Dozens & dozens of very happy customers all over the world!
This ROM set drops right in place of the OS ROMs in your Airbase 99. There are many labeled chips in the Airbase 99 but the ones you are looking for are 28 pins.
Why buy your ROM from me? I was the first to sell strictly brand new, newly manufactured, made in USA ROM chips, in a proper ESD certified environment. I only use OTP ROMs which are impervious to bit rot (data corruption!) I was not afraid to say this even though I knew others would realize the gig was up on selling recycled, quick-to-fail EPROM's. I am an AMERICAN BUSINESS who only sources my stock directly from other AMERICAN BUSINESSES - this means your purchase keeps our local economy going.
Not only am I shipping from within the USA same or next day, offering the best prices & lifetime support, I also am the ONLY ROM seller in North America paying royalty fees on every sale where it applies, and the ONLY ROM seller who has 10+ years of formal synthesizer & pro audio repair experience.
THANK YOU and never hesitate to write to me with any questions or concerns!!
And of course..... Free 30 day returns. No hassle, no problem. Instruction guidelines included. Thanks for looking =)