[alsa-devel] [PATCH] ALSA: Support Media Vision Jazz16 chips
rene.herman at gmail.com
Wed Mar 28 01:11:35 CEST 2007
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.
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