Difference between revisions of "Motherboard Pictures"

From The Dragon Archive
(Added PC10087 Issue6 PN48127 Dragon 32 MKII board)
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Always labelled DRAGON DATA LTD CPU UK 32K MKII with either Issue 5 or Issue 6
 
Always labelled DRAGON DATA LTD CPU UK 32K MKII with either Issue 5 or Issue 6
  
'''16 x 16K MKII board (P/N PC10087 Issue 5, 258x178mm) :'''<br>
+
'''16 x 16K MKII board (PC10087 Issue 5, 258x178mm) :'''<br>
 
Please notice the two extra resistors to the left of the MC6847 VDG that does not appear on the [[Media:CPU_UK_MKII.png|old picture]].
 
Please notice the two extra resistors to the left of the MC6847 VDG that does not appear on the [[Media:CPU_UK_MKII.png|old picture]].
  
 
[[File:Dragon32_PCB_Top_(PC10087_Issue5).jpg|419px]][[File:Dragon32_PCB_Bottom_(PC10087_Issue5).jpg|404px]]
 
[[File:Dragon32_PCB_Top_(PC10087_Issue5).jpg|419px]][[File:Dragon32_PCB_Bottom_(PC10087_Issue5).jpg|404px]]
  
'''16 x 16K MKII board (P/N PC10087 Issue 6, 258x178mm) :
+
'''16 x 16K MKII board (PC10087 Issue 6, 258x178mm) :'''
  
 
[[File:Dragon32_PCB_Top_(PC10087_Issue6).jpg|419px]][[File:Dragon32_PCB_Bottom_(PC10087_Issue6).jpg|400px]]
 
[[File:Dragon32_PCB_Top_(PC10087_Issue6).jpg|419px]][[File:Dragon32_PCB_Bottom_(PC10087_Issue6).jpg|400px]]
  
 +
'''16 x 16K MKII board (PC10087 Issue 6 P/N 48127, 254x175mm) :'''<br>
 +
Seems to be the same as the other issue 6 board but manufactured on a different factory.
 +
 +
[[File:Dragon32_PCB_Top_(PC10087_Issue6_PN48127).jpg|408px]][[File:Dragon32_PCB_Bottom_(PC10087_Issue6_PN48127).jpg|400px]]
 
== Dragon 64 ==
 
== Dragon 64 ==
  

Revision as of 21:17, 15 December 2014

Pictures of Dragon Motherboards to help with identification.


Dragon 32 - Mark I

SA/OKI boards appear from the schematic to be virtually identical and may be populated with either 8 half good 64K chips mounted directly on the motherboard, or 16 x 16K chips, 6 of them on the motherboard and the remaining 10 on a patch board. This board seems to be the production version of the Pippin prototype, and was originally designed to be either a 16K board or a 64K board. The jumpers fitted just below the power connector at the top of the board are for routing the various voltages and control signals to the RAM chips depending on which sort are fitted.

16 x 16K board :

Always labelled (c) Dragon Data Ltd or (c) Dragon Data Services Ltd, Issue 2

Dragon32 PCB Top (PC10087 Issue2).jpgDragon32 PCB Bottom (PC10087 Issue2).jpg
Here is another picture.

8 x 64K board :

Always labelled (c) Dragon Data Ltd, Issue 2

SA 8x64K.png

One of the rarer boards was the Siemens board which was fitted with 8 x HYB4232, though in the example that I have for some strange reason these are double stacked, which suggests that they are like the 64K chips on the original board half good chips.

16 x 16K Siemens board :

Always labelled (c) Dragon Data Ltd, Issue 2

Siemens.png

Dragon 32 - Mark II

The most common variant of the Dragon 32 board is the MK II board, this board had 16 x 16K chips but had been re-designed to have all of the 16K chips on the main board. Always labelled DRAGON DATA LTD CPU UK 32K MKII with either Issue 5 or Issue 6

16 x 16K MKII board (PC10087 Issue 5, 258x178mm) :
Please notice the two extra resistors to the left of the MC6847 VDG that does not appear on the old picture.

Dragon32 PCB Top (PC10087 Issue5).jpgDragon32 PCB Bottom (PC10087 Issue5).jpg

16 x 16K MKII board (PC10087 Issue 6, 258x178mm) :

Dragon32 PCB Top (PC10087 Issue6).jpgDragon32 PCB Bottom (PC10087 Issue6).jpg

16 x 16K MKII board (PC10087 Issue 6 P/N 48127, 254x175mm) :
Seems to be the same as the other issue 6 board but manufactured on a different factory.

Dragon32 PCB Top (PC10087 Issue6 PN48127).jpgDragon32 PCB Bottom (PC10087 Issue6 PN48127).jpg

Dragon 64

British Dragon 64 Board (P/N CD41505, 258x200mm).

Dragon64 PCB Top (CD41505).jpgDragon64 PCB Bottom (CD41505).jpg

British Dragon 64 Issue 2A Board.

Dragon64.png

British Dragon 64 Board (P/N CD41505 Issue 3, 258x200mm) Dragon Data 1983.

Dragon64 PCB Top (CD41505 Issue3).jpgDragon64 PCB Bottom (CD41505 Issue3).jpg

Tano Dragon

The US Tano Dragon 64 motherboard, Part Number 48418/2. The Tano board is about the same size of a UK Dragon 32 board, as it didn't need the NTSC to PAL conversion circuitry.

Dragon Tano Issue 1 Board
DragonTano PCB Top.jpgDragonTano PCB Bottom.jpg

Dragon Tano Issue 2 Board
DragonTano Issue2 PCB Top.jpgDragonTano Issue2 PCB Bottom.jpg

Here is another picture (Note the wires in the bottom left are not normally there :) ).

Dragon 200

The Spanish Dragon 200 is the very same English Dragon 64 (P/N CD41505 Issue 3, 258x200mm), except for the power led connector on the lower left corner of the PCB.

Dragon200 PCB Top.jpgDragon200 PCB Bottom.jpg

Dragon 200E

Variant of the Dragon 200, with an extra character rom for lowercase letters and all spanish characters, and spanish keyboard.

Dragon200E PCB Top.jpgDragon200E PCB Bottom.jpgDragon200E VDG Piggyback PCB Top.jpgDragon200E VDG Piggyback PCB Bottom.jpg

Dragon Alpha

AlphaMainBoard.JPG

Dragon Beta

DragonBetaTop.jpg