# https://blog.thea.codes/the-most-thoroughly-commented-linker-script/
# https://interrupt.memfault.com/blog/how-to-write-linker-scripts-for-firmware

bin/riscv64-unknown-elf-as -march=rv32i -mabi=ilp32 -mno-relax mandelbrot_terminal.S -o mandelbrot_terminal.o
riscv64-unknown-elf-ld mandelbrot_terminal.o -T baremetal.ld -m elf32lriscv -nostdlib -norelax
/home/blevy/Programming/learn-fpga/FemtoRV/FIRMWARE/TOOLS/firmware_words a.elf -ram 6144 -hex a.hex


FTDI 2232H

Rx   >
Tx   <
RTSn > Request to send 
CTSn < Clear to send 
DTRn > Data Terminal Ready
DSRn < Data Set Ready 
DCDn > Data Carrier Detect


#set_io DCDn 1
#set_io DSRn 2
#set_io DTRn 3
#set_io CTSn 4
#set_io RTSn 7
set_io RS232_Tx_TTL 8
set_io RS232_Rx_TTL 9