Unknown model MSX TurboR with modem and serial

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بواسطة Manuel

Ascended (19060)

صورة Manuel

18-11-2015, 23:11

Hmm, so this NIA-2001 has 32kB SRAM, while the Panasonic FS-A1ST has only 16kB? So another aspect in which it's more GT-like than ST-like... (GT also has 32kB SRAM.)

بواسطة zeilemaker54

Champion (343)

صورة zeilemaker54

18-11-2015, 23:17

I think the serial port at the back is standard MSX-SERIAL version 1.0 hardware, so no MSX-MODEM.
My assumption is that the phone ports at the back are controlled by I/O ports 020H-02DH. They are being used in the add-on cartridge along with the MSX-serial ports. A first glance at the code shows already a I/O port for, what I think, dialing (0-9, #, *)

بواسطة mars2000you

Enlighted (6346)

صورة mars2000you

18-11-2015, 23:28

mars2000you wrote:

I've also found a very simple way to bypass the screen inviting to insert the AUCNET cartridge : you just need to patch the RS232C rom at offset 2004 by replacing C9 by 00. No more need to press 6 keys at the same time to access to the MSX-BASIC screen !!! Wink

It also means that the RS232C rom can always be correctly mapped for the config in blueMSX. No more risk to get excessive free memory for BASIC if you boot while pressing the SHIFT key to disable the DOS2 rom !

Additionnal info for Manuel : as openMSX uses only the 4096 Kb ROM, you need to patch this rom at 2 different offsets (the RS232C rom seems to be 'mirrored') : at offset A004 and at offset 4A004.

The patched rom has sha1 value cd6d8b121152bf7b0dc5921022b1832ad589cc55. I think you should add it in the xml file for the comfort of the openMSX end-users.

بواسطة Manuel

Ascended (19060)

صورة Manuel

19-11-2015, 07:16

Thanks, but i will not add a patched ROM. That does not fit in our accuracy philosopy.

بواسطة mars2000you

Enlighted (6346)

صورة mars2000you

19-11-2015, 13:27

But end-users can add it to the xml file, you can't prevent that ! Wink

For me, it's the same thing as adding patched roms to the database.

بواسطة NYYRIKKI

Enlighted (5982)

صورة NYYRIKKI

19-11-2015, 14:03

I agree with Manuel here... Cheats and patches are fine, but should not be mixed up with original ROM dumps. People should know when they use patched machines and when not. As long as we know only one real machine there should be only one checksum. (Missing checksum does not prevent using of patched ROMs as long as the name matches) Game ROMs are a bit different thing as we can use devices like MegaflashROM to play patched versions and openmsx needs the info to select correct mapper type.

بواسطة gdx

Enlighted (5849)

صورة gdx

19-11-2015, 14:05

NYYRIKKI wrote:

I agree with Manuel here... Cheats and patches are fine, but should not be mixed up with original ROM dumps.

I agree too.

بواسطة l_oliveira

Hero (534)

صورة l_oliveira

19-11-2015, 14:08

Guys, let's get back to the stuff what matters here.

About the SRAM, is there any means of some of you making a program to test where the SRAM is accessed and if it's identical to the SRAM on the A1GT?

بواسطة sd_snatcher

Prophet (3596)

صورة sd_snatcher

19-11-2015, 16:52

openMSX supports on-load IPS patching of the ROMs doesn't it? I used this feature for the AcidTest Machines, to keep it in accordance to the openMSX guidelines.

My suggestion is to keep the ROM original, and add an IPS patch to the XML file.

بواسطة Manuel

Ascended (19060)

صورة Manuel

19-11-2015, 19:49

The whole point of this machine is that you get it how it is. It's not added for convenience, but to see how this system is working. Then you need its original behaviour too.

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