Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 10:13:37 +03:00
Code Issues Actions 29 Packages Projects Releases Wiki Activity

port changed regression fix (no whatsnew)

Browse Source
This commit is contained in:
Miodrag Milanovic 2012-05-16 07:24:41 +00:00
parent c40f1ad464
commit f182f80a1d
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/emu/ioport.c
View File

@ -251,6 +251,7 @@ public:
// read/write
void read(ioport_value &result);
void write(ioport_value newval);
void port_changed_write(ioport_value newval);
private:
// internal state
@ -2479,7 +2480,7 @@ void ioport_port::frame_update(ioport_field *mouse_field)
ioport_value newvalue = read();
for (dynamic_field *dynfield = m_live->writelist.first(); dynfield != NULL; dynfield = dynfield->next())
if (dynfield->field().type() != IPT_OUTPUT)
dynfield->write(newvalue);
dynfield->port_changed_write(newvalue);
}
@ -4005,6 +4006,27 @@ void dynamic_field::write(ioport_value newval)
}
//-------------------------------------------------
// port_changed_write - track a change to a value
// of port changed and call the write callback
// if there's something new
//-------------------------------------------------
void dynamic_field::port_changed_write(ioport_value newval)
{
// skip if not enabled
if (!m_field.enabled())
return;
// if the bits have changed, call the handler
newval = (newval & m_field.mask()) >> m_shift;
if (m_oldval != newval)
{
m_field.m_write(m_field, m_field.m_write_param, m_oldval, newval);
m_oldval = newval;
}
}
//-------------------------------------------------
// analog_field - constructor
//-------------------------------------------------