dartec,
I followed your link, and the datasheet for the GLCD, and I found that the LED042 is actually a parallel GLCD called "AMPIRE 128x64" (with a "KS1018" firmware chip), connected to a PIC microcontroller programmed with "GLIC" software, converting it to a serial GLCD.
Different firmware chips have different instruction sets, so the serial GLCD I have suggested in my last post has a "sed1565" chip.