static DISCRETE_STEP(dss_adjustment)
{
struct dss_adjustment_context *context = (struct dss_adjustment_context *)node->context;
INT32 rawportval = input_port_read_direct(context->port);
/* only recompute if the value changed from last time */
if (UNEXPECTED(rawportval != context->lastpval))
{
double portval = (double)(rawportval - context->pmin) * context->pscale;
double scaledval = portval * context->scale + context->min;
context->lastpval = rawportval;
if (DSS_ADJUSTMENT__LOG == 0)
node->output[0] = scaledval;
else
node->output[0] = pow(10, scaledval);
}
}
UINT16 devcb_resolved_read16::from_port(offs_t offset, UINT16 mask)
{
return input_port_read_direct(m_object.port);
}
UINT8 devcb_resolved_read8::from_port(offs_t offset)
{
return input_port_read_direct(m_object.port);
}
int devcb_resolved_read_line::from_port()
{
return (input_port_read_direct(m_object.port) & 1) ? ASSERT_LINE : CLEAR_LINE;
}
static READ_LINE_DEVICE_HANDLER( trampoline_read_port_to_read_line )
{
return (input_port_read_direct((const input_port_config *)device) & 1) ? ASSERT_LINE : CLEAR_LINE;
}
static READ8_DEVICE_HANDLER( trampoline_read_port_to_read8 )
{
return input_port_read_direct((const input_port_config *)device);
}
