Newbie - Dewoo CPC-400s. Memory prevents running MSX software

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By Grauw

Ascended (10603)

Аватар пользователя Grauw

28-09-2015, 00:29

NYYRIKKI wrote:
Grauw wrote:

I know! I was hoping it was an openMSX issue… Smile Surely Sunrise IDE and MFRSCC+SD and MSX-DOS2 can handle RAM in slot 0.

Well... There are other possibilities in this machine as well... The BIOS is quite a much hacked together and the disk ROM implementation is not perfect either.

Yeah, I noticed the MSX2 logo was missing as well.

NYYRIKKI wrote:
Quote:

Surely the above mentioned don’t commit that sin?

Well... If you have the ROMs & openMSX in hand, changing the openMSX config would be quite easy to test.

Ok, I tried… Replacing the diskROM in slot 2 with the RAM from slot 0-2 did not change make the Sunrise IDE work (well, files now gives “bad drive name” in stead of “disk I/O error”).

By Grauw

Ascended (10603)

Аватар пользователя Grauw

28-09-2015, 00:32

Oh! MegaFlashROM SCC+ SD does work fine. I had accidentally inserted it in a slotexpander in openMSX (oops). Only Sunrise IDE has troubles (maybe not if you use the Nextor firmware…).

I now see a beautiful Korean Won-sign (₩) in stead of the backslash (\) character in Multi Mente Smile.

I also tried the Vampire Killer ROM on the emulated CPC-400S with MegaFlashROM SCC+ SD in openMSX, it works fine.

By NYYRIKKI

Enlighted (5938)

Аватар пользователя NYYRIKKI

28-09-2015, 00:35

maxis wrote:
Grauw wrote:
maxis wrote:

So, in general, your CPC400 is an entirely normal MSX2 machine and all the classical tested software does work with it w/o any problem.

Yeah, I think so too, I think there are any hardware modifications needed at all?

That is exactly my point too.

I get your point of view just as well... If we take a CPC-400 and change the hardware config, it will not be a CPC-400 anymore... It will be "just" a "dull", "normal" MSX2. It would render the local software cracks useless or in the worst case even unplayable! (If you have done there same mistakes as we have done here in Europe)

I'm also internally fighting with this if KURILSHIK sells me the machine... One one side this looks like a perfect "project computer" where chips are in sockets, there is plenty of space to do modifications and hardware seems robust. On other side I would not like to change one thing because it is exactly this weird unique implementation of MSX2 that has it's own very special characteristics that seem like problems to rest of the world... Anyway if I would turn in to preservation mode then KURILSHIK would be probably very disappointed. Smile For me this hobby has two sides... On one side I want to fix & modify and on other side I would like to collect weird, unique hardware... Maybe I just need to try to get two Tongue

By NYYRIKKI

Enlighted (5938)

Аватар пользователя NYYRIKKI

28-09-2015, 00:43

Grauw wrote:

Ok, I tried… Replacing the diskROM in slot 2 with the RAM from slot 0-2 did not change make the Sunrise IDE work (well, files now gives “bad drive name” in stead of “disk I/O error”).

If you changed the places then there is still a problem... IIRC the original diskROM of this machine does not work in subslots... better to try just to insert the RAM to slot 3.

By maxis

Champion (512)

Аватар пользователя maxis

28-09-2015, 00:46

NYYRIKKI wrote:

One one side this looks like a perfect "project computer" where chips are in sockets, there is plenty of space to do modifications and hardware seems robust. On other side I would not like to change one thing because it is exactly this weird unique implementation of MSX2 that has it's own very special characteristics that seem like problems to rest of the world... Anyway if I would turn in to preservation mode then KURILSHIK would be probably very disappointed. Smile For me this hobby has two sides... On one side I want to fix & modify and on other side I would like to collect weird, unique hardware... Maybe I just need to try to get two Tongue

Ha-ha, so you need at least 2 machines Wink I'm in the same boat with MSX HW artifacts.

By Grauw

Ascended (10603)

Аватар пользователя Grauw

28-09-2015, 00:51

NYYRIKKI wrote:
Grauw wrote:

Ok, I tried… Replacing the diskROM in slot 2 with the RAM from slot 0-2 did not change make the Sunrise IDE work (well, files now gives “bad drive name” in stead of “disk I/O error”).

If you changed the places then there is still a problem... IIRC the original diskROM of this machine does not work in subslots... better to try just to insert the RAM to slot 3.

I replaced (removing the diskROM). I had also tried placing the RAM in slot 3, no change.

By NYYRIKKI

Enlighted (5938)

Аватар пользователя NYYRIKKI

28-09-2015, 01:10

Grauw wrote:

I replaced (removing the diskROM). I had also tried placing the RAM in slot 3, no change.

Hmm... Then I think it must be related to the custom BIOS or other slot 0-x extension softwares. (I don't believe this is in anyway openMSX related)

By KURILSHIK

Supporter (6)

Аватар пользователя KURILSHIK

28-09-2015, 17:02

NYYRIKKI wrote:

I get your point of view just as well... If we take a CPC-400 and change the hardware config, it will not be a CPC-400 anymore... It will be "just" a "dull", "normal" MSX2. It would render the local software cracks useless or in the worst case even unplayable! (If you have done there same mistakes as we have done here in Europe)

I'm also internally fighting with this if KURILSHIK sells me the machine...

If you do not very want to change the internal configuration Daewoo (breaking its harmony), it's not a big problem. Maybe even better. The machine, in any case, I am ready to send to you. One of these days I'll go to the post office and see the details of international shipment.

What is my problem? A try explain. I just heard (I myself have not tried it yet) that Daewoo not run big games (greater than 32 kb). I heard it on the Russian forums. And many Russian forum users have expressed a bad opinion in this regard (about CPC-400). That's why I had the idea to improve the Daewoo.

If I understand correctly, what have said the others panelists, the problem is not in Daewoo, not in its compatibility with standard OpenMSS, but with Ruska crack programs? For example, if I take a normal (not break) a game, write it to a floppy disk (I do not have another i/o devices), will it work?

Sorry for my reasoning , I am totally newbie. Also with poor knowledge of English. Smile

By maxis

Champion (512)

Аватар пользователя maxis

29-09-2015, 19:11

KURILSHIK wrote:

What is my problem? A try explain. I just heard (I myself have not tried it yet) that Daewoo not run big games (greater than 32 kb). I heard it on the Russian forums. And many Russian forum users have expressed a bad opinion in this regard (about CPC-400). That's why I had the idea to improve the Daewoo.

Have you tried the original disk games yet (Aleste 2 for example)? They all should work. And, BTW, your memory config is not unique. MSX2 VICTOR HC95 also has the main memory in the slot 0-2. So, if even Japanese made the top line desktop with such a memory config, IMHO, there is nothing criminal. Simply the badly cracked SW can't work with it.

If you would like to play famous MSX2 Konami titles, you can buy a second hand SCC cartridge and build this:
SCC FLASHROM comprehensive description
All the system SW, including Leonid Baraz DBG, TOR etc, does work straight away on this machine.

By Manuel

Ascended (18844)

Аватар пользователя Manuel

29-09-2015, 20:22

Aleste 2 works fine on the CPC-400 (tried in openMSX). Just like other cool games like Firehawk and Psycho World.

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