inline void c2040_device::micropolis_step_motor(int unit, int stp)
{
if (!m_unit[unit].m_mtr && (m_unit[unit].m_stp != stp))
{
int tracks = 0;
switch (m_unit[unit].m_stp)
{
case 0: if (stp == 1) tracks++; else if (stp == 3) tracks--; break;
case 1: if (stp == 2) tracks++; else if (stp == 0) tracks--; break;
case 2: if (stp == 3) tracks++; else if (stp == 1) tracks--; break;
case 3: if (stp == 0) tracks++; else if (stp == 2) tracks--; break;
}
if (tracks != 0)
{
// step read/write head
floppy_drive_seek(m_unit[unit].m_image, tracks);
// read new track data
read_current_track(unit);
}
m_unit[unit].m_stp = stp;
}
}
inline void c2040_device::spindle_motor(int unit, int mtr)
{
if (m_unit[unit].m_mtr != mtr)
{
if (!mtr)
{
// read track data
read_current_track(unit);
}
floppy_mon_w(m_unit[unit].m_image, mtr);
m_unit[unit].m_mtr = mtr;
}
}
static void spindle_motor(c1551_t *c1551, int mtr)
{
if (c1551->mtr != mtr)
{
if (mtr)
{
/* read track data */
read_current_track(c1551);
}
floppy_mon_w(c1551->image, !mtr);
c1551->bit_timer->enable(mtr);
c1551->mtr = mtr;
}
}
static void on_disk_change(device_image_interface &image)
{
c1551_t *c1551 = get_safe_token(image.device().owner());
read_current_track(c1551);
}
