identify Contaq chips

Contaq [PCI vendor ID 1080]
acquired by Cypress Semi in 1994

dl $ info 82C596 82C596 A

82C591 + 82C592 (write back enabled)
82C596 (486, CPU interface, VESA bus interface, ISA bus controller, write back enabled)
82C597
[0600] 82C599 (486, PCI - ISA/VL bridge, 82C596 or 82C597 for VL support)
[C691] 82C691 Cypress OEM
[C639] 82C693