Vhd interface for victor hc90/95

And i could not find any VHD language command strings from VHD interpreter code, because VHD high level language is only used to write the game code. Then that language is compiled to hex bytes(VHD intermediate language), and these have common encode/decode values for every commands(+parameter bytes):

These bytes are written to disk and read by VHD interpreter.

Why in IF-C9D rom there is jump table starting from 4010h address (AB string is at 0x4000), as in init part there is no jump table setting or interrupt handling overriding?

In this table there are jump to separate routines:
-send initial string command ( 18h,"H01:RD:R0:A0\rRS0F0\r" ) to port
-to send one character to port (character value is given as input in register A), so user have to call it again with separate value and also call one time to give that ending \r char.
-inquire VHD system status(so sends R1, R2, or R2 to port and inquires back 7 bytes and calculates the proper value for return values)
-inquire G,C, or T value (so sends RG, RC, or RT to port and inquires back 7 bytes and calculates the proper value for return values)
-some unknown function...as there are many OUT 0x1, A OUT 0x3, A OUT 0x5, A OUT 0x7, A OUT 0x9, A . not sure if it got deassembled correctly. And it does not help that Ghindra deassembler does not know Z80 opcode 0xED 0x39 0xXX at all...

Also there are no usage to call these routines. There are separate almoust as if dublicate routines for these inquire commands ( R1/R2/R2/RG/RC/RT), and those are executed when VP basic command is given to inquire those values (e.g. VP("G",VAR1 ). So strange that those are not optimised to use just same calculation functions. And are these extra routines then just left there from C9C accidentally...

Anyway it would seem there is no interrupt related jump table, so the interrupt line connection would be useless in IF-C9D case. So it must be in schematics to get dynamically that VHD interpreter data, as in the book it is said that there can come dynamically commands.
current dissambler output in html can be found from https://github.com/popolonx/MSX_STUFF/blob/main/vhd_c9d_card...

The problem atm is to get the ROM of a IF-7900, IF-7910 or IF-C9C interface because only these interfaces have the CALL VHD instruction, that is used for VHDpc products.

The IF-7510 and IF-C9D interfaces have only the CALL VP instruction. This instruction does not allow the interactivity provided by VHDpc.

VHD intermediate language program from disk could be dumped using the IF-C9C card, as the command to activate the data transfer can be given with VP command. Then just have to record the data stream with logic analyser.
VP("RP") is command to enable data transfer
VP("RD") is command to disable data transfer.
Without giving that VP("RP") command, the audio channel containing data is not send from VHD player to VHD interface card.
And in 80C49 rom code there are all code that would be in IF-C9C case also (interaction code with that second 80C49). So only that decoding/fetching is missing.