回复 1# SergeyCherkasov
1 - NECD8255AC-5,2 - NECD8251AFC, 3 - TOSHIBATMP8253P-5, 5 -MITSUBISHI M5L8259AP
A: above , all is logic IC . no data can be programming and saved. only setting and testing logic if supported. B: TOSHIBAТС5565APL-15, this a SRAM chip. Power off, data will be lost | 
