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upd765: Drive selection improvements

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- Deselect drives upon reset, or select drive 0 for older FDCs with multiplexed select lines
- Deselect other floppies when using set_floppy
This commit is contained in:
AJR 2019-04-13 17:26:46 -04:00
parent 6ed04fe619
commit 67daf8d43a
2 changed files with 16 additions and 3 deletions
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17
src/devices/machine/upd765.cpp
View File

@ -175,6 +175,7 @@ upd765_family_device::upd765_family_device(const machine_config &mconfig, device
ready_polled = true;
ready_connected = true;
select_connected = true;
select_multiplexed = true;
external_ready = false;
dor_reset = 0x00;
mode = MODE_AT;
@ -295,7 +296,8 @@ void upd765_family_device::soft_reset()
cur_live.fi = nullptr;
tc_done = false;
st1 = st2 = st3 = 0x00;
selected_drive = -1;
set_ds(select_multiplexed ? 0 : -1);
check_irq();
if(ready_polled)
@ -345,8 +347,11 @@ void upd765_family_device::set_ds(int fid)
void upd765_family_device::set_floppy(floppy_image_device *flop)
{
for(floppy_info & elem : flopi) {
if(elem.dev)
if(elem.dev) {
elem.dev->setup_index_pulse_cb(floppy_image_device::index_pulse_cb());
if(elem.dev != flop)
elem.dev->ds_w(-1);
}
elem.dev = flop;
}
if(flop)
@ -2914,12 +2919,14 @@ smc37c78_device::smc37c78_device(const machine_config &mconfig, const char *tag,
{
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
n82077aa_device::n82077aa_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : upd765_family_device(mconfig, N82077AA, tag, owner, clock)
{
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
pc_fdc_superio_device::pc_fdc_superio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : upd765_family_device(mconfig, PC_FDC_SUPERIO, tag, owner, clock)
@ -2927,6 +2934,7 @@ pc_fdc_superio_device::pc_fdc_superio_device(const machine_config &mconfig, cons
ready_polled = false;
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
dp8473_device::dp8473_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : upd765_family_device(mconfig, DP8473, tag, owner, clock)
@ -2934,6 +2942,7 @@ dp8473_device::dp8473_device(const machine_config &mconfig, const char *tag, dev
ready_polled = false;
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
pc8477a_device::pc8477a_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : upd765_family_device(mconfig, PC8477A, tag, owner, clock)
@ -2941,6 +2950,7 @@ pc8477a_device::pc8477a_device(const machine_config &mconfig, const char *tag, d
ready_polled = true;
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
wd37c65c_device::wd37c65c_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : upd765_family_device(mconfig, WD37C65C, tag, owner, clock)
@ -2948,6 +2958,7 @@ wd37c65c_device::wd37c65c_device(const machine_config &mconfig, const char *tag,
ready_polled = true;
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
mcs3201_device::mcs3201_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
@ -2958,6 +2969,7 @@ mcs3201_device::mcs3201_device(const machine_config &mconfig, const char *tag, d
ready_polled = false;
ready_connected = false;
select_connected = true;
select_multiplexed = false;
}
void mcs3201_device::device_start()
@ -2978,6 +2990,7 @@ tc8566af_device::tc8566af_device(const machine_config &mconfig, const char *tag,
ready_polled = true;
ready_connected = true;
select_connected = true;
select_multiplexed = false;
}
void tc8566af_device::device_start()

2
src/devices/machine/upd765.h
View File

@ -257,7 +257,7 @@ protected:
static constexpr int rates[4] = { 500000, 300000, 250000, 1000000 };
bool ready_connected, ready_polled, select_connected;
bool ready_connected, ready_polled, select_connected, select_multiplexed;
bool external_ready;