Solid State Logic Soundscape Mixer Manual De Usuario

 
 
 
 

Page 98 of 109  

 

 

10. Troubleshooting 

 

Hardware installation problems 

 
Several problems relating to the installation of PCI cards are listed below. 
 

 
Typically for PCs that have 5 PCI slots there are 4 PCI slots and 1 AGP slot, but as there are only 4 
IRQ lines assigned to PCI, there will sometimes be one IRQ line that is shared between two slots. 
This interrupt line is connected on the motherboard to two slots (e.g. PCI slots 4 and 5) and 
therefore even if Windows or the BIOS tries to assign a different IRQ to each card fitted in these 
slots, it will be unable to, and this may cause problems. The solution may be to move the card to 
another free card slot in the PC. 
 
A similar situation exists with on-board devices (i.e., on the PC motherboard) like VGA, SCSI, PS2, 
USB and network adapters where the IRQs assigned will have to be the same as for some of the 
PCI slots. Typically the AGP slot uses the same IRQ line as the nearest PCI slot. 
 

 
The drivers for other PCI devices may not allow sharing. In any case DO NOT share IRQs between 
a Soundscape audio card and a PCI card from another manufacturer unless you are absolutely 
sure that the other device’s driver allows sharing. Most on-board devices will share IRQs with a 
Soundscape audio card without problems. 
 

 
The BIOS of the PC usually includes settings for Auto or Manual IRQ selection for each of the PCI 
slots. You may experience severe problems if the BIOS does not allow Windows to change or 
assign the IRQ during installation, due to conflicts between different PCI cards or on-board 
peripherals like serial or parallel ports. For normal use, the Auto setting should be selected for 
each PCI slot, so that the IRQ and memory settings are managed correctly. Only change this if you 
are fully aware of the requirements for each of the devices in your PC and of the potential 
consequences. If an APIC (Advanced Programmable Interrupt Controller) option is available in the 
BIOS, enabling it will provide additional interrupt resources. 
 

 
Incorrect PCI bus settings in the BIOS can create clicks, audio interruptions and even lock-ups. If a 
PCI Latency Timer parameter is available in the BIOS, set it to 64 or higher.