ROM Size

Suffix

ROM Version (IC20 /IC21)

Improve

Issued Date

E1232 Software version

2 MB

A

P011B /P012B

First Production

Aug’93

E1232 (Ver. 1.03)

2 MB

B

P011C /P012C

Sep’93

2 MB

C

P011D /P012D

Oct’93

2 MB

D

P011H /P012H

Dec’93

2 MB

E

P011I /P012I

Dec’93

2 MB

F

P011K /P012K

Feb’94

4 MB

O

P221A /P222A

Support TD174, D-PITS

Sep’96

E1232X1 (Ver. 3.07)

4 MB

Q

P221B /P222B

Mar’97

8 MB

R

P231B /P232B

Add 80 Feature (New CPU)

Jul’97

E1232X6 (Ver. 3.48)

8 MB

S

P231C /P232C

Support TD184 (E&M),TD185 (DID)

Sep’97

8 MB

U

P231I /P232I

Jul’98

8 MB

V

P231J /P232J

Support TD280/286 (ISDN), T74xx, TVP200, TD194, TD197

Sep’98

8 MB

W

P231L /P232L

TD284, T74 Level programming

Oct’98

8 MB

X

P231N /P232N

Dec’98

8 MB

Y

P231R /P232R

Jun’99

8 MB

Z

P231S /P232S

Aug’99

8 MB

C

P231U /P232U

Support TVP50

Mar’00

E1232X7 (Ver. 3.49)