Ocean’s Navy Seals Cartridge: Schematics

I am glad to share the schematics for Navy Seal’s Cartridge, which I have put together using the work available at c64-wiki.de as a baseline.

Essentially this is a very similar configuration as Terminator 2’s but with two EPROM footprints that can accommodate either 32-pin (e.g. a 27C010) or 28-pin chips.

The 128kB 28-pin EPROM used by Navy Seals is apparently quite difficult to source: the difference with standard 28-pin EPROMs is that this one has A16 on pin 22, rather than /OE (Output Enable).
This is definitely a quite flexible PCB design I’ve not seen photographed anywhere else so far 🙂

Navy Seals Ocean Cartridge - front of the PCB by Luigi Di Fraia
Navy Seals Ocean Cartridge – front of the PCB
Navy Seals Ocean Cartridge - Schematics by Luigi Di Fraia
Navy Seals Ocean Cartridge – Schematics
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DC2N4-LC PCBs manufactured and posted

Those interested in buying a DC2N4-LC because they didn’t get a chance to do so in the past, and those who would like to own a spare device for disaster scenarios, will be glad to know that the DC2N4-LC PCBs were posted by the factory that manufactured them!

Stay tuned for the announcement when devices will be for sale!

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DC2N4-LC re-stocking

Due to additional demand, I’ve just submitted an order for the components to build 10 more DC2N4-LC devices.

DC2N4 Low Cost fully operational by Luigi Di Fraia
DC2N4 Low Cost fully operational

Stay tuned for the announcement once they are available to ship!

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An Ultimax cartridge dumped too

I finally found an Ultimax cartridge to test my C64 Cartridge Dumper with, so here’s a test I did with it:

Stay tuned for more!

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Chase H.Q. II dumped too

I prepared the material for dumping my cartridge version of “Chase H.Q. II” so here’s a video of the process:

Lua scripts are available on GitHub here.

Stay tuned for more!

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How to easily remove a cartridge from my C64 Cartridge Dumper with a pencil

Easier to do than to write 🙂

C64 Cartridge Dumper: removing a cartridge with a pencil by Luigi Di Fraia
C64 Cartridge Dumper: removing a cartridge with a pencil
C64 Cartridge Dumper: removing a cartridge with a pencil by Luigi Di Fraia
C64 Cartridge Dumper: removing a cartridge with a pencil
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Alternative build of my C64 Cartridge Dumper

I shall be testing mechanical properties of the right-angle connector too…

C64 Cartridge Dumper: build with right-angle connection by Luigi Di Fraia
C64 Cartridge Dumper: build with right-angle connection

Fully built devices are available at 16 GBP + shipping, which, once again, helps me with the cost of those cartridges I had to acquire for testing purposes.

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