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mg1: replace timer with clock, fix typo

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This commit is contained in:
Patrick Mackinlay 2022-11-04 08:44:53 +07:00
parent e9c69b54f6
commit 313f019fe2
1 changed files with 4 additions and 5 deletions
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9
src/mame/mg1/mg1.cpp
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@ -31,7 +31,7 @@
#include "machine/wd_fdc.h"
//#include "machine/upd7261.h"
#include "machine/mm58174.h"
#include "machine/timer.h"
#include "machine/clock.h"
// buses and connectors
#include "bus/rs232/rs232.h"
@ -100,7 +100,6 @@ protected:
private:
MC6845_UPDATE_ROW(update_row);
TIMER_DEVICE_CALLBACK_MEMBER(kbd_clock) { m_iop->m6801_clock_serial(); }
static void floppy_formats(format_registration &fr);
@ -434,11 +433,11 @@ void mg1_state::mg1(machine_config &config)
/*
* Documentation indicates the serial clock for the IOP should be driven by the keyboard, however the available
* keyboard firmware does not produce a compatible clock output. A hand-drawn sketch indicates the system front
* panel allows the serial clock to be generated by a 2.4676MHz crystal and a 4016 divider. The default strapping
* panel allows the serial clock to be generated by a 2.4676MHz crystal and a 4060 divider. The default strapping
* selects a 256 divisor, giving a 9600Hz clock which after the 8x divider in the IOP gives a 1200 baud data rate.
*/
timer_device &kbd_clk(TIMER(config, "kbd_clock"));
kbd_clk.configure_periodic(FUNC(mg1_state::kbd_clock), attotime::from_ticks(256, 2.4576_MHz_XTAL));
clock_device &kbd_clk(CLOCK(config, "kbd_clock", 2.4576_MHz_XTAL / 256));
kbd_clk.signal_handler().set([this](int state) { if (state) m_iop->m6801_clock_serial(); });
//SOFTWARE_LIST(config, "flop_list").set_original("mg1_flop");
//SOFTWARE_LIST(config, "hdd_list").set_original("mg1_hdd");