— 12 —
4-5. Flash ROM1 address circuit
The 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.
4-6. Memory map
The memory table is as follows:
RAM enable
2CS 3CS 4CS 8CS CCS A18 A19 RAM BANK
Flash BANK
RAM1
Flash1
No.
RB0
RB1
RB2
RB3
RB4
FB0 FB1 FB2 C S A16 C S
A18
H
L
H
H
H
H
L
L
COM X
X
X
X
X
X
X
X
L
L
H
X
H
H
L
H
H
H
L
L
COM X
X
X
X
X
X
X
X
L
H
H
X
H
H
H
L
H
H
H
L
0 L
H
L
L
X
X
X
X
H
X
H
X
1 H
H
L
L
X
X
X
X
H
X
H
X
H
H
H
L
H
H
H
L
L
L
H
L
X
X
X
X
H
X
H
X
H
L
H
L
X
X
X
X
H
X
H
X
H
H
H
L
H
H
H
L
L
H
H
L
X
X
X
X
H
X
H
X
H
H
H
L
X
X
X
X
H
X
H
X
H
H
H
L
H
H
H
L
2 L
L
L
H
L
X
X
X
H
X
H
X
3 H
L
L
H
L
X
X
X
H
X
H
X
4 L
H
L
H
L
X
X
X
H
X
H
X
5 H
H
L
H
L
X
X
X
H
X
H
X
6 L
L
H
H
L
X
X
X
H
X
H
X
7 H
L
H
H
L
X
X
X
H
X
H
X
8 L
H
H
H
L
X
X
X
H
X
H
X
9 H
H
H
H
L
X
X
X
H
X
H
X
10 L
L
L
H
H
X
X
X
H
X
H
X
11 H
L
L
H
H
X
X
X
H
X
H
X
12 L
H
L
H
H
X
X
X
H
X
H
X
13 H
H
L
H
H
X
X
X
H
X
H
X
14 L
L
H
H
H
X
X
X
H
X
H
X
15 H
L
H
H
H
X
X
X
H
X
H
X
16 L
H
H
H
H
X
X
X
H
X
H
X
17 H
H
H
H
H
X
X
X
H
X
H
X
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
X
X
X
X
H
H
L
H
H
H
L
H
L
L
L
X
L
H
L
H
X
H
X
H
L
L
L
X
H
H
L
H
X
H
X
X
H
H
L
H
H
H
L
L
L
L
L
L
L
L
L
H
X
H
X
H
L
L
L
L
L
L
L
H
X
H
X
L
L
L
L
H
L
L
L
H
X
H
X
H
L
L
L
H
L
L
L
H
X
H
X
L
L
L
L
L
H
L
L
H
X
H
X
H
L
L
L
L
H
L
L
H
X
H
X
L
L
L
L
H
H
L
L
H
X
H
X
H
L
L
L
H
H
L
L
H
X
H
X
X
H
H
L
H
H
H
L
X
L
L
L
X
L
X
H
H
X
H
X
X
L
L
L
X
H
X
H
H
X
H
X
X
H
H
H
L
H
L
H
X
X
X
X
X
L
X
H
H
X
H
X
X
X
X
X
X
H
X
H
H
X
H
X
H
H
H
H
L
H
L
H
X
X
X
X
X
X
X
L
H
X
L
A18
H
H
H
H
H
L
H
H
X
X
X
X
X
X
X
X
H
X
L
A18
Flash ROM1 (16M bits)
CPU address
BANK port
Flash memory address
NOTE
A19 A18 A17 FC2
FC1
FC0
BANK
FA20
FA19
FA18
FA17
Memory block No. 8M bank 16M bank
H
L
L
L
L
L
0 L
L
A18
A17
02 to 07
L
H
L
L
H
1 L
H
A18
A17
0A to 0F
H
L
H
X
X
2 A18
A17
L
L
08,09
10,11,18,19
L
H
L
3 H
L
A18
A17
12 to 17
L
H
H
4 H
H
A18
A17
1A to 1F
H
H
H
X
X
X
Common L
L
L
L
00,01
Common
Summary of Contents for CE-6800
Page 5: ...3 2 BLOCK DIAGRAM 2 1 PCB CONNECTION...
Page 31: ...29 5 HIN211CA T 7 LC7932M TE R 6 HY628100ALLG 70...
Page 33: ...31 9 LM2576HVT 5 0LB03 10 MTA001M F4101...
Page 35: ...33 15 SN74LV00APWR 16 SN74LV02APWR 14 SN74HC27PWR 17 SN74LV08APWR...
Page 36: ...34 18 SN74LV138APWR 19 SN74LV139APWR...
Page 37: ...35 20 SN74LV165APWR...
Page 38: ...36 21 SN74LV165APWR 22 SN74LV174APWR...
Page 39: ...37 23 SN74LV32APWR 24 SN74LV74APWR...
Page 40: ...38 7 PCB LAYOUT MAIN PCB Front side...
Page 41: ...39 MAIN PCB Back side...
Page 43: ...41 CASIO COMPUTER CO LTD CE 6800 EX 475P Model Name SYSTEM BLOCK DIAGRAM Drawing No E140329P...
Page 44: ...42 42...
Page 45: ...43 RAM3 and RAM4 are option For CE6800 the Flash ROM2 is not used...
Page 46: ...44...
Page 47: ...45...
Page 48: ...46...
Page 49: ...47 DRW3 and DRW4 are not used...
Page 50: ...48...
Page 51: ...49...
Page 52: ...50...
Page 53: ...51...
Page 54: ...52...
Page 55: ...53 Voltage selector is not used for CE 6800...
Page 56: ...54...
Page 57: ...55...
Page 72: ...70 13 DRAWER DL 2771...
