Private Modes used by DEC

This page is just a rough extract from the DECronomicon. These modes are parameters to the Set Mode (SM) and Reset Mode (RM) sequences.

No. Mnemonic Description
1DECCKMCursor Keys
2DECANMANSI
3DECCOLMColumn
4DECSCLMScrolling
5DECSCNMScreen Mode (light or dark screen)
6DECOMOrigin Mode
7DECAWMAutowrap
8DECARMAutorepeat
9DECINLMInterlace Mode
10DECEDMEditing Mode
11DECLTMLine Transmit Mode
12DECKANAMKatakana Shift Mode
(VT382)
13DECSCFDMSpace Compression/Field Delimiter Mode
14DECTEMTransmit Execution Mode
15
16DECEKEMEdit Key Execution Mode
17
18DECPFFPrint Form Feed
19DECPEXPrinter Extent
20
21
22
23
24Low or high density printing (LA12)
25DECTCEMText Cursor Enable
26
27DECPSPProportional Spacing
28
29DECPSMPitch Select Mode
30
31
32
33
34DECRLMRight to Left Mode
35DECHEBMHebrew (Keyboard) Mode / VT3XX-TP,-HR has 35 as DECTEK but this must be a typo for 38?
36DECHEMHebrew Encoding Mode
37
38Enter (set) or Exit (reset) 4010/4014 mode (VT330)
39
40DECCRNLMCarriage Return/New Line Mode
41
42DECNRCMNational Replacement Character Set Mode
43DECGEPMGraphics Expanded Print Mode
44DECGPCMGraphics Print Color Mode
45DECGPCSGraphics Print Color Syntax
46DECGPBMGraphics Print Background Mode
47DECGRPMGraphics Rotated Print Mode
48
49DECTHAIMThai input mode
(VT382-TB)
50DECTHAICMThai cursor mode
(VT382-TB)
51
52DECOPMOrigin Placement Mode
53DEC131TMVT131 transmit (VT330)
54
55
56
57DECNAKBNorth American Keyboard
58DECIPEMEnter/Return from IBM ProPrinter Emulation Mode
59DECKKDMKanji/Katakana Display Mode
(VT382)
60DECHCCMHorizontal Cursor Coupling
61DECVCCMVertical Cursor Coupling Mode
62
63
64DECPCCMPage Cursor Coupling Mode
65
66DECNKMNumeric Keypad Mode
67DECBKMBackarrow Key
68DECKBUMKeyboard Usage Mode
69DECVSSMVertical Split Screen Mode
70
71
72
73DECXRLMTransmission Rate Limiting
74
75
76
77
78
79
80DECSDMSixel display mode
(VT382)
81DECKPMKey Position Mode
82
83
84
85
86
87
88
89
90DECTHAISCMThai Space Compensating Mode
(VT382-TB)
91
92
93
94
95DECNCSM
96DECRLCM
97DECCRTSM
98DECARSM
99DECMCMModem Control Mode
100DECAAMAuto Answerback Mode
101DECCANSMConceal Answerback Message Mode
102DECNULMNull Mode
103DECHDPXMHalf-Duplex Mode
104DECESKM
105
106DECOSCNMOverscan Mode
107
108
109
110