Zeile 11: Zeile 11:
 
[[Bild:texton_case_4.jpg|200px|Casing]]
 
[[Bild:texton_case_4.jpg|200px|Casing]]
  
pcb, main:
+
main pcb:
  
 
[[Bild:texton_pcb_top.jpg|200px|PCB Top]]
 
[[Bild:texton_pcb_top.jpg|200px|PCB Top]]
Zeile 17: Zeile 17:
 
[[Bild:texton_pcb_detail.jpg|200px|PCB Detail]]
 
[[Bild:texton_pcb_detail.jpg|200px|PCB Detail]]
  
pcb LCD bottom:
+
daughter board bottom:
  
[[Bild:texton_lcd_board_bottom.jpg|200px|PCB LCD bottom]]
+
[[Bild:texton_lcd_board_bottom.jpg|200px|daughter board bottom]]
  
 
== Chip References/Datasheets ==
 
== Chip References/Datasheets ==

Version vom 11. Mai 2011, 03:10 Uhr

target being used as an example for the EmbeddedAnalysisWorkshop2011.

This is an old Hebrew to German/English/French/etc electronic translator. As I doubt there is JTAG the interesting objective would be looking for serial and dumping/modifying the memory and software. The memory and other chips appear to either be rebranded or made in house. Re-documentation might be required (and interesting). Determining the purpose of the unused expansion board might also be interesting.


Photos

Casing Casing

Casing Casing

main pcb:

PCB Top PCB Bottom PCB Detail

daughter board bottom:

daughter board bottom

Chip References/Datasheets

  • Daewoo DMC60C31E CPU (datasheet). Datasheet provides footprint but no programming details. Might need to look at other Daewoo chipsets.
  • GoldStar GM76C88AL-15 65,536 Bit Memory (datasheet with footprint and read/write details)
  • TextOn 9636 "5 Dictionaries"
  • TextOn SEP 96 DEH 42

Pin/Via/Pad clusters

  • 34 pin unpopulated expansion? One could assume this is for programming dictionaries but the area of the case for the pins leaves a huge space to place additional components.

Interesting markings and observations

Thoughts/Todo

  • Map and trace to determine pinout of TextOn ICs as well as expansion board
  • Examine the daughter board IC's and purpose