What is this? - 386 ISA Card?

2 ISA Hardware isa slot function slots Common types of expansion slots used are ISA; PCI; AGP; PCIe; AMR; CNR They differ in the function they do and in their appearance and are illustrated isa expansion slot Half size ISA Bus adapter card · Allows PC104 module usage in a standard ISA slot · Permits “In Systems Emulation” for quick program development · 8- and 16-bit

isa slot computer outb() and inb() functions defined in sys helps us write and read ISA , recheck the fortunately did not mistake the 12V pin