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by Eye
Mon Jan 19, 2015 8:04 pm
Forum: V-USB
Topic: USB MIDI Interface
Replies: 93
Views: 72520

Re: USB MIDI Interface

I've found a solution for the latency (slow interrupt transfer) problem in Windows 7 32-bit. You have to patch usbport.sys file. USBPORT_OpenEndpoint() function in the USB port driver limits polling period to 8-32 range. Here is the lower limit checking code: 00009e18: 3c08 cmp al, 8 // compare with...

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