Patent ID: 6272561
Filing Date: 2001-08-07
Classification: G06F

Abstract:
The Auto-Detection method of sound blaster interface card, which enabling a computer system to automatically detect the indexes required for a sound blaster interface card being connected with said computer in a normal operation circumstance, comprising the steps of:(1) selecting a possible connection port for said sound blaster interface card, presuming said port selected is the correct one, delivering a Reset signal to said card, checking if an ""Acknowledgement"" being sent back from said card, and identifying said port selected as the correct port when said ""Acknowledgement"" being received;(2) selecting a possible Direct Memory Access (DMA) channel and presuming said channel selected is the correct one when the correct connection port being detected, then selecting a possible Interrupt Request (IRQ) and presuming said Interrupt Request (IRQ) selected is the correct one, delivering a play instruction to said card and checking if an Interruption being sent back from said card, and identifying the detection of said card being successfully completed when receiving an Interruption;(3) otherwise, selecting the next possible Direct Memory Access (DMA) Channel and presuming said channel is the correct one, then again selecting a possible Interrupt Request (IRQ) and presuming said Interrupt Request selected is correct, delivering a play instruction to said card and checking if an Interruption being sent back from said card, and identifying the detection of said card being successfully completed when receiving an Interruption.