What's a good MIDI editor?

Sekaiju

How do you increase pitch bend to 12 semitones?

Put these events at the beginning of the channel:

What values correspond with what semitones?

Here's a chart:

Owner's Manuals

(For synths I own)

Roland SC-88
Yamaha DX-7 [Voice Library]
PROTEUS/2 Orchestral (Patch List)
Ensoniq ESQ-M