identify Nexgen chips

Nexgen Microsystems [PCI vendor ID 1074]
acquired by AMD

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NxVL
NxVL
System Logic 
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VL82C501
VL82C501PSFC
 
     
         
[4E78] 82C500/1 Nx586 chipset
NxVL

NxPCI
VL82C500PSFC + VL82C501PSFC + intel S82378ZB