Dumping/reverse engineering MSX models thread

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By sdsnatcher73

Prophet (2327)

sdsnatcher73's picture

13-12-2020, 19:37

Okay the ROM is there, maybe an issue with the ROM itself or the surrounding logic. Also the cap next to the VDP is leaking...

By sdsnatcher73

Prophet (2327)

sdsnatcher73's picture

13-12-2020, 19:42

Guess I will have to take it to Omega for repairs.

By Gradius2

Hero (626)

Gradius2's picture

19-12-2020, 23:51

sdsnatcher73 wrote:

I purchased a Japanese HC-7, I will dump the ROMs as soon as it arrives.

Sent an e-mail for ya.

By theNestruo

Champion (323)

theNestruo's picture

29-12-2020, 20:05

I have an Spanish HC-7E. I can confirm the BIOS is the same as the HC-7GB BIOS that can be found online:

C: ... >fc /b hc7ebios.rom hc7gbbios.rom
Comparing files hc7ebios.rom and HC7GBBIOS.ROM
FC: no differences encountered

By mars2000you

Enlighted (6014)

mars2000you's picture

29-12-2020, 20:47

Thanks! Wiki updated Smile

By msxholder

Champion (393)

msxholder's picture

29-12-2020, 22:27

The capacitor is NOT leaking they glued an isolator on top, the "HBI interface is resting on it".
Your Hb T600 has some modifications the second drive connector is added.
The ram is expanded to 256 kB
It lacks the correction board.

By Manuel

Ascended (18239)

Manuel's picture

30-12-2020, 00:31

What is the 'correction board'?

By Meits

Scribe (6458)

Meits's picture

30-12-2020, 00:46

old glue on old caps can look suspicious Smile

By sdsnatcher73

Prophet (2327)

sdsnatcher73's picture

23-01-2021, 06:12

I have this HBP-F1C (not yet unpacked). It comes with the disk so I can dump it, the Wiki says a ROM dump is also needed. That would require the ROM to be removed and dumped from a programming tool, right? Or can it be read via the MSX?

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