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cp2000: higher cpu clock (nw)

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This commit is contained in:
hap 2020-04-02 22:41:09 +02:00
parent 120977e04f
commit 72b45cbb01
2 changed files with 15 additions and 6 deletions
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8
src/mame/drivers/compuchess.cpp
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@ -368,18 +368,20 @@ void cmpchess_state::mk1(machine_config &config)
cmpchess(config);
/* basic machine hardware */
m_maincpu->set_clock(2000000); // JS&A version measured 2.18MHz on average
subdevice<f3853_device>("smi")->set_clock(2000000);
m_maincpu->set_clock(2200000); // JS&A version measured 2.18MHz on average
subdevice<f3853_device>("smi")->set_clock(2200000);
config.set_default_layout(layout_novag_mk1);
}
void cmpchess_state::cnc(machine_config &config)
{
mk1(config);
cmpchess(config);
/* basic machine hardware */
m_maincpu->set_addrmap(AS_IO, &cmpchess_state::cnc_io);
m_maincpu->set_clock(2000000); // LC circuit, measured 2MHz
subdevice<f3853_device>("smi")->set_clock(2000000);
config.set_default_layout(layout_cncchess);

13
src/mame/drivers/saitek_cp2000.cpp
View File

@ -6,10 +6,17 @@
SciSys Chess Partner 2000, also sold by Novag with the same name.
It's probably the last SciSys / Novag collaboration.
- 3850PK CPU at ~2MHz, 3853PK memory interface
Hardware notes:
- 3850PK CPU at ~2.8MHz, 3853PK memory interface
- 4KB ROM, 256 bytes RAM(2*2111N)
- 4-digit 7seg panel, sensory chessboard
3850 is officially rated 2MHz, and even the CP2000 manual says it runs at 2MHz,
but tests show that the chesscomputer runs at a much higher speed. Three individual
CP2000 were measured, by timing move calculation, and one recording to verify
beeper pitch and display blinking rate. Real CP2000 CPU frequency is in the
2.63MHz to 2.91MHz range.
Entering moves is not as friendly as newer sensory games. The player is expected
to press ENTER after their own move, but if they (accidentally) press it after
doing the computer's move, the computer takes your turn.
@ -213,12 +220,12 @@ INPUT_PORTS_END
void cp2000_state::cp2000(machine_config &config)
{
/* basic machine hardware */
F8(config, m_maincpu, 2000000);
F8(config, m_maincpu, 2800000); // see driver notes
m_maincpu->set_addrmap(AS_PROGRAM, &cp2000_state::main_map);
m_maincpu->set_addrmap(AS_IO, &cp2000_state::main_io);
m_maincpu->set_irq_acknowledge_callback("f3853", FUNC(f3853_device::int_acknowledge));
f3853_device &f3853(F3853(config, "f3853", 2000000));
f3853_device &f3853(F3853(config, "f3853", 2800000));
f3853.int_req_callback().set_inputline("maincpu", F8_INPUT_LINE_INT_REQ);
SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS);