Zonie Posted October 7, 2018 Share Posted October 7, 2018 Does anyone know what companies fabbed the mask roms for Atari? Were they done in California? Taiwan? Both? Who? NSC? TSMC? others? Quote Link to comment Share on other sites More sharing options...
kevtris Posted October 7, 2018 Share Posted October 7, 2018 A lot of companies made chips for Atari. They seemed to like AMI though, which is American Microsystems, not to be confused with the BIOS maker AMI. They also used IMP, Synertek, and later OKI, UMC, and others fab their chips as well. VTI was used by plenty of 3rd part game makers such as Activision for their bankswitched ROMs, the Pitfall 2 chip, and the RAM+ carts made by CBS. Several companies were making the custom bankswitched ROMs contemporary at that time, such as the F8 and F6 bankswitching schemes. Atari used VTI for the 7800 Maria. If you count Tengen, Motorola seems to be the main supplier for the ROMs and mappers and "Rabbit" lockout chip clone on their NES titles. 2 Quote Link to comment Share on other sites More sharing options...
Zonie Posted October 8, 2018 Author Share Posted October 8, 2018 Know what the technology node was? I got into Semi at 0.5um when we started using CMP (polishing) for device layer planarization. Quote Link to comment Share on other sites More sharing options...
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