Configureing the target monitor MON51 for an external 16550 UART

Hi. I designed my own evaluation board for C51-derivates. For monitor communication I implemented an external 16550 UART that works fine when debugging my software. The UART-interrupt output is inverted...
Configureing the target monitor MON51 for an external 16550 UART

Hi. I designed my own evaluation board for C51-derivates. For monitor communication I implemented an external 16550 UART that works fine when debugging my software. The UART-interrupt output is inverted...
UART in application code loading

all, I have used an112 to implement in-circuit firmware update with the serial port. I am not having problems updating the firmware (i.e when only the bootloader is present). But the next time...
UART in application code loading

all, I have used an112 to implement in-circuit firmware update with the serial port. I am not having problems updating the firmware (i.e when only the bootloader is present). But the next time...
External Uart Question

HI, I want to use the 16550 as external uart, but i have some question. 1. What is the address location of 16550 at mon51, because i need to enable it. 2. how to set the baudrate to 56k at mon51...