPCR_SPE 0x40 // Serial peripheral system enable
#define SPCR_SPIE 0x80 // Serial peripheral interrupt enable
#define SPI_SPSR 1 // Status register
#define SPSR_MODF 0x10 // Mode fault flag
#define SPSR_WCOL 0x40 // Write collision
#define SPSR_SPIF 0x80 // SPI transfer complete
#define SPI_SPDR 2 // Data I/O Register
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(LK201, lk201_device, "lk201", "DEC LK201 Keyboard")
ROM_START( lk201 )
ROM_REGION(0x2000, LK201_CPU_TAG, 0)
// 23-001s9-00.bin is for the newer LK201 version (green LEDs, Motorola 6805)
ROM_LOAD( "23-001s9-00.bin", 0x0000, 0x2000, CRC(be293c51) SHA1(a11ae004d2d6055d7279da3560c3e56610a19fdb) )
// 23-004M1 or 23-004M2 are in the older LK201 keyboard with red LEDs (8051 or 8051H respectively, same code on both?)
ROM_REGION( 0x1000, "i8051cpu", 0 )
ROM_LOAD( "23-004m2.8051h.e1", 0x0000, 0x1000, CRC(35dd04c6) SHA1(9744c561d76fe85afaccc7a2485ce2865236873a) )
ROM_END
//-------------------------------------------------
// ADDRESS_MAP
//-------------------------------------------------
void lk201_device::lk201_map(address_map &map)
{
map(0x0000, 0x0002).rw(FUNC(lk201_device::ports_r), FUNC(lk201_device::ports_w));
map(0x0004, 0x0006).rw(FUNC(lk201_device::ddr_r), FUNC(lk201_device::ddr_w));
map(0x000a, 0x000c).rw(FUNC(lk201_device::spi_r), FUNC(lk201_device::spi_w));
map(0x000d, 0x0011).rw(FUNC(lk201_device::sci_r), FUNC(lk201_device::sci_w));
map(0x0012, 0x001b).rw(FUNC(lk201_device::timer_r), FUNC(lk201_device::timer_w));
map(0x0050, 0x00ff).ram();
map(0x0100, 0x1fff).rom().region(LK201_CPU_TAG, 0x100);
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void lk201_device::device_add_mconfig(machine_config &config)
{
M68HC05EG(config, m_maincpu, XTAL(4'000'000)); // actually 68HC05C4, clock verified by Lord_Nightmare
m_maincpu->set_addrmap(AS_PROGRAM, &lk201_device::lk201_map);
SPEAKER(config, "mono").front_center();
BEEP(config, m_speaker, 2000); // clocked by a 555 timer at E8, the volume of the beep is controllable by: (8051 model) P2.0 thru P2.3, or (6805 model) the upper 4 bits of the LED data latch
m_speaker->add_route(ALL_OUTPUTS, "mono", 0.50);
}
const tiny_rom_entry *lk201_device::device_rom_region() const
{
return ROM_NAME( lk201 );
}
//-------------------------------------------------
// INPUT_PORTS( lk201 )
//-------------------------------------------------
/* [Foreign language caps] are referenced in software titles. Please leave them in.
DEC omitted terms like 'Interrupt', 'Break' and 'Data / Talk' on some keyboards,
so Fn numbers are definitely important for end users.
=== CURRENT SPECIAL KEYS ===
[PC-AT] ......=> [DEC]
LEFT CONTROL..=> Control
LEFT ALT .....=> Compose
RIGHT ALT ....=> Help
RIGHT CONTROL => Do
==============================================================================================
=== (PC - AT ) keys above cursor block ===
* KEYCODE_INSERT * KEYCODE_HOME * KEYCODE_PGUP
* KEYCODE_DEL... * KEYCODE_END * KEYCODE_PGDN
=== (DEC LK 201 layout above cursor) ===
* Find ........| Insert Here | Remove
* Select.........| Prev ..... | Next
==============================================================================================
=== CURRENT NUM PAD ASSIGNMENTS ===
[PF1] to [PF4] are mapped to NUM LOCK, SLASH etc. (=> 4 keys on top on num pad).
