Motherboard#2964 (IBM PS/2 MODEL 25 (8525) (Type 1)) has been dissociated from Chip#6478 (Intel 8272A (Floppy controller)) by helencroft

Motherboard#2964 (IBM PS/2 MODEL 25 (8525) (Type 1)) has been associated to Chip#5490 (NEC uPD765 (Floppy Controller) [WD37C65, FDC37C65, Z765A, Z0765A, GM82C765B, \*765\*, 8272A, UM8272A]) by helencroft