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  sunshine PE1ABR


A collection of  sunshine PE1ABR  EW-904B and EW904BN oriented diagrams, add-ons and modifications


  sunshine PE1ABR

Links to reverse engineered EW904B and EW904BN drawings
Lots of add-on information


Drawings are in PDF format.
  Preferably copy to HD first

Reverse engineered and NOT available anywhere else,
but now for download available over here:

sunshine PE1ABR
Sunshine EW904B schematic pdf file - part 1 of 4
Sunshine EW904B schematic pdf file - part 2 of 4
Sunshine EW904B schematic pdf file - part 3 of 4
Sunshine EW904B schematic pdf file - part 4 of 4
Sunshine EW904B schematic pdf file - 1000H error - A13 modification

Sunshine EW904BN schematic pdf file - part 1 of 4
Sunshine EW904BN schematic pdf file - part 2 of 4
Sunshine EW904BN schematic pdf file - part 3 of 4
Sunshine EW904BN schematic pdf file - part 4 of 4


sunshine PE1ABR

©CopyRight,  modifications add-on design, drawings, photographs,
 gal programming, and research by: W.A.J.  Geeraert  ( PE1ABR )    email

Almost all the drawings are made available in PDF format.

You MUST have Adobe Acrobat reader installed, see at the bottom of this page.
I try to keep PDF's compatible as low as AR version 5, some even AR3 !
If problems: copy PDF files to harddisk first without double click, but with "copy to"



At Robert Madsen's place - More Sunshine info from me:


sunshine PE1ABR  Robert Madsen
Sunshine EW904 eprom programmer update and research info, info (c) WG

Sunshine EW904B A13 and more modification info, info (c) WG




Now some add-on hardware, diagrams and photos

A bankswitch adapter for the 27C1000/1001, 27C2000/2001
For standard JEDEC and ROM type versions

Circuit diagram in PDF
CAD-Layout in PDF part-1
CAD-Layout in PDF part-2
A nice adapter photograph - top view
A nice adapter photograph - bottom view
A set of Gal design files in ZIP format

The zip file over here is for both type of adapters - 27C1000 / 27C4000


  bankswitch adapter 27C1000 27C1001 27C2000 27C2001 sunshine PE1ABR



A bankswitch adapter only for 27C4000 eproms

Circuit diagram in PDF
CAD-Layout in PDF part-1
CAD-Layout in PDF part-2
A nice adapter photograph - top view

Also download the GAL ZIP file above


  bankswitch adapter 27C4000 eprom sunshine PE1ABR


Many TTL-PROM read-out adapters for an Eprom socket
Suitable for many, many types of TTL-PROMs
Designed for reverse engineering purposes

First version PROMS circuit diagram in PDF
Updated 2nd version PROMS circuit diagram in PDF
Special version adapter for the Philips MX294 PROMS in PDF
Add-on circuit for the first version read-out adapters in PDF
(In this add-on: more security circuits added, Vcc ON-led,
databus protection, forced pull-up or down for don't care bits)

A very complete PROM reference guide in PDF, over 40 different PROM
(and about 10 TTL RAM) footprint types in 2 varieties from over 15 manufacturers. Now over 50 pages!
Hacked from the net, copied, extended and edited
by me to give it a decent booklet shape:

The TTL PROM list, now V5 ! the print version

  TTL-PROM read-out adapter sunshine PE1ABR

And here a nice adapter
photograph - top view




A 2708 read-only / read-out adapter
Again designed for reverse engineering purposes

The contents of some 2708 devices were put in banks in a 2732 EPROM

Circuit diagram in PDF
Scanned old CAD layout
A nice adapter photograph


  2708 read-out adapter sunshine PE1ABR


A cheap PLCC-adapter to program PLCC EPROMS

I made use of (cheap) STANDARD PLCC sockets, NO ZIF version!!!!
For occasional use OK, removal with a special extraction tool.
(a.o. from Conrad / Germany: order code is 14 94 70 PLCC Tool
Price indication about 10 U.S. dollar or Euro)
I made 2 versions: one for 2764 / 27128 / 27256 / 27512 eproms.
and one for 27C010 / 27C020 / 27C040 eprom versions
A set of CAD layout files in PDF
How to assemble the sandwich construction - photograph
And there it sits on top of the ZIF socket - photograph


  plcc adapter sunshine PE1ABR



sunshine PE1ABR If you do not have the "Acrobat Reader",
please access to the site of Adobe Systems Incorporated.
The Acrobat Reader is distributed by Adobe Systems Incorporated free of charge.
Adobe, Acrobat Reader, and their logo marks are registered trademarks of Adobe Systems Incorporated.


Copyright© 2001 - 2010 Walter Geeraert - All Rights Reserved


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