Num pad '+' gives ',' on the DEC.
',' translates to '.' (=> more or less the layout of model 'LK-201-AG')
Switch between 'full' and 'partial keyboard emulation' with Scroll Lock.
*/
INPUT_PORTS_START( lk201 )
/*
Actual membrane part number (from later 6805-based LK201 keyboard): 54-15172
Matrix Rows to bit translation, from schematic page 20 ( http://bitsavers.trailing-edge.com/pdf/dec/terminal/lk201/MP01395_LK201_Schematic_Oct83.pdf )
Bit D0 - Column P3-3
D1 - Column P3-7
D2 - Column P3-8
D3 - Column P3-12
D4 - Column P2-8
D5 - Column P1-2
D6 - Column P3-11
D7 - Column P1-3
Keyboard Matrix
---------------
Row select
| Columns SwitchID by bit Columns Key by bit
| D5 D7 D4 D0 D1 D2 D3 D6 D5 D7 D4 D0 D1 D2 D3 D6
V V V V V V V V V V V V V V V V V
P1-6 --- E99 E00 B01 C01 D01 E01 D99 --- N/C ` Z A Q 1 N/C
P1-7 --- G99 D00 B00 B02 C02 D02 E02 --- F1 TAB <> X S W 2
P1-9 --- --- G01 B03 C03 D03 E03 G00 --- --- F3 C D E 3 F2
P1-10 A99 C99 A10 --- --- --- --- C00 COMP CTRL N/C --- --- --- --- CAPS
P1-11 --- G02 E04 A0406 B04 C04 D04 G03 --- F4 4 SPACE V F R F5
P2-2 --- --- G05 B05 C05 D05 E05 G04 --- --- F6 B G T 5 N/C
P2-3 --- --- G06 B06 C06 D06 E06 G07 --- --- F7 N H Y 6 F8
P2-4 --- --- G09 B07 C07 D07 E07 G08 --- --- F10 M J U 7 F9
P2-5 --- B9911 --- --- --- --- --- --- --- SHFT --- --- --- --- --- ---
P2-6 --- --- G10 B08 C08 D08 E08 G11 --- --- N/C , K I 8 F11
P2-9 --- --- G13 B09 C09 D09 E09 G12 --- --- F13 . L O 9 F12
P2-10 --- G14 E10 B10 C10 D13 D10 E13 --- F14 0 / ; N/C P BKSP(DEL)
P2-11 G15 E16 D16 C12 B16 C13 D12 E12 HELP FIND SLCT \ LEFT RETN ] =
P3-2 G16 E17 D17 A17 B13 C11 D11 E11 DO INST PREV N/C N/C ' [ -
P3-4 E18 E20 C17 A20 B20 C20 D20 D18 RMVE PF1 UP k0 k1 k4 k7 NEXT
P3-5 --- G20 D21 A21 B21 B18 C21 E21 --- F17 k8 N/C k2 RGHT k5 PF2
P3-6 --- G21 D22 A22 B22 C22 B17 E22 --- F18 k9 k. k3 k6 DOWN PF3
P3-9 --- --- G23 A23 C23 D23 E23 G22 --- --- F20 kRTN k, k- PF4 F19
--- = No matrix switch at all
N/C = switch present, but officially unused?
