Pbk71, you can run .bin programs directly in WebMSX.
That's an example:
https://webmsx.org/?MACHINE=MSX1&DISK_FILES=https://sysadminmosaic.ru/_media/msx/learning_msx_machine_code/001.bin&BASIC_BRUN=001.bin&FAST_BOOT
Thanks, good to know
I've posted a new blog about programming assembly for the MSX. It's about loops and the text screen. It describes how to build a simple program step by step. This program moves a character across the screen. It's certainly not the shortest or fastest program to achieve this but keep in mind that it is to explain how a simple loops and bios calls work. Later on I will show how to achieve such an effect in a better, faster way.
Read the blog here: https://learningmsxmachinecode.blogspot.com/2021/05/3-more-on-bios-calls-for-text-screen.html