diff options
author | 2014-01-09 00:53:59 +0000 | |
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committer | 2014-01-09 00:53:59 +0000 | |
commit | 5834061747517b7fa099a2b57f81e1f556ade643 (patch) | |
tree | 8bdff39346fd0aeeee9ef5c9d5682f0bc554bd06 /src/mess/drivers/altair.c | |
parent | f4655e0ae469df0f9b3e46ed6e1f1e41ce896b2d (diff) |
(MESS) Hooked ACIA 6850 up to Altair 8800bt [smf]
Diffstat (limited to 'src/mess/drivers/altair.c')
-rw-r--r-- | src/mess/drivers/altair.c | 64 |
1 files changed, 21 insertions, 43 deletions
diff --git a/src/mess/drivers/altair.c b/src/mess/drivers/altair.c index 6a681f61df9..40a23937aaa 100644 --- a/src/mess/drivers/altair.c +++ b/src/mess/drivers/altair.c @@ -20,7 +20,8 @@ #include "emu.h" #include "cpu/i8085/i8085.h" -#include "machine/terminal.h" +#include "machine/6850acia.h" +#include "machine/serial.h" #include "imagedev/snapquik.h" @@ -30,17 +31,9 @@ public: altair_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), - m_terminal(*this, TERMINAL_TAG), m_ram(*this, "ram"){ } required_device<cpu_device> m_maincpu; - required_device<generic_terminal_device> m_terminal; - DECLARE_READ8_MEMBER(sio_status_r); - DECLARE_READ8_MEMBER(sio_data_r); - DECLARE_READ8_MEMBER(sio_key_status_r); - DECLARE_WRITE8_MEMBER(sio_command_w); - DECLARE_WRITE8_MEMBER(kbd_put); - UINT8 m_term_data; required_shared_ptr<UINT8> m_ram; virtual void machine_reset(); DECLARE_QUICKLOAD_LOAD_MEMBER(altair); @@ -48,27 +41,6 @@ public: -READ8_MEMBER(altair_state::sio_status_r) -{ - return (m_term_data) ? 1 : 2; -} - -WRITE8_MEMBER(altair_state::sio_command_w) -{ -} - -READ8_MEMBER(altair_state::sio_data_r) -{ - UINT8 ret = m_term_data; - m_term_data = 0; - return ret; -} - -READ8_MEMBER(altair_state::sio_key_status_r) -{ - return (m_term_data) ? 0x40 : 0x01; -} - static ADDRESS_MAP_START(altair_mem, AS_PROGRAM, 8, altair_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0xfcff ) AM_RAM AM_SHARE("ram") @@ -79,9 +51,9 @@ ADDRESS_MAP_END static ADDRESS_MAP_START(altair_io, AS_IO, 8, altair_state) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE( 0x00, 0x00 ) AM_READ(sio_key_status_r) - AM_RANGE( 0x01, 0x01 ) AM_MIRROR(0x10) AM_READ(sio_data_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write) - AM_RANGE( 0x10, 0x10 ) AM_READWRITE(sio_status_r,sio_command_w) + // TODO: Remove AM_MIRROR() and use SIO address S0-S7 + AM_RANGE( 0x00, 0x00 ) AM_MIRROR(0x10) AM_DEVREADWRITE("mc6850", acia6850_device, status_read, control_write) + AM_RANGE( 0x01, 0x01 ) AM_MIRROR(0x10) AM_DEVREADWRITE("mc6850", acia6850_device, data_read, data_write) ADDRESS_MAP_END /* Input ports */ @@ -108,29 +80,35 @@ void altair_state::machine_reset() { // Set startup addess done by turn-key m_maincpu->set_state_int(I8085_PC, 0xFD00); - - m_term_data = 0; } -WRITE8_MEMBER( altair_state::kbd_put ) -{ - m_term_data = data; -} +//------------------------------------------------- +// ACIA6850_INTERFACE( acia0_intf ) +//------------------------------------------------- -static GENERIC_TERMINAL_INTERFACE( terminal_intf ) +static ACIA6850_INTERFACE( acia0_intf ) { - DEVCB_DRIVER_MEMBER(altair_state, kbd_put) + 153600, // TODO: these are set using jumpers S3/S2/S1/S0 + 153600, + DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx), + DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w), + DEVCB_NULL }; + static MACHINE_CONFIG_START( altair, altair_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", I8080, XTAL_2MHz) MCFG_CPU_PROGRAM_MAP(altair_mem) MCFG_CPU_IO_MAP(altair_io) - /* video hardware */ - MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf) + MCFG_ACIA6850_ADD("mc6850", acia0_intf) + + MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "serial_terminal") + MCFG_SERIAL_OUT_RX_HANDLER(DEVWRITELINE("mc6850", acia6850_device, write_rx)) + MCFG_RS232_OUT_DCD_HANDLER(DEVWRITELINE("mc6850", acia6850_device, write_dcd)) + MCFG_RS232_OUT_CTS_HANDLER(DEVWRITELINE("mc6850", acia6850_device, write_cts)) /* quickload */ MCFG_QUICKLOAD_ADD("quickload", altair_state, altair, "bin", 0) |