diff options
Diffstat (limited to 'io.c')
| -rw-r--r-- | io.c | 112 |
1 files changed, 103 insertions, 9 deletions
@@ -258,18 +258,18 @@ void handle_binding_down(keybinding * binding) void store_key_event(uint16_t code) { - if (keyboard_port) { - keyboard_port->device.keyboard.write_pos = (keyboard_port->device.keyboard.write_pos + 1) & 7; - if (keyboard_port->device.keyboard.write_pos == keyboard_port->device.keyboard.read_pos) { - //we've wrapped around to the read position, drop this event - keyboard_port->device.keyboard.write_pos = (keyboard_port->device.keyboard.write_pos - 1) & 7; - return; - } + if (keyboard_port && keyboard_port->device.keyboard.write_pos != keyboard_port->device.keyboard.read_pos) { + //there's room in the buffer, record this event keyboard_port->device.keyboard.events[keyboard_port->device.keyboard.write_pos] = code; + if (keyboard_port->device.keyboard.read_pos == 0xFF) { + //ring buffer was empty, update read_pos to indicate there is now data + keyboard_port->device.keyboard.read_pos = keyboard_port->device.keyboard.write_pos; + } + keyboard_port->device.keyboard.write_pos = (keyboard_port->device.keyboard.write_pos + 1) & 7; } } -void handle_keydown(int keycode, char scancode) +void handle_keydown(int keycode, uint8_t scancode) { int bucket = keycode >> 15 & 0xFFFF; if (!bindings[bucket]) { @@ -404,7 +404,7 @@ void handle_binding_up(keybinding * binding) } } -void handle_keyup(int keycode, char scancode) +void handle_keyup(int keycode, uint8_t scancode) { int bucket = keycode >> 15 & 0xFFFF; if (!bindings[bucket]) { @@ -681,6 +681,10 @@ void process_device(char * device_type, io_port * port) port->device.mouse.latched_y = 0; port->device.mouse.ready_cycle = CYCLE_NEVER; port->device.mouse.tr_counter = 0; + } else if(!strcmp(device_type, "saturn keyboard")) { + port->device_type = IO_SATURN_KEYBOARD; + port->device.keyboard.read_pos = 0xFF; + port->device.keyboard.write_pos = 0; } else if(!strcmp(device_type, "sega_parallel")) { port->device_type = IO_SEGA_PARALLEL; port->device.stream.data_fd = -1; @@ -1281,6 +1285,24 @@ void io_data_write(io_port * port, uint8_t value, uint32_t current_cycle) } } break; + case IO_SATURN_KEYBOARD: + if (output & TH) { + //request is over + if (port->device.keyboard.tr_counter >= 10 && port->device.keyboard.read_pos != 0xFF) { + //remove scan code from buffer + port->device.keyboard.read_pos++; + port->device.keyboard.read_pos &= 7; + if (port->device.keyboard.read_pos == port->device.keyboard.write_pos) { + port->device.keyboard.read_pos = 0xFF; + } + } + port->device.keyboard.tr_counter = 0; + } else { + if ((output & TR) != (old_output & TR)) { + port->device.keyboard.tr_counter++; + } + } + break; #ifndef _WIN32 case IO_GENERIC: wait_for_connection(port); @@ -1397,6 +1419,78 @@ uint8_t io_data_read(io_port * port, uint32_t current_cycle) } break; } + case IO_SATURN_KEYBOARD: + { + if (th) { + input = 0x11; + } else { + uint8_t tr = output & TR; + uint16_t code = port->device.keyboard.read_pos == 0xFF ? 0 + : port->device.keyboard.events[port->device.keyboard.read_pos]; + switch (port->device.keyboard.tr_counter) + { + case 0: + input = 1; + break; + case 1: + //Saturn peripheral ID + input = 3; + break; + case 2: + //data size + input = 4; + break; + case 3: + //d-pad + //TODO: set these based on keyboard state + input = 0xF; + break; + case 4: + //Start ABC + //TODO: set these based on keyboard state + input = 0xF; + break; + case 5: + //R XYZ + //TODO: set these based on keyboard state + input = 0xF; + break; + case 6: + //L and KBID + //TODO: set L based on keyboard state + input = 0x8; + break; + case 7: + //Capslock, Numlock, Scrolllock + //TODO: set these based on keyboard state + input = 0; + break; + case 8: + input = 6; + if (code & 0x100) { + //break + input |= 1; + } else if (code) { + input |= 8; + } + break; + case 9: + input = code >> 4 & 0xF; + break; + case 10: + input = code & 0xF; + break; + case 11: + input = 0; + break; + default: + input = 1; + break; + } + input |= ((port->device.keyboard.tr_counter & 1) == 0) << 4; + } + break; + } #ifndef _WIN32 case IO_SEGA_PARALLEL: if (!th) |