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Amstrad ROM Expander

335 bytes added, 10:46, 25 August 2011
[[Image:Rom_Expander.jpg|right|thumb|320px|Self-built version of the Rom Expander]]
 
The Amstrad ROM Expansion was published 1988 in the Practical Electronics magazine by Simon Dean. It is possible to use up to six expansion ROMs (16 kB each) with the board.
Because there are only a few parts needed, the price of the board is inexpensive.
 
 
== Part List ==
C7 22uF elect
IC1 74LS32
IC2 74LS37374LS374
IC3 74LS138
IC4 74LS02
D1 1N4148
</pre>
 
 
Note: There is a contradiction in the original documentation below. In the parts list, IC2 is listed as 74LS373, this is incorrect, it should be 74LS374 as shown in the circuit diagram on page 1.
== Resources ==
* [[FileMedia:Amstrad rom expander.pdf]]
[[Category:HardwareExpansion ROM]] [[Category:Peripherals]] [[Category:DIY]]
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