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Diffstat (limited to 'src/devices/bus/centronics/adaptator.cpp')
-rw-r--r-- | src/devices/bus/centronics/adaptator.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/devices/bus/centronics/adaptator.cpp b/src/devices/bus/centronics/adaptator.cpp new file mode 100644 index 00000000000..411992b6652 --- /dev/null +++ b/src/devices/bus/centronics/adaptator.cpp @@ -0,0 +1,91 @@ +// license:BSD-3-Clause +// copyright-holders:Angelo Salese +/************************************************************************************************** + +"The Adaptator" a.k.a. DIY parallel port to 2x DE-9 Multitap adapter + +Originally bundled with the Amiga/ST/DOS/C=64 versions of Dyna Blaster as a sort of mandatory +dongle (i.e. game menus needs joy 3 in Amiga version at least). + +List of known supported games: +amigaocs_flop +- dynabls; +- kickoff2; +- gauntlt2; +- protent2; +- sskid; + +TODO: +- DOS ct486 dynablst doesn't work, BIOS shenanigans? +- atarist (cracked only, loose) Dyna Blaster doesn't work either, needs select and data in routing; +- Untested on C=64; +- gauntlt2 seemingly requires a slightly different pinout according to the Super Skidmarks + manual "connect pin 6 of joy 3 to pin 13 (?), pin 6 of joy 4 to pin 12"; +- Anything that isn't Atari/Commodore single button joystick is uncharted waters at current time + (read: no SW pretends to read a mouse or a MD pad with this); + +References: +- https://www.aminet.net/package/util/misc/ControllerTest technical documentation; +- https://www.aminet.net/package/util/misc/VATestprogram MouseJoy test; +- Super Skidmarks manual, page 3; + +**************************************************************************************************/ + +#include "emu.h" +#include "adaptator.h" + +DEFINE_DEVICE_TYPE(ADAPTATOR_MULTITAP, adaptator_multitap_device, "adaptator_multitap", "The Adaptator 2x DE-9 Multitap") + +adaptator_multitap_device::adaptator_multitap_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, ADAPTATOR_MULTITAP, tag, owner, clock), + device_centronics_peripheral_interface(mconfig, *this), + m_joy(*this, "joy_p%u", 1U) +{ } + + +void adaptator_multitap_device::device_add_mconfig(machine_config &config) +{ + VCS_CONTROL_PORT(config, m_joy[0], vcs_control_port_devices, "joy"); + VCS_CONTROL_PORT(config, m_joy[1], vcs_control_port_devices, "joy"); +} + +void adaptator_multitap_device::device_start() +{ + save_item(NAME(m_ddr)); +} + +void adaptator_multitap_device::input_strobe(int state) +{ + // assume 1 -> 0, assume writing to the data port causes pullup + // i.e. ControllerTest just writes a 0xff, at init time. ct486 do the same at POST. + if (state) + return; + + u8 p1_in = m_joy[0]->read_joy(); + u8 p2_in = m_joy[1]->read_joy(); + + // route pin 13 -> joy port 3 pin 6 + output_select(BIT(p1_in, 5)); + // route pin 11 -> joy port 4 pin 6 + output_busy(BIT(p2_in, 5)); + // pins 18-22 -> pin 8 ground for both + + // NOTE: 2nd button hooks are possible but ControllerTest warns that ACK + // "is not easily available to software without some fancy interrupt trickery" + // so it doesn't support it. + // route pin 12 (pout) -> joy port 3 pin 9 + //output_perror(BIT(p1_in, ?)); + // route pin 10 (ack) -> joy port 4 pin 9 + //output_ack(BIT(p2_in, ?)); + + // route pins 2-5 -> joy port 3 pins 1-4 + output_data0(BIT(p1_in, 0)); + output_data1(BIT(p1_in, 1)); + output_data2(BIT(p1_in, 2)); + output_data3(BIT(p1_in, 3)); + // route pins 6-9 -> joy port 4 pins 1-4 + output_data4(BIT(p2_in, 0)); + output_data5(BIT(p2_in, 1)); + output_data6(BIT(p2_in, 2)); + output_data7(BIT(p2_in, 3)); +} |