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Expand read_line to all 0s or all 1s; fixes cases where read_line

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(specifically vblank) callbacks are mapped to multiple bits.
This commit is contained in:
Aaron Giles 2013-07-20 22:06:49 +00:00
parent 286cfe8b08
commit df346d7397
1 changed files with 2 additions and 2 deletions
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4
src/emu/ioport.h
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@ -1664,13 +1664,13 @@ ATTR_COLD void INPUT_PORTS_NAME(_name)(device_t &owner, ioport_list &portlist, a
template<int (*_FunctionPointer)(device_t *)> template<int (*_FunctionPointer)(device_t *)>
ioport_value ioport_read_line_wrapper(device_t &device, ioport_field &field, void *param) ioport_value ioport_read_line_wrapper(device_t &device, ioport_field &field, void *param)
{ {
return (*_FunctionPointer)(&device); return ((*_FunctionPointer)(&device) & 1) ? ~ioport_value(0) : 0;
} }
template<class _FunctionClass, int (_FunctionClass::*_FunctionPointer)()> template<class _FunctionClass, int (_FunctionClass::*_FunctionPointer)()>
ioport_value ioport_read_line_wrapper(_FunctionClass &device, ioport_field &field, void *param) ioport_value ioport_read_line_wrapper(_FunctionClass &device, ioport_field &field, void *param)
{ {
return (device.*_FunctionPointer)(); return ((device.*_FunctionPointer)() & 1) ? ~ioport_value(0) : 0;
} }
template<void (*_FunctionPointer)(device_t *, int)> template<void (*_FunctionPointer)(device_t *, int)>