Special Keyboard Keys

MMBasic generates a single unique character for the function keys and other special keys on the keyboard. These are shown in this table as hexadecimal and decimal numbers:

Keyboard Key

Key Code (Hex)

Key Code (Decimal)

DEL

7F

127

Up Arrow

80

128

Down Arrow

81

129

Left Arrow

82

130

Right Arrow

83

131

Insert

84

132

Home

86

134

End

87

135

Page Up

88

136

Page Down

89

137

Alt

8B

139

F1/Shift F1

91/B1

145/177

F2/Shift F2

92/B2

146/178

F3/Shift F3 **

93/B3

147/179

F4/Shift F4 **

94/B4

148/180

F5/Shift F5 **

95/B5

149/181

F6/Shift F6 **

96/B6

150/182

F7/Shift F7 **

97/B7

151/183

F8/Shift F8 **

98/B8

152/184

F9/Shift F9

99/B9

153/185

F10/Shift F10

9A/BA

154/186

F11/Shift F11

9B/BB

155/187

F12/Shift F12

9C/BC

156/188

PrtScr/SysRq

9D

157

PAUSE/BREAK

9E

158

SHIFT_TAB

9F

159

SHIFT_DEL

A0

160

SHIFT_DOWN_ARROW

A1

161

SHIFT_RIGHT_ARROW

A3

163

** indicates also work for VT100 emulators

PicoMite User Manual

Page 207

For attached PS2 and USB keyboards, if the shift key is simultaneously pressed with the function keys F1 to F12 then 20 (hex) is added to the code (this is the equivalent of setting bit 5). For example Shift-F10 will generate BA (hex). The shift modifier works with the function keys F1 to F12; it is ignored for the other keys except TAB, DEL, DOWN_ARROW and RIGHT_ARROW as identified above. MMBasic will translate most VT100 escape codes generated by terminal emulators such as TeraTerm and Putty to these codes (the shift modifier only works for F3-F8). This means that a terminal emulator operating over a USB or a serial port opened as console will generate the same key codes as a directly attached keyboard.

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