Kamerat wrote on 2021-02-03, 09:32:

I'm trying to get my AWE64D CT4600 to work under DOS, but I can't find any tool to initialize it. I poked around with some PCI registers and got the legacy ports enabled by setting register 41h bit 7 to 0. The FM synth and the MPU-401 interface are working by doing this, but I have to boot into Windows and exit to DOS to get the FM sound unmuted. Also tried to modify the PCI registers of the 82371EB southbridge for letting DMA 1 and 5 available for PC/PCI (got a SBLINK cable connected). Sound Blaster "emulation" works under Windows even without the SBLINK cable connected.

Is there someone that got the AWE64D working under DOS that can help me out? I can't find much information on this card online. 😀

I'm not sure if you even can use it in DOS. I searched it up and found it's an OEM card. I wish I had one of those cards, as my Windows 98 PC doesn't have any ISA slots whats so ever.

Is it not supported by unisound?

SamsungASUS wrote on 2021-02-03, 21:53:

I'm not sure if you even can use it in DOS. I searched it up and found it's an OEM card. I wish I had one of those cards, as my Windows 98 PC doesn't have any ISA slots whats so ever.

It's a bit weird if it can't be used under DOS as Creative invented(?) and included a SBLINK (PC/PCI) connector on the card for ISA DMA and IRQ compatibility.

maxtherabbit wrote on 2021-02-03, 23:58:

Is it not supported by unisound?

Only ISA PNP cards are supported by Unisound, this is a PCI card.

Now I actually got the cards Sound Blaster 16 part to initialize and working under DOS (confirmed with Duke Nukem 3D), but it's still muted. If I boot and exit Windows to get the card unmuted it somhows screws the cards DMA.

Here is how I initialized the card, note that I commented out the DMA 5 part since it wouldn't work, but DMA 1 works just fine in SB16 mode (Duke Nukem 3D needs manual editing of DUKE3D.CFG to allow this).

1@echo off
2rem Enable legacy addresses?
3d:\prog\pciset\pciset 0003 1102 41 10000000 00000000
4rem Enable serial IRQ or set IRQ to 5?
5d:\prog\pciset\pciset 0003 1102 43 10000000 10000000
6rem Set DMA 5 to PC/PCI mode in southbridge.
7rem d:\prog\pciset\pciset 7110 8086 91 00001100 00000100
8rem Set DMA 1 to PC/PCI mode in southbridge.
9d:\prog\pciset\pciset 7110 8086 90 00001100 00000100
10SET BLASTER=A220 I5 D1 H1 P330 T6
11SET SOUND=C:\SB16
12c:\sb16\diagnose.exe /s

Edit: Reserved IRQ 5 in the BIOS BTW.

Here are all the PCI registers I managed to identify when playing around with different settings of the Sound Blaster emulation in Windows.

1Sound Blaster low DMA
2 Register 40h bit 7-6
3   0	00
4   1	01
5   3	11
6
7Sound Blaster IRQ
8 Register 41h bit 1-0
9   5	00
10   7	01
11   9	10
12  10	11
13
14Enable Sound Blaster?
15 Register 41h bit 7
16  Dis	0
17  Ena	1
18
19Sound Blaster address
20 Register 42h bit 1-0
21  220h	00
22  240h	01
23  260h	10
24  280h	11
25
26MPU-401 address
27 Register 42h bit 3-2
28  300h	00
29  310h	01
30  320h	10
31  330h	11
32
33Adlib address
34 Register 42h bit 5-4
35  388h	00
36  38Ch	01
37  390h	10
38  394h  11
39
40Joystick address (not all listed)
41 Register 43h bit 3-0
42  200h	0000
43  208h  1000
44  20Fh  1111
45
46Enable IRQ?
47 Register 43h bit 7
48  Ena	0
49  Dis	1