*/
PORT_START("KBD0") // Row P2-5
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // B99 and B11
PORT_START("KBD1") // Row P1-10
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) // A10, exists but no key above this position (right compose?)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Compose") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT)) // A99
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Caps Lock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // C00, does not toggle/physically lock
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) // C99
PORT_START("KBD2") // Row P1-6
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') // B01
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') // C01
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') // D01
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') // E01
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Tilde") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~') // E00
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED ) // D99, exists but no key above this position
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) // E99, exists but no key above this position
PORT_START("KBD3") // Row P1-7
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("<") PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('<') PORT_CHAR('>') // B00
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') // B02
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') // C02
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') // D02
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(TAB)) // D00
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') // E02
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Hold Screen (F1)") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) // G99
PORT_START("KBD4") // Row P1-9
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') // B03
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') // C03
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') // D03
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') // E03
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Setup (F3)") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) // G01
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Print Screen (F2)") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) // G00
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD5") // Row P1-11
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') // A04 and A06
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') // B04
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') // C04
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') // D04
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') // E04
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Break (F5)") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) // G03
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Data / Talk (F4)") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) // G02
PORT_START("KBD6") // Row P2-2
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') // B05
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') // C05
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') // D05
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') // E05
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Interrupt (F6) [X]") PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6)) // G05
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED ) // G04, exists but no key above this position (between F5 and F6)
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD7") // Row P2-3
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') // B06
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') // C06
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') // D06
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') // E06
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Resume (F7) [Fortsetzen]") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) // G06
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Cancel (F8) [Zuruecknehmen]") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8)) // G07
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD8") // Row P2-4
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') // B07
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') // C07
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') // D07
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') // E07
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Exit (F10) [Fertig]") PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10)) // G09
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Main Screen (F9) [Hauptbild]") PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9)) // G08
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD9") // Row P2-6
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') // B08
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') // C08
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') // D08
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') // E08
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) // G10, exists but no key above this position (between F10 and F11)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("ESC (F11)") PORT_CODE(KEYCODE_F11) PORT_CHAR(UCHAR_MAMEKEY(F11)) // G11
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD10") // Row P2-9
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(".") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') // B09
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') // C09
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') // D09
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') // E09
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LF (F13)") PORT_CODE(KEYCODE_F13) // G13
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("BS (F12)") PORT_CODE(KEYCODE_F12) PORT_CHAR(UCHAR_MAMEKEY(F12)) // G12
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START("KBD11") // Row P2-10
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') // B10
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(";") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') // C10
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED ) // D13, exists but no key(?) above this position (under the upper half of the 'Return' key), DOES register as return; NOT LISTED on older schematic but definitely appears on the physical membrane of the later 6805 keyboard!
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') // D10
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') // E10
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Delete <X") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) // E13
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Additional Options (F14) [Zusaetze]") PORT_CODE(KEYCODE_PRTSCR) PORT_CHAR(UCHAR_MAMEKEY(PRTSCR)) // G14
PORT_START("KBD12") // Row P2-11
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("\\") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') // C12
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) // B16
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) // C13
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("]") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') // D12
