Appendix C: ASCII Table

The 8080 uses a seven-bit ASCII code, which is the normal 8 bit ASCII code with the parity (high-order) bit always reset.

Graphic or Control

ASCII (Hexadecimal)

NULL

00

SOM

01

EOA

02

EOM

03

EOT

04

WRU

05

RU

06

BELL

07

FE

08

  1. Tab

09

Line Feed

0A

  1. Tab

0B

Form

0C

Return

0D

SO

0E

SI

0F

DC0

10

X-On

11

Tape Aux. On

12

X-Off

13

Tape Aux. Off

14

Error

15

Sync

16

LEM

17

S0

18

S1

19

S2

1A

S3

1B

S4

1C

S5

1D

S6

1E

S7

1F

ACK

7C

Alt. Mode

7D

Rubout

7F

!

21

“

22

#

23

$

24

%

25

&

26

‘

27

(

28

)

29

*

2A

2B

,

2C

2D

.

2E

/

2F

:

3A

;

3B

<

3C

=

3D

>

3E

?

3F

[

5B

\

5C

]

5D

↑

5E

←

5F

@

40

blank

20

0

30

1

31

2

32

3

33

4

34

5

35

6

36

7

37

8

38

9

39

A

41

B

42

C

43

D

44

E

45

F

46

G

47

H

48

I

49

J

4A

K

4B

L

4C

M

4D

N

4E

O

4F

P

50

Q

51

R

52

S

53

T

54

U

55

V

56

W

57

X

58

Y

59

Z

5A

Todo

In the original (scans/page-80.png, scans/page-81.png) this table is printed in three columns, in the order shown here, which is not numeric. “DC0” (10H) may be “DCO” in the scan. Consider re-sorting the table by code for easier reading.