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Re: Looking for Targa Win Tseng Labs ET4000 ROMs

Here you go, I noticed something interesting about the BIOS - both HIGH and LOW images are identical, I've also included XROM (sync BIOS) for completeness, all chips are mask ROMs of 27C256 EPROMs. Filename label+RAMDAC.jpg File size 554.71 KiB Views 185 views File license Public domain Filename …

Re: Gateway 2000 bad I/O board?

I wouldn't call myself a CRT specialist, but this chip must be the RGB video preamplifier, probably an LM1203 or some similar RGB preamp. The actual RGB amplifier stage is made using high power BJTs and should be located on the CRT neck board. If red color amplifier is OK and the preamp chip is …

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