Namida wrote:

I'll treat PC-88MC CD-Roms same as PC Engine games.
And yes you are right, there are only 2.5 titles :
The one given with PC-88MC2 system.
Mirrors.
And a reedition of Mirrors (same contents).

Well, that's not entirely true. There should be a total of 5 CD games for the PC88, if I remember correctly.
Mirrors, a sample disk named Takarabako, Duel CD, DIOS CD and another title which I don't remember.
As soon as I get home I'll check and post the full list.
The Mirrors reedition is the one done in the late '90s / early '00s ?
However, do you have a list of your 88 stuff? I'd like to give it a look. Thanks

Snake,
I think Mirrors is the only CD based game for the PC-88 (and you need to prepare a boot floppy to launch the game).
CD Takara-bako is also the one I was talking about (the CDrom given with the PC-88MC2), but it's not really a game (just a compilation of system demonstrations and a few playable game samples).
As far as I know the other ones (including Duel, I have proof of that) are normal 5.25 floppies + pure audio CD.
I may be wrong regarding Dios as the CD edition is so rare that I've never seen it, but I do think it's just the normal edtion + audio CD (do you have any clue or proof ? not just "it's mentioned here").
If you want to include games with separate audio CD, you'll have more than 5 games at the end.

I can send you a complete list of my PC-88 games, but it's not romanized at all.
Can you read Japanese ?

Fireball,
I think you're talking about the Windows version of Relics.
There is no CD version for the PC-88 (or I missed the train).

There should be a total of 5 CD games for the PC88, if I remember correctly.

Relics: The Recur of Origin (1986 BothTec) also, at least (was on fmv forum a few months ago).

I'll treat PC-88MC CD-Roms same as PC Engine games.
And yes you are right, there are only 2.5 titles :
The one given with PC-88MC2 system.
Mirrors.
And a reedition of Mirrors (same contents).

Well, that's not entirely true. There should be a total of 5 CD games for the PC88, if I remember correctly.
Mirrors, a sample disk named Takarabako, Duel CD, DIOS CD and another title which I don't remember.
As soon as I get home I'll check and post the full list.
The Mirrors reedition is the one done in the late '90s / early '00s ?
However, do you have a list of your 88 stuff? I'd like to give it a look. Thanks

So, do I put all my stuff on hold, too?

Yes. I also have dozens of them, but only one is dumped (for test) - and _there is_ a reason for that, lol.

Other known titles (a dozen) are floppy based + music only CD.

PC-98 is another story, they should be treated same as AT/PC CD-Roms.
But many of them require a floppy to boot, so my priority is to backup the floppy.

What's about CDs for them? PC-88 has a 2 or 3 titles ("Mirrors" and something else), PC-98 has MANY.

Of course not 
I won't until everyone agrees on how to make a perfect dump.
I am okay to spend several months to dump everything properly, but won't do it twice.
And I am not in a hurry anyway (PC Engine games are far from natural death).

Agree, the best solution for now.

Actually, we're focused on 1:1 dumping now, so the dev manuals won't be very helpful, I guess. I'll take a look, though.

What's about CDs for them? PC-88 has a 2 or 3 titles ("Mirrors" and something else), PC-98 has MANY.

And, I hope, PC-FX.

I hoped that my contribution with dev manuals could help, but I got zero feedback.

Until we all together find a solution, I concentrate on NEC PC-88 and PC-98 floppy games (using KryoFlux).
I have a large collection of 6000 (yes) games here.
All original with boxes and everything.
The history of the PC Engine is linked to older NEC Systems, so it's important to backup them as much as more recent CD games.

Now regarding PCE Hu cards, I have started redumping all properly.
No problem so far.

Rocknroms wrote:

You have to check subcodes (clonecd ones are the best) and probably dumping it with a audio trap cd.

Nope, no trap cd is needed, just a game and a plextor, but subs are needed and not the clonecd ones, so each dump can take an hour or two.

This is new, so which subs?

You have to check subcodes (clonecd ones are the best) and probably dumping it with a audio trap cd.

Nope, no trap cd is needed, just a game and a plextor, but subs are needed and not the clonecd ones, so each dump can take an hour or two.

My collection is mainly Japanese commercial titles (I also collect different versions of the same game).
But another collector I am in touch with has also a large amount of "not for sale".
He has the Popful Mail Sample disk for sure and many other titles not even listed.
Not sure about Lords of Thunder Demo disk (I'll ask him).

But anyway my priority is commercial titles.
After then, why not dumping other "not for sale" or prototypes.

PCE CDs dumping is quite complicated at first sight as said by Fireball. You have to check subcodes (clonecd ones are the best) and probably dumping it with a audio trap cd. By the way someone has already to write down a guide, all infos are here and there.
If you really want to contribute it's better you take contact with Fireball on irc or via private msg