Description:

The Apple 6309-341-0019 is a vintage 256 × 8-bit PROM (Programmable Read-Only Memory) chip used in early Apple II systems, particularly in the Disk II 16-sector interface card. It’s functionally equivalent to the MMI 6309 or TBP28L22N, and was typically installed in the P5 or P6 ROM socket to store bootloader firmware for disk operations.