JAM / STAPL ("Standard Test and Programming Language") is an

Altera Altera Corporation is a manufacturer of programmable logic devices (PLDs) headquartered in San Jose, California. It was founded in 1983 and acquired by Intel in 2015 before becoming independent once again in 2025 as a company focused on developm ...

-developed standard for

JTAG JTAG (named after the Joint Test Action Group which codified it) is an industry standard for verifying designs of and testing printed circuit boards after manufacture. JTAG implements standards for on-chip instrumentation in electronic design ...

in-circuit programming of

programmable logic device A programmable logic device (PLD) is an electronic component used to build reconfigurable digital circuits. Unlike digital logic constructed using discrete logic gates with fixed functions, the function of a PLD is undefined at the time of m ...

s (PLDs). It is defined by JEDEC standard JESD-71. STAPL defines a standard ''.jam'' file format which supports in-system programmability or configuration of programmable devices. A JTAG device programmer implements a ''JAM player'' which reads the file as a set of instructions directing it to program a PLD. The standard is supported by multiple PLD and device programmer manufacturers.

References

{{Comp-eng-stub JEDEC standards Electronics manufacturing Embedded systems