Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 00:39:36 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

chessmate: update notes, correct dac type and fix lose led

Browse Source
This commit is contained in:
hap 2024-08-17 14:52:38 +02:00
parent 5af599de01
commit 88a92d9357
2 changed files with 43 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
src/mame/commodore/chessmate.cpp
View File

@ -2,15 +2,19 @@
// copyright-holders:Peter Trauner, hap
/*******************************************************************************
Commodore Chessmate / Novag Chess Champion MK II
Commodore Chessmate (stylized as CHESSmate) / Novag Chess Champion MK II
Initial driver version by PeT mess@utanet.at September 2000.
Driver mostly rewritten later.
The hardware is pretty similar to KIM-1. In fact, the chess engine is Peter
R. Jennings's Microchess, originally made for the KIM-1. Jennings went on to
co-found Personal Software (later named VisiCorp, known for VisiCalc).
The hardware is pretty similar to KIM-1. In fact, the chess engine is an improved
version of Peter R. Jennings's Microchess, originally made for the KIM-1. Jennings
went on to co-found Personal Software (later named VisiCorp, known for VisiCalc).
Jennings also licensed Chessmate to Novag, and they released it as the MK II.
It was planned to be called "Bobby", pending Bobby Fischer's approval. Although
the program was stronger than most other chess computers at the time, Fischer
declined the idea after trying out the prototype.
Commodore also licensed Chessmate to Novag, and they released it as the MK II.
The hardware is almost identical and the software is the same(identical ROM labels).
Two designs were made, one jukebox shape, and one brick shape. The one in MAME came
from the jukebox, but both models have the same ROMs.
@ -85,21 +89,20 @@ private:
required_device<cpu_device> m_maincpu;
required_device<mos6530_device> m_miot;
required_device<pwm_display_device> m_display;
required_device<dac_1bit_device> m_dac;
required_device<dac_2bit_ones_complement_device> m_dac;
optional_ioport_array<5> m_inputs;
u8 m_inp_mux = 0;
u8 m_7seg_data = 0;
u8 m_led_data = 0;
// address maps
void main_map(address_map &map);
// I/O handlers
void update_display();
void control_w(u8 data);
void digit_w(u8 data);
u8 input_r();
void digit_w(u8 data);
void control_w(u8 data);
};
void chmate_state::machine_start()
@ -112,7 +115,7 @@ void chmate_state::machine_start()
INPUT_CHANGED_MEMBER(chmate_state::reset_button)
{
// assume that NEW GAME button is tied to reset pin(s)
// NEW GAME button is tied to reset pin(s)
m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE);
if (newval)
m_miot->reset();
@ -128,34 +131,15 @@ INPUT_CHANGED_MEMBER(chmate_state::reset_button)
void chmate_state::update_display()
{
m_display->write_row(4, m_led_data);
m_display->matrix_partial(0, 4, 1 << m_inp_mux, m_7seg_data);
}
void chmate_state::control_w(u8 data)
{
// d0-d2: 74145 to input mux/digit select
m_inp_mux = data & 7;
// 74145 Q7: speaker out
m_dac->write(BIT(1 << m_inp_mux, 7) & ~m_inputs[4].read_safe(0));
// d3-d5: leds (direct)
m_led_data = data >> 3 & 7;
update_display();
}
void chmate_state::digit_w(u8 data)
{
m_7seg_data = data;
update_display();
m_display->write_row(4, m_led_data | (m_7seg_data >> 5 & 4));
}
u8 chmate_state::input_r()
{
u8 data = 0;
// multiplexed inputs (74145 Q4,Q5)
// PA0-PA6: multiplexed inputs (74145 Q4,Q5)
if (m_inp_mux == 4 || m_inp_mux == 5)
{
// note that number/letter buttons are electronically the same
@ -166,6 +150,28 @@ u8 chmate_state::input_r()
return ~data;
}
void chmate_state::digit_w(u8 data)
{
// PA0-PA6: digit segment data
// PA7: lose led
m_7seg_data = data;
update_display();
}
void chmate_state::control_w(u8 data)
{
// PB0-PB2: 74145 to input mux/digit select
m_inp_mux = data & 7;
// 74145 Q6,Q7: speaker out
bool sound_on = !m_inputs[4].read_safe(0);
m_dac->write(sound_on ? ((1 << m_inp_mux) >> 6) : 0);
// PB3,PB4: leds (direct)
m_led_data = data >> 3 & 3;
update_display();
}
/*******************************************************************************
@ -271,13 +277,13 @@ void chmate_state::chmate(machine_config &config)
m_miot->irq_wr_callback().set_inputline(m_maincpu, 0);
// video hardware
PWM_DISPLAY(config, m_display).set_size(4+1, 8);
m_display->set_segmask(0xf, 0xff);
PWM_DISPLAY(config, m_display).set_size(4+1, 7);
m_display->set_segmask(0xf, 0x7f);
config.set_default_layout(layout_chessmate);
// sound hardware
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
DAC_2BIT_ONES_COMPLEMENT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.125);
}
void chmate_state::mk2(machine_config &config)
@ -320,5 +326,5 @@ ROM_END
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS
SYST( 1978, chmate, 0, 0, chmate, chmate, chmate_state, empty_init, "Commodore", "Chessmate", MACHINE_SUPPORTS_SAVE )
SYST( 1979, ccmk2, chmate, 0, mk2, mk2, chmate_state, empty_init, "Novag Industries", "Chess Champion: MK II (ver. 1)", MACHINE_SUPPORTS_SAVE ) // 1st version (jukebox model), aka version B
SYST( 1979, ccmk2a, chmate, 0, mk2a, mk2a, chmate_state, empty_init, "Novag Industries", "Chess Champion: MK II (ver. 2)", MACHINE_SUPPORTS_SAVE )
SYST( 1979, ccmk2, chmate, 0, mk2, mk2, chmate_state, empty_init, "Commodore / Novag Industries", "Chess Champion: MK II (set 1)", MACHINE_SUPPORTS_SAVE ) // 1st version (jukebox model), aka version B
SYST( 1979, ccmk2a, chmate, 0, mk2a, mk2a, chmate_state, empty_init, "Commodore / Novag Industries", "Chess Champion: MK II (set 2)", MACHINE_SUPPORTS_SAVE )

2
src/mame/handheld/gmaster.cpp
View File

@ -173,7 +173,7 @@ void gmaster_state::main_map(address_map &map)
{
// 0x0000-0x0fff is internal ROM
map(0x4000, 0x47ff).mirror(0x3800).rw(FUNC(gmaster_state::io_r), FUNC(gmaster_state::io_w)).share("ram");
map(0x8000, 0xfeff).r("cartslot", FUNC(generic_slot_device::read_rom));
map(0x8000, 0xffff).r("cartslot", FUNC(generic_slot_device::read_rom));
// 0xff00-0xffff is internal RAM
}