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(nw) spc1000 : small cleanup

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This commit is contained in:
Robbbert 2019-06-02 22:58:14 +10:00
parent 6deb0d35e3
commit 86aa2b6949
1 changed files with 9 additions and 15 deletions
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24
src/mame/drivers/spc1000.cpp
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@ -4,25 +4,18 @@
Samsung SPC-1000 driver by Miodrag Milanovic Samsung SPC-1000 driver by Miodrag Milanovic
2009-05-10 Preliminary driver. 2009-05-10 Preliminary driver.
2014-02-16 Added cassette, many games are playable 2014-02-16 Added cassette, many games are playable
ToDo: ToDo:
- Find out if any of the unconnected parts of 6000,4000,4001 are used - Find out if any of the unconnected parts of 6000,4000,4001 are used
NOTE: 2014-09-13: added code from someone's modified MESS driver for floppy Hardware details of the fdc: Intelligent device, Z80 CPU,
disk. Since it is not to our coding standards, it is XTAL(8'000'000), PPI 8255, FDC uPD765C, 2 RAM chips, 28 other
commented out with #if 0/#endif and 3 slashes (///). small ics.
It is planned to be converted when time permits. The
author is Miso Kim.
Hardware details of the fdc: Intelligent device, Z80 CPU, 2014-10-11: Added code for the floppy disk [Meeso Kim]
XTAL(8'000'000), PPI 8255, FDC uPD765C, 2 RAM chips, 28 other
small ics. And of course, no schematic.
2014-10-11: Replaced above code with MESS-compliant code [Meeso Kim]
2015-06-19: Added code for the centronics printer port 2015-06-19: Added code for the centronics printer port
@ -229,7 +222,8 @@ WRITE8_MEMBER( spc1000_state::cass_w )
{ {
attotime time = machine().scheduler().time(); attotime time = machine().scheduler().time();
m_cass->output(BIT(data, 0) ? -1.0 : 1.0); m_cass->output(BIT(data, 0) ? -1.0 : 1.0);
if (BIT(data, 1) && (time - m_time).as_attoseconds()/ATTOSECONDS_PER_MICROSECOND > 100) { if (BIT(data, 1) && (time - m_time).as_attoseconds()/ATTOSECONDS_PER_MICROSECOND > 100)
{
m_cass->change_state((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); m_cass->change_state((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_time = time; m_time = time;
} }
@ -410,7 +404,7 @@ void spc1000_state::machine_start()
membank("bank2")->set_base(ram); membank("bank2")->set_base(ram);
membank("bank4")->set_base(ram + 0x8000); membank("bank4")->set_base(ram + 0x8000);
m_time = machine().scheduler().time(); m_time = machine().scheduler().time();
} }
void spc1000_state::machine_reset() void spc1000_state::machine_reset()