Operation Under Gsif; Using More Than One Hammerfall Dsp - RME Audio Hammerfall HDSP 9652 User Manual

14. Operation under GSIF (Gigasampler Interface)
The GSIF interface of the Hammerfall DSP allows direct operation with Gigastudio, with up to
26 channels, 96 kHz and 24 bit. The new GSIF 2.0 is also supported with both audio and MIDI.
The GSIF latency of the HDSP 9652 can be set between 32 and 256 samples. Above 256, only
the ASIO latency will rise. Such a setting can prevent performance problems on slower ma-
chines when using ASIO and GSIF at the same time.
Please note that the Windows driver fully supports multi-client operation, including the combina-
tion WDM/ASIO. So for example Cubase, Gigastudio and Sonar can be used simultaneously,
provided each of these programs uses its own audio channels exclusively. For example ASIO
could use channels 1/2 and Gigastudio (with GSIF) channels 3/4 simultaneously, and so on.
Simultaneous operation of GSIF and ASIO requires to use different channels. For example,
if Cubase uses tracks 1/2 these tracks can not be used by Gigastudio.
Common Problems
Please note that Gigastudio is running unexpectedly in the background (thus blocking its as-
signed audio channels), as soon as the Gigastudio MIDI ports are used – even when Gigastu-
dio itself hasn't been started. This causes a lot of confusion, as the driver seems to behave
completely buggy, and the user does not recognize the simple reason for it – for example simul-
taneous operation of ASIO and GSIF on the same channels.
If Gigastudio starts up properly, loads gig files too, but won't play at all even when using the
virtual keyboard: Go to Hardware/Routing and select a valid MIDI input port. Note that blank is
not valid, but <none> is.

15. Using more than one Hammerfall DSP

The current drivers support operation of up to three HDSP 9652. All cards of the HDSP and
HDSPe system use the same driver, therefore can be used at the same time. All units have to
be in sync, i.e. have to receive valid sync information either via word clock or by using AutoSync
and feeding synchronized signals.
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If one of the HDSP systems is set to clock mode Master, all others have to be set to clock
mode AutoSync, and have to be synced from the master, for example by feeding word clock.
The clock modes of all units have to be set up correctly in their Settings dialog.
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If all units are fed with a synchronous clock, i.e. all units show Sync in their Settings dialog,
all channels can be used at once. This is especially easy to handle under ASIO, as the ASIO
driver presents all units as one.
Note: TotalMix is part of the hardware of each HDSP system. Up to three mixers are available,
but these are separated and can't interchange data. Therefore a global mixer for all units is not
possible.
User's Guide HDSP System HDSP 9652 © RME
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