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1994-05-07
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┌─────────────────────────────────┐
│ DMP Frequently Asked Questions │
└─────────────────────────────────┘
If you have a question you would like to ask me, check this file first
so that I don't have to answer to so many similar questions.
═══════════════════════════════════════════════════════════════════════════════
Q: I can't get DMP to play through my PC speaker (or LPT DAC system)
with higher frequencies than 10kHz.
A: You have probably installed some 386 memory manager like EMM386
or QEMM386. These programs induce great overhead for DAC playing
and should not be used with DMP when playing through these devices.
Q: DMP doesn't seem to work under OS/2?
A: True, OS/2 doesn't support the DMA mode DMP uses to transfer data.
Q: I have Internet mail access. How can I get new DMP most easily?
A: By joining the DMP mailing list. Just send a message to
listserv@oliver.sun.ac.za with following message body
subscribe DMP-LIST Your Name
After joining, you will receive new DMP releases right into
your own mailbox. You also need uudecode utility to extract
DMP.
Q: I can't handle the size of the mail from DMP-LIST. Is there any
other way to get information on DMP updates?
A: You can also join another DMP list, called DMP-talk. This list
is intended for discussion about DMP and it is also used for
notifying about new DMP releases.
Q: The left and right channels are reversed on my SB Pro, but if I
press 'F' or 'S' to switch filter/stereo, left and right
channels sometimes switch places.
A: Yes, this is a bug in the SB Pro hardware, but I'm working on
to get the left and right channels go OK in the first place.
There is nothing I could do about those filter/stereo switches.
Q: I'm having troubles with my PAS16. The music is just plain
static, what's going wrong?
A: Problem here is that, for some odd reason, DMP transfers one
single byte before actual music transfer starts, leading to
noise, because the bytes are reversed in 16-bit data. This only
happens with 8-bit DMA, so you should try 16-bit DMA channels
5,6 or 7.
Q: EMS is great bu when are you going to add XMS support?
A: To DMP, never! Accessing XMS from a real mode program is way too
slow to use in an application like DMP. I will create a totally
new player using Watcom C/C++, that will run in 386 protected
mode and can access all the memory you have (like PMP).