What is the maximum data rate of Sealevel synchronous serial cards?

  Sealevel synchronous serial products fall into three categories: ZiLOG Z16C32 based devices, ZiLOG Z85230 based devices and older ISA DMA channel cards. The fastest family of Sealevel synchronous serial products is built around the ZiLOG Z16C32 IUSC which has an onboard DMA controller. All Sealevel Z16C32 based products have 256K of onboard RAM that […]

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Why does my Sealevel synchronous adapter not show up as a COM port?

  Sealevel synchronous serial adapters enumerate as SeaMAC devices in Windows. Since the devices are zero-indexed, the first installed port will be ‘SeaMAC0’. SeaMAC devices support additional features that are not typically found on asynchronous serial adapters which enumerate as COM ports. Many banking, military, aerospace and other synchronous applications communicate using common synchronous serial […]

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