DigiTech Midi Implementation Manual page 9

d(c) 0000000vb where v is bit 7 of the cth byte being sent.
d(c)' 0vvvvvvvb where v is bits 6 through 0 of the cth byte being sent.
The DATA RESPONSE procedure is sent from a DigiTech device in response to a
REQUEST RAM AREA procedure. If a DATA RESPONSE procedure is received by a
DigiTech device, it is ignored. The Midi Device Manuals for the DigiTech
devices which send the DATA RESPONSE procedure contain a memory map and
definition of the ram locations which may be sent in response to a REQUEST
RAM AREA procedure.
RESET DEVICE (00100000b 20h)
SYSX_HEADER 20h EOX
The RESET DEVICE procedure causes the DigiTech device to reset itself as
though the power had just been turned on.
RESET HARDWARE (00100001b 21h)
SYSX_HEADER 21h EOX
The RESET HARDWARE procedure causes the DigiTech device to reload all of
it's hardware devices.