Command list

Command packets consist of the following:

sync (0E)

destination address

length of data + checksum

data byte 1

data byte 2

...

data byte N-1

checksum

The checksum is the sum of the destination address, length of data and data, mod 256

Commands marked as 'required' must be implement to conform to the standard. The rest can be left unimplemented, support is indicated by the reply to command 0x14 'get slave features'.

ID	Required	Description
broadcast commands (meant for all active nodes, sent to node ID FF)
F0	x	reset
F1	x	set node address
F2		set up communications
initialization commands
10	x	read ID data
11	x	get command format revision
12	x	get JVS revision
13	x	get supported communications versions
14	x	get slave features
15		convey ID of main board
I/O commands
20		read switch inputs
21		read coin inputs
22		read analog inputs
23		read rotary inputs
24		read key code input?
25		read screen position input (duckhunt gun style)
26		read general-purpose (unrelated to player) input
2e		something with payouts?
2f	x	request to retransmit data in case of checksum failure
30		decrease number of coins
31		output the number of payouts?
32		general-purpose output
33		analog output
34		output character data, e.g. to LCD
35		output the total number of coins?
36		subtract payouts?
37		general-purpose output 2
38		general-purpose output 3
Manufacturer-specific
60-7F		reserved for manufacturer-specific commands