> MUSIC & SOUND CARDS > Sound Blaster (Moderator: Marten) > The Need for a True Game Blaster
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robertmo
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« Reply #80 on: November 29, 2009, 07:57:13 PM »
Are there any Game Blaster back pictures to check whether it uses IRQ or DMA? Or does anyone already know it?
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mace
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« Reply #81 on: November 29, 2009, 09:15:08 PM »
Quote from: robertmo on November 29, 2009, 07:57:13 PM
Are there any Game Blaster back pictures to check whether it uses IRQ or DMA? Or does anyone already know it?

I believe there are even entire schematics floating around.
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robertmo
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« Reply #82 on: January 06, 2010, 06:54:59 PM »
Cloudschatze made some tests.

Autodetection method is not very complicated:

1. So what games/programs expect card to do is just mirroring value written to 226 port so it can be read from port 22a.
2. Same with 227->22b
3. Same with 227->22a
4. Also 224 is always read with 7f
For point 1. some games try to interfere port 22a by writing sth there too.

All GameBlaster games/programs work in dosbox SVN now Smiley
« Last Edit: January 08, 2010, 09:45:51 PM by robertmo » Logged
jharris01
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« Reply #83 on: January 06, 2010, 07:35:47 PM »
That's great news!
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Great Hierophant
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« Reply #84 on: January 08, 2010, 05:46:15 AM »
Quote from: robertmo on January 06, 2010, 06:54:59 PM
Cloudschatze made some tests.

Autodetection method is not very complicated:

1. So what games/programs expect card to do is just mirroring value written to 226 port so
it can be read from port 22a.
2. Same with 227->22b
3. Also 224 is always read with 7f
For point 1. games try to interfere port 22a by writing sth there too.

All GameBlaster games/programs work in dosbox SVN now Smiley

Has anyone found a PC or DOS game that utilizes the noise channels or envelope generator of the SAA-1099 chips found in the Game Blaster and Sound Blaster 1.0 and upgradeable in the 1.5 and 2.0?  It always seemed as if the companies were using it as an adlib emulator and not taking care of its full capabilities. 
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robertmo
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« Reply #85 on: January 08, 2010, 06:01:18 PM »
In cms drivers package there is INTELLIGENT ORGAN floppy with installer that makes it possible to install one of two drivers for organ:

1. Cubic Audio I/O Card (for Cubic CT or XT users with Audio I/O Card)
2. CMS Music Synthesizer Card

After choosing Cubic Audio I/O Card I found out with dosbox port logging that it doesn't have auto detection and uses different ports than CMS Music Synthesizer Card:

220 -> 4a0
221 -> 4a1
222 -> 4b0 
223 -> 4b1
« Last Edit: January 08, 2010, 06:04:30 PM by robertmo » Logged
endre1952
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« Reply #86 on: January 14, 2010, 12:05:30 PM »
Battle Chess 2 does let you select CMS Game Blaster for sampled sound effects. Seems to work in DosBox, I cannot test it on real hardware - it seems hopeless to get the chips for my SB 2.0, and I haven't found anything older for a reasonable price...
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robertmo
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« Reply #87 on: January 14, 2010, 01:44:33 PM »
I have tested Battle Chess 2 in this thread
http://queststudios.com/smf/index.php/topic,2590.0.html
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