Kay nails it: the ENIAC 'BIOS' was literally a team of humans with patch cables. Makes you appreciate modern bootloaders.
Even into the "modern" microprocessor era, a lot of them had no BIOS to speak of they just loaded the first instruction (or a pointer to it) from a standard address (e.g. 0000) and started running.
cold_boot · · focus · HN ↗
SoftTalker · · focus · HN ↗