HD404356 Datasheet, PDF (11/100 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer

Memory registers
64 MR(0) $040
65 ^MR(1) $041
66 ^MR(2) $042
67 ^MR(3) $043
68 ^MR(4) $044
69 ^MR(5) $045
70 MR(6) $046
71 ^MR(7) $047
72 MR(8) $048
73 MR(9) $049
74 ^MR(10) $04A
75 ^MR(11) $04B
76 ^MR(12) $04C
77 ^MR(13) $04D
78 ^MR(14) $04E
79 ^MR(15) $04F
Stack area
960 Level 16
Level 15
Level 14
Level 13
Level 12
Level 11
Level 10
Level 9
Level 8
Level 7
Level 6
Level 5
Level 4
Level 3
Level 2
1023 Level 1
$3C0
$3FF
PC₁₃–PC₀ : Program counter
ST: Status flag
CA: Carry flag
HD404358 Series
Bit 3
1020 ST
1021 PC₁₀
1022 CA
1023 PC₃
Bit 2
PC₁₃
PC₉
PC₆
PC₂
Bit 1
PC₁₂
PC₈
PC₅
PC₁
Bit 0
PC₁₁
PC₇
PC₄
PC₀
$3FC
$3FD
$3FE
$3FF
Figure 6 Configuration of Memory Registers and Stack Area, and Stack Position
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