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README.md
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README.md
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# afterburner
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GAL chip programmer for Arduino
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This is a GAL IC programmer software that allows to program GAL IC chips
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from various manfucaturers. It is based on work of several other people:
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Bruce Abbott:
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http://www.bhabbott.net.nz/atfblast.html
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Manfred Winterhoff:
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http://www.armory.com/%7Erstevew/Public/Pgmrs/GAL/_ClikMe1st.htm
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who did the most of the hard work of deciphering and publishing the programming
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protocol of these chips. Their programs were Windows based and relied on
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presence of parallel port (LPT). Afterburner was written for Linux OS, and
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requires serial connection to Arduio UNO, which does the programming
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of the chip.
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Supported GAL chips:
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* Atmel ATF16V8B, ATF22V10B, ATF22V10CQZ
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* Lattice GAL16V8A, GAL16V8B, GAL16V8D
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* Lattice GAL22V10B
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* National GAL16V8
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Setup:
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* Upload the afterburner.ino sketch to your Arduino UNO.
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* Connect the pins of the GAL chip to Arduino UNO according to
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the schematics images. Ideally use a PCB (ether etched or made
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in a fab) that's provided in 'pcb' and 'gerbers' directory.
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You can also hardwire on protoboard or breadboard.
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* Compile the afteburner.c to get afterburner executable. Run
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./compile.sh to do that.
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* Set the programming voltage (VPP) on the voltage up-converter
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module (MT3608) depending on the GAL chip
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Atmel ATF16V8B - 10V
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Lattice GAL16V8 - 10V, also works with 12V
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Others - between 10 - 14V - untested
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* Check the programming voltage (VPP) without the GAL chip being
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inserted / connected to Arduino UNO. Test the voltage on MT3608
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module VOUT- and VOUT+ pins while running the following command:
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<pre>
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./afterburner s
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</pre>
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* Check the chip identification by runnig the following command:
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<pre>
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./afterburner i
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</pre>
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If you get some meaningfull GAL chip identification like:
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<pre>
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PES info: Atmel ATF16V8B VPP=10.0 Timing: prog=10 erase=25
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</pre>
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then all should be well and you can try to erase the chip and then
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programm it to contain your .jed file.
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If you get an unknown chip identification like:
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<pre>
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PES info: 3.3V Unknown GAL, try VPP=10..14 in 1V steps
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</pre>
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then look at the troubleshooting section
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* Read the content fo your GAL chip. This only works if the contents
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of the chip is not protected. Use the following command:
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<pre>
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./afterburner r -t [GAL_type]
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</pre>
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or to save the printed .jed fuse map to a file use:
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<pre>
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./afterburner r -t [GAL_type] > my_gal.jed
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</pre>
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* Erase the GAL chip. Before writing / programming the chip it must
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be erased - even if it is a branch new chip that has not been used
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before. Use the following command:
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<pre>
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./afterburner e -t [GAL type]
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</pre>
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* Program and verify the GAL chip via the following command:
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<pre>
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./afterburner wv -t [GAL type] -f my_new_gal.jed
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</pre>
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How aferburner works:
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---------------------
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* PC code reads and parses .jad files, then produces a binary which
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can be the uploaded to Arduino via serial port. By default
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/dev/ttyUSB0 is used, but that can be changed to any other device
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by passing the following option to afterburner:
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<pre>
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-d /my/serial/device
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</pre>
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* PC code of afterburner communicates with Arduino UNO's afterburner
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sketch by a trivial text based protocol. You can also connect directly
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to Arduino UNO via serial terminal of your choice and issue some basic
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commands manually.
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* Arduino UNO's afterburner sketch does 2 things:
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1) parses commands and data sent from the PC afterburner code
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2) toggles the GPIO pins and drives programming of the GAL content
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* more information about GAL chips and their programming can be found here:
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http://www.bhabbott.net.nz/atfblast.html
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http://www.armory.com/%7Erstevew/Public/Pgmrs/GAL/_ClikMe1st.htm
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Troubleshooting:
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----------------
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- it does not work!
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* double check the schematics and the connection between Arduino UNO and
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the GAL chip.
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* ensure the GAL chip is inserted to the IC socket the right way (check
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the pin 1 location)
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* ensure the VPP is set correctly on the MT3608 module. If unsure which
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voltage to use then try individual voltages one by one:
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10V, 11V, 12V, 13V, 14V, 15V. Do not go beyond 15V as you may damage the
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GAL chip.
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* measure the VPP only when the chip is physically DISCONNECTED. Some brands
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of the GAL chip (Atmel) - when connected - iternally lower the voltage
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on the Edit (VPP) pin (voltage divider?) and such voltage reading is misleading.
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* use an external power supply for your Arduino UNO, powering
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just via serial USB cable may not be sufficient for driving the GAL chip and the
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voltage up-converter
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- afterburner reports it can not connect to /dev/ttyUSB0, permission denied
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* ensure your user is member of the of the dialup group or alernatively run
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afterburner as superuser (use: sudo ./afterburner ...)
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- afterburner fails to connect to /dev/ttyUSB0
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* ensure your PC is actually connected to Arduino UNO, check a serial device
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exists:
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<pre>
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ls -alF /dev/ttyUSB*
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</pre>
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- my MT3608 module does not have EN pin
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* that's unfortanetly a common problem. You have to mod the module as follows:
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* cut the PCB trace between pin 4 & 5 of the MT3608 chip. Verify the trace
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is cut by continuity probe (no beep is audible) between pins 4 & 5.
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<pre>
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| Blue Potentiometer |
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|_________________________|
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| ______________
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| | |
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| | SMT Capacit. |
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| |______________|
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| 3 2 1
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| | | |
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| +-------+
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| | |
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| |4 5 |
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| +-------+
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| |X | |
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|<-- left long edge of the module
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</pre>
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* X marks the spot - here make the vertical cut. Do not cut the pins
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itself! Just cut the trace between the pins, which is only barely visible
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without magnification.
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![See the MT3608 image in img directory for more details.] (https://github.com/ole00/afterburner/raw/master/img/mt3608_mod.jpg "EN pin mod")
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* solder a thin keynar wire to pin 4 which is your ENable pin.
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* Once that is done, toggling the EN pin will change the output voltage
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of the module between 5V (actually slightly less than that) and the
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voltage set by the potentiometer (10V and more).
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- my MT3608 module does not seem to work - turning the pot does nothing
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* The pot needs to be turned at least 10 revolutions counter-clockwise
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to do anything useful. Keep trying.
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- where to get the MT3608 module ?
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* usual places: ebay, aliexpress
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- what are the .jed files and how to produce them
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* Use WinCupl software from Atmel. Works under Wine as well.
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https://www.microchip.com/design-centers/programmable-logic/spld-cpld/tools/software/wincupl
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