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Select") PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(END)) // D16
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Help (F15)") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(RALT)) // G15
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("=") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') // E12
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Find") PORT_CODE(KEYCODE_INSERT) PORT_CHAR(UCHAR_MAMEKEY(HOME)) // E16
PORT_START("KBD13") // Row P3-2
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED ) // A17, exists but no key above this position (below the 'Down Arrow')
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED ) // B13, exists but no key above this position (right of right shift, 'whoami' or 'linefeed' key on decwriter?)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("'") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') // C11
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("[") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') // D11
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Previous [^]") PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(PGUP)) // D17
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Do (F16) [Ausfuehren]") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL)) // G16
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') // E11
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Insert Here") PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) // E17
PORT_START("KBD14") // Row P3-4
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) // A20
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) // B20
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) // C20
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) // D20
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) // C17
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Remove") PORT_CODE(KEYCODE_PGUP) PORT_CHAR(UCHAR_MAMEKEY(DEL)) // E18
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Next [v]") PORT_CODE(KEYCODE_PGDN) PORT_CHAR(UCHAR_MAMEKEY(PGDN)) // D18
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF1") PORT_CODE(KEYCODE_NUMLOCK) PORT_CHAR(UCHAR_MAMEKEY(NUMLOCK)) // E20
PORT_START("KBD15") // Row P3-5
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) // A21, exists AND WORKS (as '0') but no key above this position (under right side of 'Keypad 0' key, maybe intended as a '00' key,)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) // B21
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) // B18
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) // C21
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) // D21
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF2") PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR(UCHAR_MAMEKEY(SLASH_PAD)) // E21
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F17") // G20
PORT_START("KBD16") // Row P3-6
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num .") PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) // A22
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) // B22
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) // C22
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) // B17
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) // D22
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF3") PORT_CODE(KEYCODE_ASTERISK) // E22
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F18") // G21
PORT_START("KBD17") // Row P3-9
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) // A23
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num ,") PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(PLUS_PAD)) // C23
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Num -") // D23
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PF4") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD)) // E23
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F20") // G23
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("F19") // G22
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor lk201_device::device_input_ports() const
{
return INPUT_PORTS_NAME( lk201 );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// lk201_device - constructor
//-------------------------------------------------
lk201_device::lk201_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, LK201, tag, owner, clock),
device_serial_interface(mconfig, *this),
m_maincpu(*this, LK201_CPU_TAG),
m_speaker(*this, LK201_SPK_TAG),
m_kbd(*this, "KBD%u", 0U),
m_led_wait(*this, "led_wait"),
m_led_compose(*this, "led_compose"),
m_led_lock(*this, "led_lock"),
m_led_hold(*this, "led_hold"),
m_tx_handler(*this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void lk201_device::device_start()
{
m_count = timer_alloc(1);
m_tx_handler.resolve_safe();
m_beeper = timer_alloc(2);
m_led_wait.resolve();
m_led_compose.resolve();
m_led_lock.resolve();
m_led_hold.resolve();
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void lk201_device::device_reset()
{
m_beeper->adjust(attotime::never);
m_speaker->set_state(0);
m_speaker->set_output_gain(0, 0);
ddrs[0] = ddrs[1] = ddrs[2] = 0;
ports[0] = ports[1] = ports[2] = 0;
set_data_frame(1, 8, PARITY_NONE, STOP_BITS_1);
set_rate(4800);
m_count->adjust(attotime::from_hz(1200), 0, attotime::from_hz(1200));
memset(m_timer.regs, 0, sizeof(m_timer.regs));
sci_status = (SCSR_TC | SCSR_TDRE);
spi_status = 0;
spi_data = 0;
kbd_data = 0;
led_data = 0;
transmit_register_reset();
receive_register_reset();
// GREEN KEYBOARD LEDs (1 = on, 0 = off):
m_led_wait = 0; // led8
m_led_compose = 0; // led9
m_led_lock = 0; // led10
m_led_hold = 0; // led11
}
void lk201_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case 1:
m_timer.tsr |= TSR_OCFL;
if ((m_timer.tcr & TCR_OCIE) && (m_timer.tsr & TSR_OCFL))
m_maincpu->set_input_line(M68HC05EG_INT_TIMER, ASSERT_LINE);
break;
case 2:
m_speaker->set_output_gain(0, 0);
m_speaker->set_state(0);
break;
default:
break;
}
}
void lk201_device::rcv_complete()
{
sci_status |= SCSR_RDRF;
update_interrupts();
receive_register_extract();
int data = get_received_char();
m_kbd_state = data;
// printf("\nlk201 got %02x\n", m_kbd_state);
}
void lk201_device::tra_complete()
{
sci_status |= (SCSR_TC | SCSR_TDRE);
update_interrupts();
}
void lk201_device::tra_callback()
{
m_tx_handler(transmit_register_get_data_bit());
}
void lk201_device::update_interrupts()
{
if (sci_ctl2 & sci_status & SCSR_INT)
{
m_maincpu->set_input_line(M68HC05EG_INT_CPI, 1);
}
else
{
m_maincpu->set_input_line(M68HC05EG_INT_CPI, 0);
}
}
uint8_t lk201_device::timer_r(offs_t offset)
{
static uint16_t count;
uint8_t ret = m_timer.regs[offset];
switch (offset)
{
case 8: // ACRH (high value is stored and reused when reading low)
count = (m_maincpu->total_cycles() / 4) & 0x0000ffff;
ret = count >> 8;
break;
case 9: // ACRL
ret = count & 0x00ff;
break;
}
if(m_timer.tsr)
{
m_timer.tsr = 0;
m_maincpu->set_input_line(M68HC05EG_INT_TIMER, CLEAR_LINE);
}
return ret;
}
void lk201_device::timer_w(offs_t offset, uint8_t data)
{
static uint16_t count;
static int save_tsr;
m_timer.regs[offset] = data;
switch (offset)
{
case 4: // OCRH
save_tsr = m_timer.tsr; // prevent crashes in between OCRH / OCRL loads
m_timer.tsr &= (255-TSR_OCFL); // OCFL flag tested for zero in TIMER routine
count = m_timer.ocrh << 8; // store for later (when LOW is written).
