diff options
Diffstat (limited to 'src/mame/drivers/microdec.cpp')
-rw-r--r-- | src/mame/drivers/microdec.cpp | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/mame/drivers/microdec.cpp b/src/mame/drivers/microdec.cpp index 8b735c55cad..2e2cccb2c39 100644 --- a/src/mame/drivers/microdec.cpp +++ b/src/mame/drivers/microdec.cpp @@ -145,16 +145,16 @@ void microdec_state::microdec_io(address_map &map) map(0xfa, 0xfb).m(m_fdc, FUNC(upd765a_device::map)); map(0xfc, 0xfd).rw("uart1", FUNC(i8251_device::read), FUNC(i8251_device::write)); map(0xfe, 0xff).rw("uart2", FUNC(i8251_device::read), FUNC(i8251_device::write)); - // AM_RANGE(0xf0, 0xf3) 8253 PIT (md3 only) used as a baud rate generator for serial ports - // AM_RANGE(0xf4, 0xf4) Centronics data - // AM_RANGE(0xf5, 0xf5) motor check (md1/2) - // AM_RANGE(0xf5, 0xf5) Centronics status (md3) read bit 3 (ack=1); read bit 4 (busy=1); write bit 7 (stb=0) - // AM_RANGE(0xf6, 0xf6) rom enable (w=enable; r=disable) - // AM_RANGE(0xf7, 0xf7) VFO Count set - // AM_RANGE(0xf8, 0xf8) Motor and Shift control - // AM_RANGE(0xfa, 0xfb) uPD765C fdc FA=status; FB=data - // AM_RANGE(0xfc, 0xfd) Serial Port 1 (terminal) FC=data FD=status - // AM_RANGE(0xfe, 0xff) Serial Port 2 (printer) FE=data FF=status + // map(0xf0, 0xf3) 8253 PIT (md3 only) used as a baud rate generator for serial ports + // map(0xf4, 0xf4) Centronics data + // map(0xf5, 0xf5) motor check (md1/2) + // map(0xf5, 0xf5) Centronics status (md3) read bit 3 (ack=1); read bit 4 (busy=1); write bit 7 (stb=0) + // map(0xf6, 0xf6) rom enable (w=enable; r=disable) + // map(0xf7, 0xf7) VFO Count set + // map(0xf8, 0xf8) Motor and Shift control + // map(0xfa, 0xfb) uPD765C fdc FA=status; FB=data + // map(0xfc, 0xfd) Serial Port 1 (terminal) FC=data FD=status + // map(0xfe, 0xff) Serial Port 2 (printer) FE=data FF=status } /* Input ports */ |