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Guide to JTAG file formats There are a number of diffferent file formats that are compatible with the 1149.1 JTAG standard. AP-SELECTOR supports all popular formats, which enable universal programming and configuration support for JTAG devices STAPL (Standard Test and Programming Language) is a high level language designed specifically for CPLD ISP programming. STAPL is the JEDEC standard version of the original Jam Language created by Altera. Jam-Byte Code (JBC) File is simply a different implementation of the JAM/STAPL file. The Jam (STAPL) Byte-Code (JBC) Player is used to program JBC files into programmable logic devices (PLDs), memories, and other compliant devices in a JTAG chain. The JBC File is a binary version of the JEDEC JAM/STAPL File (.JAM) which is in ASCII text format. Like JAM/STAPL files, all Data & Programming/Test algorithms are contained within the JBC file. The files are compiled using a Jam STAPL Byte-Code Compiler - which takes a standard format JAM file created by the Altera Quartus II software, for example, and converts them into the JBC file. This binary implementation results in smaller file sizes and shorter programming times. Serial Vector Format (SVF) is a vector exchange format designed to enable transfer of boundary scan vectors between tools. SVF is expressing test patterns for IEEE 1149.1-based (JTAG) tests. The standard was jointly developed by companies Texas Instruments and Teradyne, and was originally designed for programming devices in-circuit using Automatic Test Equipment (ATE). Control over the format has been handed off to boundary-scan solution provider ASSET InterTech. The most recent revision is March 1999. |
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