VOGONS


First post, by Warlord

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Toshiba put a yamaha XG in the 2805 series laptops.
The XG implementation is that the codec sits on IRQ 11 as a PCI device and the legacy sound system is mapped to IRQ 7.
On my model the Geforce 2 go is mapped to IRQ 5 which isn't an issue.

Setting up the laptop so that you can use the XG in pure dos isnt that hard as long as you follow my advice.
I have tested Prince of persia, decent, doom etc all works fine. In decent you can use sbpro for effects and OPL3 as music. Though id recommend playing games that have General Midi in 98 under dos box because the native wave table of the XG is pretty good. It's quality is up there with Roland.

Warlord wrote on 2020-10-19, 21:53:
Drivers Modified DOS Driver for Toshiba 2805 Series. download/file.php?id=94316 VXD Drivers http://cdgenp01.csd.toshiba.com/cont […]
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Drivers
Modified DOS Driver for Toshiba 2805 Series.
download/file.php?id=94316
VXD Drivers
http://cdgenp01.csd.toshiba.com/content/suppo … s/t820snd95.exe

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Last edited by Warlord on 2020-10-19, 22:15. Edited 3 times in total.

Reply 1 of 9, by Warlord

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Many people ask me If I would consider selling my 2805-S402. Short answer is no, long answer is there is no availability. I have not seen another, so I might not get a chance to ever own another. It is hard enough to find a good 2805 series, it seems impossible to find the one I got that has the geforce 2 go.

However I will give a guide here that should work on getting the 2805 series sound working in pure DOS and 98 properly that should apply to all the other models.

1. To go into BIOS press ESC and it will prompt you to hit F1.
2. 1st page configure parallel port as std-bi direct
3. Press page up or down to go into 2nd bios screen. You want to change Config to all devices instead of by os.
4. For parallel port select not used.

Windows Config
5. Install windows 98
6. You want to use the VXD drivers for windows I will link to to.
7. Go to device manager select the parallel port and manually change the resources. That means uncheck automatic settings.
go through the basic configurations until you find the setting that doesn't use and IRQ. On mine that is setting 003. Then Save that and I went ahead and disabled the port anyways.
8. for sound a video game controller you want to click on the legacy sound system, again you want to manually set the resources. Try Basic configuration 2. Change to IRQ7 DMA 1 io 220-220f, 388-038f, 330-0331f etc These are the like the default legacy values.

For Dos.
1. You have to use the modified 810/815 driver I'll link.
2. The SET Blaster Parameters. are SET BLASTER=A220 I7 D1 T4
3. I already configured this in the driver I am going to link here. But if you use the one off Phils computer page you need to change somethings to get it to work.
4. If you use some other driver than the one for here. Be advised that the one from phils has the wrong environmental variables set up in the batch file and you need to change that.
5. To configure you go "YMFIRQ 11" without quotes at the command prompt.
6. Type SETUPDS Change it to S-IRQ and then you can change it to I7 220 D1 ETC. With the driver I will link it should already be setup for you. Then save.
7. Then to run the driver you type Loadtsr at the command prompt that's all.

Last edited by Warlord on 2020-10-19, 23:11. Edited 3 times in total.

Reply 2 of 9, by Warlord

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PiCS

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Reply 3 of 9, by Warlord

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Reply 4 of 9, by Warlord

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Drivers
Modified DOS Driver for Toshiba 2805 Series.
download/file.php?id=94316
VXD Drivers
http://cdgenp01.csd.toshiba.com/content/suppo … s/t820snd95.exe

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Reply 5 of 9, by Warlord

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Drivers
Modified DOS Driver for Toshiba 2805 Series.
download/file.php?id=94316
VXD Drivers
http://cdgenp01.csd.toshiba.com/content/suppo … s/t820snd95.exe

Unpack Dos driver to C:\Yamaha It should just be Yamaha and all the files not Yamaha\Yamaha or anything else.

Fresh DS.INI if you run into any trouble. Use this only if its not letting you modify SETUPDS and save it.

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Reply 8 of 9, by Prez

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vorob wrote on 2020-11-15, 06:14:

Sir, do you know if this laptop supports native dos sound? Satellite 2805-S503
https://support.dynabook.com/support/staticCo … omTOCLink=false

AKM4543 chip?

Pure crap !
It's like a YMF743. It's just an AC97 soundchip. Everything about Soundblaster and legacy sound has been discarded.
Its meaningless to try to use this to play DOS games in native DOS.

Yamaha has made this to try to match costless solutions. The Toshiba SP4600 has the same soundshit.

Best regards
Philippe Dubois

Old computers and videogames freak
President of french association https://mo5.com
Get better, get old ! 😁