Just for fun

Discussions about Sinclair ZX80 and ZX81 Hardware
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dessony
Posts: 342
Joined: Tue Oct 29, 2013 2:26 pm
Location: Indiana, USA

Just for fun

Post by dessony »

Hello everybody,

I just wanted to see how the ZX81/TS1000's motherboard reacts to a broken ROM chip. I simulated the broken ROM chip by taking the chip off the motherboard. Very interesting result! After the ROM was off the motherboard, no black square and no white "K" cursor, and the screen was throbbed slightly dark and slightly bright repeatedly. :geek:
Before ROM chip removal
Before ROM chip removal
After ROM chip removal
After ROM chip removal
Cheers,
DesSony
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