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2026-05-25 13:42:31 UTC
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gloriouscow on Nostr: I've got the ROM and RAM mounted in the address space. When the CPU starts, it zooms ...

I've got the ROM and RAM mounted in the address space. When the CPU starts, it zooms off doing something, but then gets stuck at a specific address. Maybe it's halting?

The next step is to add a single-step functionality - that will let me walk through the Space Invaders code listing one instruction at a time and make sure the CPU is actually working properly.

The DE-10 Nano has little user push buttons. Originally I was going to use those for insert coin and player 1 start, but we can multiplex their meaning based on how the user switches are set.