[alsa-devel] [PATCH] ALSA: Support Media Vision Jazz16 chips

[Rene Herman]

On 03/27/2007 10:14 PM, Rask Ingemann Lambertsen wrote:

(dropped Adam Belay from the CC)

> Texas Instruments/Acer TravelMate 5000 series has one on-board. 
> Interestingly, the User's Reference Guide lists 1, 3, 5 and 7 as
> valid DMA channels for both 8-bit and 16-bit playback. Since the chip
> is only capable of half-duplex AFAIK, why have two DMA channels? What
> am I missing?

Nothing much I'd say. As far as I know, the card's half-duplex. I just 
now installed the Media Vision DOS driver (*) and it allows the 
following settings. Defaults starred:

Jazz I/O Port:		210, *220, 230, 240, 250, 260 (<-- align 10?)
Jazz IRQ:		2, 3, *5, 7, 10, 15
8 bit DMA:		*1, 3
16 bit DMA:		1, 3, *5, 7
MPU-401 Enable:		Yes (<-- yes, no "No")
MPU-401 I/O Port:	300, 310, 320, *330
MPU-401 IRQ:		*2, 3, 5, 7 (<-- you're also listing 10 and 15?)
CD ROM Port:		320, *340

That "CD ROM Port" seems to be a version glitch; mine only has an NCR 
SCSI chip with a 2x8 pin connector but the install asked  me if I had a 
Sony, Panasonic or Mitsumi CD-ROM (those old proprietary CD-ROM interfaces).

Not much idea what that 1 and 3 are doing under "16-bit DMA". Things do 
seem to work when I pick 1 for the 8-bit and 3 for the 16-bit. But the 
DOS drivers at least don't list 5 and 7 as valid 8-bit DMAs...

(*) This driver: http://members.home.nl/rene.herman/jazz16.img

1440K FAT floppy image.

Would you happen to have a description of the DIP switches/jumpers? On 
mine, there's a red block of 8 DIP switches marked

MAB0 | MAB1 | DISMPU | DAB2 | DAB1 | DAB0 | DISJS | <empty>

which with the exception of the two DIS switches isn't completely 
self-evident; especially not since the chip's not on the bus before 
being programmed to be through software. There's also two 2x3 jumper 
blocks J10 and J11 that I've no idea about.

Rene.