Dumping/reverse engineering MSX models thread | MSX Resource Center (Página 12/28)

Por mars2000you

Enlighted (6402)

13-12-2020, 18:05

More info and pictures here:

http://usbsecretbase.michikusa.jp/hb-t600/video.html

http://usbsecretbase.michikusa.jp/hb-t600/modem.html

http://usbsecretbase.michikusa.jp/hb-t600/fdd.html

http://usbsecretbase.michikusa.jp/hb-t600/fdc.html

http://usbsecretbase.michikusa.jp/hb-t600/ram.html

http://usbsecretbase.michikusa.jp/hb-t600/cxd1032.html

http://usbsecretbase.michikusa.jp/hb-t600/msx-system.html

http://usbsecretbase.michikusa.jp/hb-t600/img/cpu.jpg

The Kanji-ROM is the ROM marked Sony on this picture:

http://usbsecretbase.michikusa.jp/hb-t600/img/kanji_rom.jpg

Por sdsnatcher73

Prophet (3810)

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...

Por sdsnatcher73

Prophet (3810)

13-12-2020, 19:42

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

Por Gradius2

Hero (652)

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.

Por theNestruo

Champion (398)

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

Por mars2000you

Enlighted (6402)

29-12-2020, 20:47

Thanks! Wiki updated

Por msxholder

Champion (399)

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.

Por Manuel

Ascended (19227)

30-12-2020, 00:31

What is the 'correction board'?

Por meits

Scribe (6530)

30-12-2020, 00:46

old glue on old caps can look suspicious

Por sdsnatcher73

Prophet (3810)

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?