blob: 337c26bd510fb11d702335b9ce26cf921e5112e8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
.section .text
.globl _start
.equ UART_DATA, 0
.equ UART_STATUS, 1
.equ UART_RX_READY, 0b10
.equ UART_TX_READY, 0b01
_start:
li a0, 0x10000
loop:
lbu t0, UART_STATUS(a0)
andi t0, t0, UART_RX_READY
beqz t0, loop
lbu t0, UART_DATA(a0)
sb t0, UART_DATA(a0)
j loop
|
