diff options
Diffstat (limited to 'src/mess/drivers/apricot.c')
-rw-r--r-- | src/mess/drivers/apricot.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/src/mess/drivers/apricot.c b/src/mess/drivers/apricot.c index 400a31a70a0..36d0fd5b524 100644 --- a/src/mess/drivers/apricot.c +++ b/src/mess/drivers/apricot.c @@ -39,7 +39,6 @@ public: m_cpu(*this, "ic91"), m_iop(*this, "ic71"), m_ram(*this, RAM_TAG), - m_sn(*this, "ic7"), m_crtc(*this, "ic30"), m_ppi(*this, "ic17"), m_pic(*this, "ic31"), @@ -73,7 +72,9 @@ public: DECLARE_WRITE_LINE_MEMBER(timer_out1); DECLARE_WRITE_LINE_MEMBER(timer_out2); DECLARE_WRITE_LINE_MEMBER(fdc_intrq_w); + DECLARE_READ8_MEMBER(sio_da_r); DECLARE_READ8_MEMBER(sio_ca_r); + DECLARE_READ8_MEMBER(sio_db_r); DECLARE_READ8_MEMBER(sio_cb_r); DECLARE_WRITE_LINE_MEMBER(write_centronics_fault); @@ -94,7 +95,6 @@ private: required_device<i8086_cpu_device> m_cpu; required_device<i8089_device> m_iop; required_device<ram_device> m_ram; - required_device<sn76489_device> m_sn; required_device<mc6845_device> m_crtc; required_device<i8255_device> m_ppi; required_device<pic8259_device> m_pic; @@ -222,6 +222,14 @@ WRITE_LINE_MEMBER( apricot_state::timer_out2 ) } } +READ8_MEMBER( apricot_state::sio_da_r ) +{ + if (m_bus_locked) + return m_sio->m1_r(); + + return m_sio->da_r(space, offset); +} + READ8_MEMBER( apricot_state::sio_ca_r ) { if (m_bus_locked) @@ -238,6 +246,14 @@ READ8_MEMBER( apricot_state::sio_cb_r ) return m_sio->cb_r(space, offset); } +READ8_MEMBER( apricot_state::sio_db_r ) +{ + if (m_bus_locked) + return m_sio->m1_r(); + + return m_sio->db_r(space, offset); +} + //************************************************************************** // FLOPPY @@ -339,9 +355,9 @@ static ADDRESS_MAP_START( apricot_io, AS_IO, 16, apricot_state ) AM_RANGE(0x48, 0x4f) AM_DEVREADWRITE8("ic17", i8255_device, read, write, 0x00ff) AM_RANGE(0x50, 0x51) AM_MIRROR(0x06) AM_DEVWRITE8("ic7", sn76489_device, write, 0x00ff) AM_RANGE(0x58, 0x5f) AM_DEVREADWRITE8("ic16", pit8253_device, read, write, 0x00ff) - AM_RANGE(0x60, 0x61) AM_DEVREADWRITE8("ic15", z80sio0_device, da_r, da_w, 0x00ff) + AM_RANGE(0x60, 0x61) AM_READ8(sio_da_r, 0x00ff) AM_DEVWRITE8("ic15", z80sio0_device, da_w, 0x00ff) AM_RANGE(0x62, 0x63) AM_READ8(sio_ca_r, 0x00ff) AM_DEVWRITE8("ic15", z80sio0_device, ca_w, 0x00ff) - AM_RANGE(0x64, 0x65) AM_DEVREADWRITE8("ic15", z80sio0_device, db_r, db_w, 0x00ff) + AM_RANGE(0x64, 0x65) AM_READ8(sio_db_r, 0x00ff) AM_DEVWRITE8("ic15", z80sio0_device, db_w, 0x00ff) AM_RANGE(0x66, 0x67) AM_READ8(sio_cb_r, 0x00ff) AM_DEVWRITE8("ic15", z80sio0_device, cb_w, 0x00ff) AM_RANGE(0x68, 0x69) AM_MIRROR(0x04) AM_DEVWRITE8("ic30", mc6845_device, address_w, 0x00ff) AM_RANGE(0x6a, 0x6b) AM_MIRROR(0x04) AM_DEVREADWRITE8("ic30", mc6845_device, register_r, register_w, 0x00ff) |