Casio TK-6500 Service Manual

- 14 -6-5. Flash ROM1 address circuitThe Flash ROM1 address signals FA17 to FA20 are made by the following circuit.The Flash ROM1 (LH28F016SCT-L95, 16M bits) is used for the application program.Flash ROM1 (16M bits)CPU address BANK port Flash memory address NOTEA19 A18 A17 FC2 FC1 FC0 BANK FA20 FA19 FA18 FA17 Memory block No. 8M bank 16M bankH L L L L L 0 L L A18 A17 02 to 07L H L L H 1 L H A18 A17 0A to 0FH L H X X 2 A18 A17 L L 08,0910,11,18,19L H L 3 H L A18 A17 12 to 17L H H 4 H H A18 A17 1A to 1FH H H X X X Common L L L L 00,01 Common6-6. Flash Pack circuit (Memory Cassette RAC-9)The Memory Cassette RAC-9 (2 M bytes) is possible to connect to the Flash Pack connectorCN17 of the Main PCB E475-1.Flash Pack connector[RAC-9 circuit diagram]