Macintosh comes with two built-in serial ports, the RS232, the RS422 and an incredible thing called Apple Bus Interconnect.

Macintosh有两个内置的串口，RS232和RS422，还有一个不可思议的东西叫做苹果互连总线。

The developers will turn the serial port on when something goes wrong.

当出现问题时，开发人员会打开串口。

There is a GPU here, a bunch of peripherals here, like a UART, a serial console, or serial port.

这里有一个 GPU，这里有一堆外围设备，例如 UART、串行控制台或串行端口。

Our code that runs after the ROM still needs to be able to read out that ROM and dump this to the serial port so that we can get a dump of the ROM.

我们在 ROM 之后运行的代码仍然需要能够读出该 ROM 并将其转储到串行端口，以便我们可以获得 ROM 的转储。