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dmp.faq
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1994-06-18
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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: When using reverbs I get a lot of cracks in the voice. What is
the problem?
A: Your computer doesn't enough power to handle the reverb effect.
Lower the sampling rate or use mono mode (if you were using
stereo mode). Also you can try to simplify the reverbs by
reducing the number of echos.
Q: Are digital effects available on GUS?
A: No. This is because GUS does all the sound mixing with its
processor and DMP cannot post process the digital sound data
to produce effects.
Q: I'm having troubles playing modules with GUS. Sometimes DMP
just doesn't play anything.
A: Try -gt switch to force the non-GUS timer mode.
This will also help in Windows.
Q: Are you going to add support for MED, or other formats popular
on Amiga?
A: No. I will only add support for formats that can be
edited/created on PC computers.
Q: When I try to use a DAC with DMP, the machine hangs. What is
wrong?
A: You are probably using some memory manager like EMM386 or QEMM.
These programs cause great overhead for DAC/PC speaker play
routine and if the overhead is too big, the machine will hang.
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: 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. Use DMP/32, player using
Watcom C/C++, which runs in 386 protected mode and can access
all the memory you have (like PMP).