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(MESS) mz3500.c: Reduce some tagmap lookups (nw)

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This commit is contained in:
Wilbert Pol 2014-09-19 20:33:08 +00:00
parent ed4eedbb58
commit aada4d13b8
1 changed files with 22 additions and 13 deletions
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35
src/mess/drivers/mz3500.c
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@ -50,7 +50,9 @@ public:
m_fdc(*this, "upd765a"),
m_video_ram(*this, "video_ram"),
m_beeper(*this, "beeper"),
m_palette(*this, "palette")
m_palette(*this, "palette"),
m_system_dsw(*this, "SYSTEM_DSW"),
m_fd_dsw(*this, "FD_DSW")
{ }
// devices
@ -106,6 +108,11 @@ protected:
virtual void machine_reset();
virtual void video_start();
private:
required_ioport m_system_dsw;
required_ioport m_fd_dsw;
floppy_connector *m_floppy_connector[4];
};
void mz3500_state::video_start()
@ -473,9 +480,9 @@ READ8_MEMBER(mz3500_state::mz3500_io_r)
switch(offset)
{
case 2:
return ((ioport("SYSTEM_DSW")->read() & 0x0f) << 1) | ((ioport("FD_DSW")->read() & 0x8) >> 3);
return ((m_system_dsw->read() & 0x0f) << 1) | ((m_fd_dsw->read() & 0x8) >> 3);
case 3:
return ((ioport("FD_DSW")->read() & 0x7)<<5) | (m_srdy << 4);
return ((m_fd_dsw->read() & 0x7)<<5) | (m_srdy << 4);
}
return 0;
@ -534,15 +541,13 @@ WRITE8_MEMBER(mz3500_state::mz3500_crtc_w)
READ8_MEMBER(mz3500_state::mz3500_fdc_r)
{
static const char *const m_fddnames[4] = { "upd765a:0", "upd765a:1", "upd765a:2", "upd765a:3"};
/*
---- -x-- Motor
---- --x- Index
---- ---x Drq
*/
floppy_image_device *floppy;
floppy = machine().device<floppy_connector>(m_fddnames[m_fdd_sel])->get_device();
floppy_image_device *floppy = m_floppy_connector[m_fdd_sel]->get_device();
return (floppy->mon_r() << 2) | (floppy->idx_r() << 1) | (m_fdc->get_drq() & 1);
}
@ -556,7 +561,6 @@ WRITE8_MEMBER(mz3500_state::mz3500_fdc_w)
---x ---- motor on signal
---- xxxx Select FDD 0-3 (bit-wise)
*/
static const char *const m_fddnames[4] = { "upd765a:0", "upd765a:1", "upd765a:2", "upd765a:3"};
if(data & 0x40)
{
@ -570,7 +574,7 @@ WRITE8_MEMBER(mz3500_state::mz3500_fdc_w)
}
}
machine().device<floppy_connector>(m_fddnames[m_fdd_sel])->get_device()->mon_w(data & 0x10 ? CLEAR_LINE : ASSERT_LINE);
m_floppy_connector[m_fdd_sel]->get_device()->mon_w(data & 0x10 ? CLEAR_LINE : ASSERT_LINE);
}
@ -740,6 +744,13 @@ void mz3500_state::machine_start()
m_char_rom = memregion("gfx1")->base();
m_work_ram = auto_alloc_array_clear(machine(), UINT8, 0x40000);
m_shared_ram = auto_alloc_array_clear(machine(), UINT8, 0x800);
static const char *const m_fddnames[4] = { "upd765a:0", "upd765a:1", "upd765a:2", "upd765a:3"};
for (int i = 0; i < 4; i++)
{
m_floppy_connector[i] = machine().device<floppy_connector>(m_fddnames[i]);
}
}
void mz3500_state::machine_reset()
@ -760,12 +771,10 @@ void mz3500_state::machine_reset()
{
m_fdd_sel = 0;
{
static const char *const m_fddnames[4] = { "upd765a:0", "upd765a:1", "upd765a:2", "upd765a:3"};
for(int i=0;i<4;i++)
{
machine().device<floppy_connector>(m_fddnames[i])->get_device()->mon_w(ASSERT_LINE);
machine().device<floppy_connector>(m_fddnames[i])->get_device()->set_rpm(300);
m_floppy_connector[i]->get_device()->mon_w(ASSERT_LINE);
m_floppy_connector[i]->get_device()->set_rpm(300);
}
machine().device<upd765a_device>("upd765a")->set_rate(250000);