ac97: Update supported controller list on readme

Author: richardg867

ac97/README.md

@@ -4,7 +4,13 @@ DOS and Linux tool for probing AC'97 audio controllers and codecs.
 
 Usage
 -----
-Run `ac97` on a system with an Ensoniq AudioPCI (Creative Sound Blaster PCI), VIA or Intel AC'97 audio controller. **On Linux, make sure all relevant `snd_*` modules are unloaded to avoid interference.** On the first stage, audio controller information will be displayed on screen. On the second stage, AC'97 codec registers corresponding to optional features will be probed, and a register dump will be displayed and saved to `CODbbddf.BIN` where `bb`=bus, `dd`=device, `f`=function where the controller is located.
+Run `ac97` on a system with one or more of the following audio controllers. **On Linux, make sure all `snd_*` modules are unloaded** to avoid external interference.
+
+* Ensoniq AudioPCI or Sound Blaster PCI (except ES1370/5507)
+* Sound Blaster Live! or Audigy
+* Intel, Nvidia or VIA AC'97
+
+On the first stage, audio controller information will be displayed on screen. On the second stage, AC'97 codec registers corresponding to optional features will be probed, and a register dump will be displayed and saved to `CODbbddf.BIN` where `bb`=bus, `dd`=device, `f`=function where the controller is located.
 
 The optional `-s` parameter makes the second stage silent, only saving the codec register dump to file, which is useful if multiple audio controllers are being probed at once.