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upd7810: For future use (nw)

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This commit is contained in:
AJR 2017-02-09 20:10:09 -05:00
parent 9ae0bf812b
commit 001175e111
2 changed files with 46 additions and 13 deletions
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53
src/devices/cpu/upd7810/upd7810.cpp
View File

@ -505,24 +505,49 @@ offs_t upd78c05_device::disasm_disassemble(std::ostream &stream, offs_t pc, cons
return CPU_DISASSEMBLE_NAME(upd78c05)(this, stream, pc, oprom, opram, options);
}
WRITE8_MEMBER(upd7810_device::pa_w)
{
COMBINE_DATA(&m_pa_in);
}
WRITE8_MEMBER(upd7810_device::pb_w)
{
COMBINE_DATA(&m_pb_in);
}
WRITE8_MEMBER(upd7810_device::pc_w)
{
COMBINE_DATA(&m_pc_in);
}
WRITE8_MEMBER(upd7810_device::pd_w)
{
COMBINE_DATA(&m_pd_in);
}
WRITE8_MEMBER(upd7810_device::pf_w)
{
COMBINE_DATA(&m_pf_in);
}
uint8_t upd7810_device::RP(offs_t port)
{
uint8_t data = 0xff;
switch (port)
{
case UPD7810_PORTA:
if (m_ma) // NS20031301 no need to read if the port is set as output
m_pa_in = m_pa_in_cb();
if (m_ma && !m_pa_in_cb.isnull()) // NS20031301 no need to read if the port is set as output
m_pa_in = m_pa_in_cb(0, m_ma);
data = (m_pa_in & m_ma) | (m_pa_out & ~m_ma);
break;
case UPD7810_PORTB:
if (m_mb) // NS20031301 no need to read if the port is set as output
m_pb_in = m_pb_in_cb();
if (m_mb && !m_pb_in_cb.isnull()) // NS20031301 no need to read if the port is set as output
m_pb_in = m_pb_in_cb(0, m_mb);
data = (m_pb_in & m_mb) | (m_pb_out & ~m_mb);
break;
case UPD7810_PORTC:
if (m_mc) // NS20031301 no need to read if the port is set as output
m_pc_in = m_pc_in_cb();
if (m_mc && !m_pc_in_cb.isnull()) // NS20031301 no need to read if the port is set as output
m_pc_in = m_pc_in_cb(0, m_mc);
data = (m_pc_in & m_mc) | (m_pc_out & ~m_mc);
if (m_mcc & 0x01) /* PC0 = TxD output */
data = (data & ~0x01) | (m_txd & 1 ? 0x01 : 0x00);
@ -542,7 +567,8 @@ uint8_t upd7810_device::RP(offs_t port)
data = (data & ~0x80) | (m_co1 & 1 ? 0x80 : 0x00);
break;
case UPD7810_PORTD:
m_pd_in = m_pd_in_cb();
if (!m_pd_in_cb.isnull())
m_pd_in = m_pd_in_cb();
switch (m_mm & 0x07)
{
case 0x00: /* PD input mode, PF port mode */
@ -557,7 +583,8 @@ uint8_t upd7810_device::RP(offs_t port)
}
break;
case UPD7810_PORTF:
m_pf_in = m_pf_in_cb();
if (m_mf && !m_pf_in_cb.isnull())
m_pf_in = m_pf_in_cb(0, m_mf);
switch (m_mm & 0x06)
{
case 0x00: /* PD input/output mode, PF port mode */
@ -1522,11 +1549,11 @@ void upd7810_device::base_device_start()
m_an6_func.resolve_safe(0);
m_an7_func.resolve_safe(0);
m_pa_in_cb.resolve_safe(0);
m_pb_in_cb.resolve_safe(0);
m_pc_in_cb.resolve_safe(0);
m_pd_in_cb.resolve_safe(0);
m_pf_in_cb.resolve_safe(0);
m_pa_in_cb.resolve();
m_pb_in_cb.resolve();
m_pc_in_cb.resolve();
m_pd_in_cb.resolve();
m_pf_in_cb.resolve();
m_pa_out_cb.resolve_safe();
m_pb_out_cb.resolve_safe();

6
src/devices/cpu/upd7810/upd7810.h
View File

@ -159,6 +159,12 @@ public:
template<class _Object> static devcb_base &set_pt_in_cb(device_t &device, _Object object) { return downcast<upd7810_device &>(device).m_pt_in_cb.set_callback(object); }
DECLARE_WRITE8_MEMBER(pa_w);
DECLARE_WRITE8_MEMBER(pb_w);
DECLARE_WRITE8_MEMBER(pc_w);
DECLARE_WRITE8_MEMBER(pd_w);
DECLARE_WRITE8_MEMBER(pf_w);
protected:
// flags
enum