User`s manual
Notes 
statements are used to store information about the Jam 
file. The information stored in NOTE fields may include 
any type of documentation or attributes related to the 
particular Jam program. 
Source file 
contains a program in Jam language. Jam program 
consists of a sequence of statements. Jam statement 
consists of a label, which is optional, an instruction, and 
arguments, and terminates with a semicolon (;). 
Arguments may be literal constants, variables, or 
expressions resulting in the desired data type (i.e., 
Boolean or integer). Each statement usually occupies 
one line of the Jam program, but this is not required. Line 
breaks are not significant to the Jam language syntax, 
except for terminating comments. An apostrophe 
character (') can be used to signify a comment, which is 
ignored by the interpreter. The language does not specify 
any limits for line length, statement length, or program 
size. More informations can be found on the website: 
http://www.altera.com/support/devices/programming/jam/
dev-isp_jam.html.
Jam file with extension .jbc is Jam STAPL Byte code 
format which is not visible. 
Converting JED file to Jam STAPL file for XILINX 
devices: 
1. install Xilinx Integrated Software Environment (ISE) 6.3i 
software free download: WebPACK_63_fcfull_i.exe + 
6_3_02i_pc.exe (315MB or so) 
2. run Xilinx ISE 6/Accessories/iMPACT 
• in dialog “Operation Mod Selection: What do you 
want to do first?” choose: “Prepare Configuration 
Files”, 
• in dialog “Prepare Configuration Files: I want create 
a:” choose: “Boundary-Scan File”, 
• in dialog “Prepare Boundary-Scan File: I want create 
a:” choose: “STAPL File”, 
• in dialog “Create a New STAPL File” write name of 
Jam file with extension .stapl, 
• in dialog “Add Device” select JED file with extension 
.jed, 
• in the created jtag chain select device e.g.: XC2C32A 
(left mouse button) and select sequence operation (e. 
g.: Erase, Blank, Program, Verify; right mouse 
button), 
• in menu select item “Output/Stapl file/Stop writing to 
Stapl file” 
135










