Dumping/reverse engineering MSX models thread

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Par sdsnatcher73

Prophet (3799)

Portrait de sdsnatcher73

14-05-2020, 12:53

Not exactly the same situation, NMS8250 was based on PHC-25J but clearly Philips and Olympia have had a hand in the final machine. Both the Olympia and Philips machines don’t share the mainboard with the machines they are based on! These Yamaha’s are all made by Yamaha sold as Yamaha with the same model number. I guess time will tell.

Par thegeps

Paragon (1153)

Portrait de thegeps

15-05-2020, 15:56

Par sdsnatcher73

Prophet (3799)

Portrait de sdsnatcher73

20-05-2020, 08:45

thegeps wrote:

Philips VG 8020-40 ROM dump

https://1drv.ms/u/s!Auz5lIVk2TPQcGq3wLC4rI8cQ3o?e=30EvTw

After stripping of the last 32kB of garbage the ROM is identical to the VG8020/20

Par sdsnatcher73

Prophet (3799)

Portrait de sdsnatcher73

28-06-2020, 20:40

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

Par bsittler

Master (247)

Portrait de bsittler

03-10-2020, 04:15

Are ROM's for Yamaha CX-5MIIF (French model with AZERTY layout and RGB as the only video option) already dumped? Is there any remaining uncertainty about this hardware which could be resolved with ROM dumps, test programs, or photographs of the internals?

Par bsittler

Master (247)

Portrait de bsittler

03-10-2020, 09:12

(It's a 64K CX-5MIIF, not the /128 model with more RAM; also I don't have the synthesizer/MIDI/keyboard module or voicing program mini-cartridge)

Par Manuel

Ascended (19196)

Portrait de Manuel

03-10-2020, 12:43

Yes, definitely interested and useful! I am not aware of any full dumps and pictures of this French model.

Par bsittler

Master (247)

Portrait de bsittler

05-10-2020, 16:20

Manuel wrote:

Yes, definitely interested and useful! I am not aware of any full dumps and pictures of this French model.

I'll see about photographing it next weekend, and will also attempt to share information about the system ROM's I dumped

Par bsittler

Master (247)

Portrait de bsittler

12-10-2020, 00:22

My apologies, this will take me at least one more weekend

Par Manuel

Ascended (19196)

Portrait de Manuel

12-10-2020, 01:07

Don't worry, no one is in a hurry Smile

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