Source code can be found at: https://github.com/ElectronWranglerTV/Bare-Metal/blob/main/MCS-80_85/Example_1.asm
In the Bad Old Days bringing up a computer often meant manually feeding instructions to it via front-panel switches and LEDs. This was even the case in some systems that had secondary storage such as disks. After a simple program was manually loaded, more complex programs could be manually loaded or the system could be instructed to load and execute code from secondary storage.Additionally, with the introduction of non-volatile program memories, the initial steps of bringing up a system via a front-panel included entering very basic code to allow the programming of non-volatile memories such as EPROMs
About Electron Wrangler
He who controls the electrons controls the universe!