Oki MSM80C154S Specification Sheet page 22

MSM80C154S/83C154S
Diagram of Internal Data Memory (RAM)
0FFH
80H
7FH
30H
2FH 7F 7E
2EH 77 76
2DH 6F 6E
2CH 67 66
2BH 5F 5E
2AH 57 56
29H 4F 4E
28H 47 46
27H 3F 3E
26H 37 36
25H 2F 2E
24H 27 26
23H
1F 1E
22H 17 16
21H 0F 0E
20H 07 06
1FH
18H
17H
10H
0FH
08H
07H
00H
280
USER DATA RAM
USER DATA RAM
7D 7C 7B 7A
75 74 73 72
6D 6C 6B 6A
65 64 63 62
5D 5C 5B 5A
55 54 53 52
4D 4C 4B 4A
45 44 43 42
3D 3C 3B 3A
35 34 33 32
2D 2C 2B 2A
25 24 23 22
1D 1C 1B 1A
15 14 13 12
0D 0C 0B 0A
05 04 03 02
Bank 3
Bank 2
Bank 1
Bank 0
¡ Semiconductor
255
128
127
48
79 78 47
71 70 46
69 68 45
61 60 44
59 58 43
51 50 42
49 48 41
41 40 40
39 38 39
31 30 38
29 28 37
21 20 36
19 18 35
11 10 34
09 08 33
01 00 32
31
24
23
16
15
8
7
0