Ibara to Ibara Kuro solderless JTAG conversion

[buffi]

Since cv1000 bootlegs are plentiful and readily available nowadays, i guess it should be alright to talk cv1000 conversions now.

Ibara to Black Label is doable, as long as you are cool with not having the correct char select music.

More indepth details at
https://buffis.com/shmups/ibara-to-ibara-black-label-kuro-jtag-conversion/

 

[Fluffy]

Slightly off-topic: I'm trying to get into CPLDs that are programmed through JTAG, and there are an annoying number of vendor-specific tools that only work with one cable and their own devices, and some open source things of unknown development status.
So far I discovered http://urjtag.org/ and https://openocd.org/ as tools (though openocd seems to be overkill), https://github.com/dirtyjtag/DirtyJTAG and https://github.com/phdussud/pico-dirtyJtag, and I bought a clone Altera USB blaster ages ago (apparently there are cables with FTDI, the one I've got uses a PIC microcontroller).

Is https://github.com/tigard-tools/tigard the Tigard interface you mentioned? What is the advantage over other cables, mostly clock speed?

Also, what is taking so long in programming the flash, is it written using boundary scan? Would it be possible to poke a bootloader into RAM, and then use a faster protocol?

 

[XtraSmiley]

Awesome dude!

 

[buffi]

Is https://github.com/tigard-tools/tigard the Tigard interface you mentioned? What is the advantage over other cables, mostly clock speed

Yeah thats the one, and yeah it’s faster.

Also, what is taking so long in programming the flash, is it written using boundary scan? Would it be possible to poke a bootloader into RAM, and then use a faster protocol?

It’s pretty much bitbanging 128Mbyte of data in place. Unlike the prog rom, its not directly addressable from the sh3, so i’m doing some silly urjtag bitbanging. Doing something more complex might be faster, but probably a fair amount of work to get it working.

 

[leacnerd]

Im thinking to buy one of this bootlegs to the guy that you know of DoDonPachi SaiDaiOuJou because is so so pricey the original one, you say that you had reprogrammed the board to run ibara BL?

 

[buffi]

Im thinking to buy one of this bootlegs to the guy that you know of DoDonPachi SaiDaiOuJou because is so so pricey the original one, you say that you had reprogrammed the board to run ibara BL?

Ibara can be reprogrammed as Ibara BL with the disclaimer that some music will be different, as stated above.

It is not possible to reprogram boards to SDOJ or other games without soldering, since there are completely different sound roms (and also board types in that case compared to Ibara)

The bootlegs are complete reproductions of PCBs, so not relevant for the discussion in this thread.