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fscc9ps: correct cpu speed

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This commit is contained in:
hap 2021-05-15 20:50:24 +02:00
parent c3ebd9ebb2
commit af35c80121
3 changed files with 17 additions and 6 deletions
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16
src/mame/drivers/fidel_sc9.cpp
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@ -3,6 +3,15 @@
// thanks-to:Berger, yoyo_chessboard
/******************************************************************************
Fidelity SC9, Fidelity Playmatic "S"
TODO:
- fscc9ps module switch and led
- verify fscc9ps XTAL (checked against sound recording, 99.97% similarity)
Hardware notes:
Fidelity Sensory Chess Challenger "9" (SC9) overview:
- 8*(8+1) buttons, 8*8+1 LEDs
- 36-pin edge connector, assume same as SC12
@ -19,12 +28,13 @@ I/O is via TTL, not further documented here
The Playmatic S was only released in Germany, it's basically a 'deluxe' version of SC9
with magnet sensors and came with CB9 and CB16.
Starting with SC9, Fidelity added a cartridge slot to their chess computers, meant for
extra book opening databases and recorded games.
Known modules (*denotes undumped):
- CB9: Challenger Book Openings 1 - 8KB (label not known)
- CB16: Challenger Book Openings 2 - 8+8KB 101-1042A01,02
- CB16: Challenger Book Openings 2 - 2*8KB 101-1042A01,101-1042A02
- *CG64: 64 Greatest Games
- *EOA-EOE: Challenger Book Openings: Chess Encyclopedia Volume A-E (5 modules)
- *TDF: Challenger Book Openings: Tarrasch Defense to the Queen's Gambit
@ -256,7 +266,7 @@ INPUT_PORTS_END
void sc9_state::sc9d(machine_config &config)
{
/* basic machine hardware */
M6502(config, m_maincpu, 3.9_MHz_XTAL/2); // R6502AP, 3.9MHz resonator
M6502(config, m_maincpu, 3.9_MHz_XTAL / 2); // R6502AP, 3.9MHz resonator
m_maincpu->set_addrmap(AS_PROGRAM, &sc9_state::sc9d_map);
const attotime irq_period = attotime::from_hz(600); // from 555 timer (22nF, 102K, 2.7K), ideal frequency is 600Hz
@ -295,7 +305,7 @@ void sc9_state::playmatic(machine_config &config)
sc9b(config);
/* basic machine hardware */
m_maincpu->set_clock(1500000 * 2); // advertised as double the speed of SC9
m_maincpu->set_clock(5.626_MHz_XTAL / 2); // advertised as double the speed of SC9
m_board->set_type(sensorboard_device::MAGNETS);
config.set_default_layout(layout_fidel_playmatic);

4
src/mame/drivers/mephisto_modular.cpp
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@ -44,8 +44,8 @@ Undocumented buttons:
TODO:
- match I/S= diag speed test with real hardware (good test for proper waitstates)
- gen32 waitstates emulation is preliminary (without it, sound pitch is too high
and lcd write speed too fast)
- gen32 waitstates emulation is preliminary (without it, sound pitch is way too high
and lcd write speed too fast). Real gen32 sound is a bit lower pitched than MAME.
===============================================================================

3
src/mame/drivers/mephisto_risc.cpp
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@ -5,7 +5,8 @@
Mephisto Risc 1MB/II (stylized "risc")
The chess engine in Mephisto Risc is also compatible with Tasc's The ChessMachine,
see ROM defs for details.
see ROM defs for details. "Main" CPU is slow, but all the chess calculations are
done with the ARM.
Hardware notes:
- G65SC02P-4 @ 2.5MHz