Chip identification - help please

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rubber_jonnie
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Chip identification - help please

Post by rubber_jonnie »

I was wondering if anybody recognised the company that made this ROM from the logo (The 2 wavy lines):

PXL_20220620_094253877.jpg
PXL_20220620_094253877.jpg (260.22 KiB) Viewed 536 times

It looks damn familiar to me but I can't remember the manufacturer name and I don't want to scrape off the label any further just yet. Ultimately I am trying to dump it for preservation and also want to leave the physical ROM as unsullied as possible, but I need the correct manufacturer for it to work with my TL866 Pro.

Any ideas folks?

TIA
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Re: Chip identification - help please

Post by exxos »

National semiconductor.
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rubber_jonnie
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Re: Chip identification - help please

Post by rubber_jonnie »

exxos wrote: Mon Jun 20, 2022 11:04 am National semiconductor.
Ahh, of course, thank you!
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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rubber_jonnie
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Re: Chip identification - help please

Post by rubber_jonnie »

Still didn't work until I told it not to check the chip ID.

Successfully dumped now.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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