diff options
Diffstat (limited to 'io.c')
| -rw-r--r-- | io.c | 10 |
1 files changed, 5 insertions, 5 deletions
@@ -1229,7 +1229,7 @@ uint8_t io_data_read(io_port * port, uint32_t current_cycle) //it would be unfortunate if our event handler updated cur_x or cur_y in the middle //of the mouse poll sequence, so we save the delta here port->device.mouse.delta_x = port->device.mouse.cur_x - port->device.mouse.last_read_x; - port->device.mouse.delta_y = port->device.mouse.cur_y - port->device.mouse.last_read_y; + port->device.mouse.delta_y = port->device.mouse.last_read_y - port->device.mouse.cur_y; if (port->device.mouse.delta_y > 255 || port->device.mouse.delta_y < -255) { input |= 8; } @@ -1247,16 +1247,16 @@ uint8_t io_data_read(io_port * port, uint32_t current_cycle) input = port->input[0]; break; case 5: - input = abs(port->device.mouse.delta_x) >> 4 & 0xF; + input = port->device.mouse.delta_x >> 4 & 0xF; break; case 6: - input = abs(port->device.mouse.delta_x) & 0xF; + input = port->device.mouse.delta_x & 0xF; break; case 7: - input = abs(port->device.mouse.delta_y) >> 4 & 0xF; + input = port->device.mouse.delta_y >> 4 & 0xF; break; case 8: - input = abs(port->device.mouse.delta_y) & 0xF; + input = port->device.mouse.delta_y & 0xF; //need to figure out when this actually happens port->device.mouse.last_read_x = port->device.mouse.cur_x; port->device.mouse.last_read_y = port->device.mouse.cur_y; |