The information contained in this document on how to program the different GAL types is not based on any official papers from the manufacturers, (see http://www.repairfaq.org/filipg/HTML/LINK/F_pal_gal.html), but are collected from many different sources and some work of myself:

c't 9/90 12/92 http://www.heise.de
GAL Programmer
16V8/A/B+20V8/A/B

c't 1/90 2/90 4/94 http://www.heise.de
GAL-Extender für c't EPROP
16V8/A+20V8/A+22V10+6001

Elektor/Elektuur 3/92 http://www.elektor.de
GAL-Programmer
16V8+20V8

Das GAL Buch
Hack/Hoffmann
Elektor Verlag http://www.elektor.de/
16V8/A/B+20V8/A/B

Schaltungstechnik mit GALs
Bitterle/Nosswitz
Franzis' Verlag http://www.franzis.de
ISBN 3-7723-4683-9
Approx. US$40
16V8/A/B/C/D/Z/ZD + 18V10/B + 20V8/A/B/C/D/Z/ZD + 20RA10/B + 20XV10/B + 22V10/B/C + 26CV12/B/C + 6001/B + 6002B
PCB and preprogrammed GALs appox. US$100, kit appox. US$180

Electronics Now 5/94
Ralph G. Brown http://www.alta-engineering.com
PLD-GAL-Programmer
16V8/A/B + 20V8/A/B + 22V10/B
uses 8255 PC ISA card

Frank Polzer
GALProgrammer V2.0
16V8/A/B + 20V8/A/B
http://stud1.tuwien.ac.at/~e9225140/info.html
uses preprogrammed PIC16C55, includes PCB layout

Christian Habermann
GALer V2.1
16V8/A/B + 20V10/A/B + 22V10 + 20RA10
mailto:Christian.Habermann@t-online.de
for Commodore Amiga

There is absolutely no guarantee on the completeness or correctness of this information.