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Veronica – ROM Board

Img 1044

Veronica – ROM Board @ Blondihacks.

It seemed so simple. The best ideas always do. However, sometimes the smallest problems end up taking the most time to solve. There was some swearing, I won’t lie.

You see, I had a really swell circuit that could take a ROM image and dump it into an SRAM. Since parallel EEPROMs exist that are accessed just like SRAMs, I figured I could just buy one, drop it in, and presto- ROM for Veronica. Flawless plan, right?

Well, a hundred hours or so later, it turns out the plan was in fact pretty darn solid, but the parts were against me. To recap,  I designed a board for Veronica that would hold an EEPROM chip, and had a built-in ATTiny that acted as an interface between the EEPROM and my USBTinyISP programmer. Since EEPROM programmers are very expensive, this was a way to leverage the tools I had to program the ROM that Veronica needs to boot up.

Read more, Veronica continues


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