break;
case 5 : // OCRL
count |= m_timer.ocrl;
m_timer.ocrh = count >> 8;
m_timer.tsr = save_tsr; // restore flags
break;
}
}
uint8_t lk201_device::ddr_r(offs_t offset)
{
return ddrs[offset];
}
void lk201_device::ddr_w(offs_t offset, uint8_t data)
{
// printf("%02x to PORT %c DDR (PC=%x)\n", data, 'A' + offset, m_maincpu->pc());
uint8_t olddata = ddrs[offset];
ddrs[offset] = data;
send_port(offset, ports[offset] & olddata);
}
uint8_t lk201_device::ports_r(offs_t offset)
{
uint8_t incoming = 0;
// apply data direction registers
incoming &= (ddrs[offset] ^ 0xff);
// add in ddr-masked version of port writes
incoming |= (ports[offset] & ddrs[offset]);
// printf("PORT %c read = %02x (DDR = %02x latch = %02x) (PC=%x)\n", 'A' + offset, ports[offset], ddrs[offset], ports[offset], m_maincpu->pc());
return incoming;
}
void lk201_device::ports_w(offs_t offset, uint8_t data)
{
uint8_t olddata = ports[offset];
ports[offset] = data; // "port writes are independent of DDRC"
send_port(offset, olddata & ddrs[offset]);
// printf("\nPORT %c write %02x (OLD = %02x) (DDR = %02x) (PC=%x)\n", 'A' + offset, data, olddata, ddrs[offset], m_maincpu->pc());
}
void lk201_device::send_port(uint8_t offset, uint8_t olddata)
{
uint8_t porta = ports[0] & ddrs[0];
uint8_t portb = ports[1] & ddrs[1];
uint8_t portc = ports[2] & ddrs[2];
switch (offset)
{
case 0: // port A
break;
case 1: // port B
break;
case 2: // port C
// Check for keyboard read strobe
if (((portc & 0x40) == 0) && (olddata & 0x40))
{
if (porta & 0x1) kbd_data = m_kbd[0]->read();
if (porta & 0x2) kbd_data = m_kbd[1]->read();
if (porta & 0x4) kbd_data = m_kbd[2]->read();
if (porta & 0x8) kbd_data = m_kbd[3]->read();
if (porta & 0x10) kbd_data = m_kbd[4]->read();
if (porta & 0x20) kbd_data = m_kbd[5]->read();
if (porta & 0x40) kbd_data = m_kbd[6]->read();
if (porta & 0x80) kbd_data = m_kbd[7]->read();
if (portb & 0x1) kbd_data = m_kbd[8]->read();
if (portb & 0x2) kbd_data = m_kbd[9]->read();
if (portb & 0x4) kbd_data = m_kbd[10]->read();
if (portb & 0x8) kbd_data = m_kbd[11]->read();
if (portb & 0x10) kbd_data = m_kbd[12]->read();
if (portb & 0x20) kbd_data = m_kbd[13]->read();
if (portb & 0x40) kbd_data = m_kbd[14]->read();
if (portb & 0x80) kbd_data = m_kbd[15]->read();
if (portc & 0x1) kbd_data = m_kbd[16]->read();
if (portc & 0x2) kbd_data = m_kbd[17]->read();
}
// Check for LED update strobe
if (((portc & 0x80) == 0) && (olddata & 0x80))
{
if(ddrs[2] != 0x00)
{ // Lower nibble contains the LED values (1 = on, 0 = off)
m_led_wait = (led_data & 0x1) == 1;
m_led_compose= (led_data & 0x2) == 2;
m_led_lock = (led_data & 0x4) == 4;
m_led_hold = (led_data & 0x8) == 8;
}
if (led_data & 0xf0)
{
m_speaker->set_state(1);
// Beeps < 20 ms are clipped. A key click on a LK201 lasts 2 ms...
