3.4 KiB
ACIO BIO2 IIDX package dump
Package dump excerpt of the init sequence of a original Konami IIDX BIO2 with sub IO connected. This was used to identify a missing piece of information that needs to be communicated to the BIO2 for IIDX to initialize the sub IO correctly.
The dump was cut off after two polls as the sequence just keeps on repeating from that point on.
Findings for problem to solve
With the previous implemention of the BIO2 driver, which was created off references of SDVX KFCA, a BIO2 used with IIDX and the sub IO (to upgrade older C02, IO2 cabinets) connected didn't initialize properly. This resulted in no inputs/outputs other than 14 keys working.
The problem identified was a different byte, exact meaning not known, that is sent in
exchange 4. Instead of 0x3B from the SDVX KFCA based
implementation, it needs to be set to 0x2D.
Exchange 1: AC_IO_CMD_ASSIGN_ADDRS
Write
AA 00 00 01 00 01 00 02
AA: SOF
00: addr
0001: AC_IO_CMD_ASSIGN_ADDRS
00: seq_no
01: nbytes
data: 00
02: checksum
Read
AA AA 00 00 01 00 01 01 03
AA: SOF
AA: SOF
00: addr
0001: addr
00: seq_no
01: nbytes
01: data
03: checksum
Exchange 2: AC_IO_CMD_GET_VERSION
Write
AA 01 00 02 00 00 03
AA: SOF
01: addr, node 1
0002: AC_IO_CMD_GET_VERSION
00: seq_no
00: nbytes
03: checksum
Read
AA AA 81 00 02 00 2C 0D 06 00 00 ...
AA: SOF
AA: SOF
81: Response flag + node 1
0002: AC_IO_CMD_GET_VERSION
00: seq_no
2C: nbytes
0D 06 00 00 ...: data
XX: checksum
Exchange 3: AC_IO_CMD_START_UP
Write
AA 01 00 03 00 00 04
AA: SOF
01: addr
0003: AC_IO_CMD_START_UP
00: seq_no
00: nbytes
04: checksum
Read
AA AA 81 00 03 00 01 00 85
AA: SOF
AA: SOF
81: Response flag + node 1
0003: AC_IO_CMD_START_UP
00: seq_no
01: nbytes
00: data
85: checksum
Exchange 4: AC_IO_CMD_CLEAR
Write
AA 01 01 00 00 01 2D 30
AA: SOF
01: addr
0100: AC_IO_CMD_CLEAR
00: seq_no
01: nbytes
2D: data
30: checksum
Read
AA AA 81 01 00 00 01 00 83
AA: SOF
AA: SOF
81: Response flag + node 1
0100: AC_IO_CMD_CLEAR
00: seq_no
01: nbytes
00: data
83: checksum
Exchange 5: BIO2_BI2A_CMD_WATCHDOG
Write
AA 01 01 20 00 02 00 00 24
AA: SOF
01: addr
0120: BIO2_BI2A_CMD_WATCHDOG
00: seq_no
02: nbytes
00 00: data
24: checksum
Read
AA AA 81 01 20 00 01 00 A3
AA: SOF
AA: SOF
81: Response flag + node 1
0120: BIO2_BI2A_CMD_WATCHDOG
00: seq_no
01: nbytes
00: data
A3: checksum
Exchange 6: BIO2_BI2A_CMD_POLL
Write
AA 01 01 52 00 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 84
AA: SOF
01: addr
0152: BIO2_BI2A_CMD_POLL
00: seq_no
30: nbtes
...: data
84: checksum
Read
AA AA 81 01 52 00 2E 00 00 B0 00 F0 00 F0 F0 00 00 00 00 00 02 00 5F 11 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F3
AA: SOF
AA: SOF
81: Response flag + node 1
0152: BIO2_BI2A_CMD_POLL
00: seq_no
2E: nbytes
...: data
F3: checksum
Exchange 7: BIO2_BI2A_CMD_POLL
Write
AA 01 01 52 00 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 84
Read
AA AA 81 01 52 00 2E 00 00 B0 00 F0 00 F0 F0 00 00 00 00 00 02 00 64 11 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F8