National Instruments MXI Getting Started page 61

Glossary
W
Word Serial Protocol
write posting
PCI-Based MXI-2 Interfaces for Windows 2000/NT/Me/98
The simplest required communication protocol supported by
message-based devices in a VXIbus system. It utilizes the A16
communication registers to transfer data using a simple polling handshake
method.
A mechanism that signifies that a device will immediately give a successful
acknowledge to a write transfer and place the transfer in a local buffer. The
device can then independently complete the write cycle to the destination.
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