if(m_kbd_state == LK_CMD_BELL)
m_beeper->adjust(attotime::from_msec(125));
else
m_beeper->adjust(attotime::from_msec(25)); // see note
}
// Upper 4 bits of LED_DATA contain encoded volume info
switch (led_data & 0xf0)
{
case 0xf0: // 8 - (see TABLE 4 in 68HC05xx ROM)
m_speaker->set_output_gain(0, 100.0f);
break;
case 0xd0: // 7
m_speaker->set_output_gain(0, (100 - (12 * 1)) / 100.0f);
break;
case 0xc0: // 6
m_speaker->set_output_gain(0, (100 - (12 * 2)) / 100.0f);
break;
case 0x60: // 5
m_speaker->set_output_gain(0, (100 - (12 * 3)) / 100.0f);
break;
case 0xb0: // 4
m_speaker->set_output_gain(0, (100 - (12 * 4)) / 100.0f);
break;
case 0xa0: // 3
m_speaker->set_output_gain(0, (100 - (12 * 5)) / 100.0f);
break;
case 0x30: // 2
m_speaker->set_output_gain(0, (100 - (12 * 6)) / 100.0f);
break;
case 0x90: // 1
m_speaker->set_output_gain(0, (100 - (12 * 7)) / 100.0f);
break;
default:
;
} // switch (volume)
} // if (update_strobe)
} // outer switch
}
uint8_t lk201_device::sci_r(offs_t offset)
{
uint8_t incoming = 0;
switch (offset)
{
case SCI_BAUD: // Baud rate
break;
case SCI_SCCR1: // Control 1
break;
case SCI_SCCR2: // Control 2
incoming = sci_ctl2;
break;
case SCI_SCSR: // Status
incoming = sci_status;
break;
case SCI_SCDR: // Data
incoming = get_received_char();
sci_status &= ~SCSR_RDRF;
m_maincpu->set_input_line(M68HC05EG_INT_CPI, 0);
update_interrupts();
break;
}
// printf("SCI read @ %x = %02x (PC=%x)\n", offset, incoming, m_maincpu->pc());
return incoming;
}
void lk201_device::sci_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case SCI_BAUD: // Baud rate
break;
case SCI_SCCR1: // Control 1
break;
case SCI_SCCR2: // Control 2
sci_ctl2 = data;
update_interrupts();
break;
case SCI_SCSR: // Status
break;
case SCI_SCDR: // Data
// printf("LK201: sending %02x\n", data);
transmit_register_setup(data);
sci_status &= ~(SCSR_TC | SCSR_TDRE);
m_maincpu->set_input_line(M68HC05EG_INT_CPI, 0);
update_interrupts();
break;
}
// printf("SCI %02x to %x (PC=%x)\n", data, offset, m_maincpu->pc());
}
uint8_t lk201_device::spi_r(offs_t offset)
{
uint8_t incoming = 0;
switch (offset)
{
case SPI_SPCR: // Control
break;
case SPI_SPSR: // Status
incoming = spi_status;
spi_status &= ~SPSR_SPIF;
break;
case SPI_SPDR: // Data I/O
incoming = spi_data;
break;
}
// printf("SPI read @ %x = %02x (PC=%x)\n", offset, incoming, m_maincpu->pc());
return incoming;
}
void lk201_device::spi_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case SPI_SPCR: // Control
break;
case SPI_SPSR: // Status (read only)
break;
case SPI_SPDR: // Data I/O
spi_data = data;
// Transfer only allowed if transfer complete flag has been acknowleged
if ((spi_status & SPSR_SPIF) == 0)
{
// Data out
led_data = data;
// Data in
spi_data = kbd_data;
// Indicate transfer complete
spi_status |= SPSR_SPIF;
}
break;
}
// printf("SPI %02x to %x (PC=%x)\n", data, offset, m_maincpu->pc());
}