On Wed, Dec 18, 2019 at 2:55 AM Al Kossow via cctalk <cctalk@classiccmp.org> wrote: > On 12/17/19 9:30 AM, Will Cooke via cctalk wrote: > > An ad was emailed to me today with an interesting item: RCA 1802 > > processors. > > Not a bad price, did you buy any?
Definitely a good buy if you don't need to go faster than 3.2MHz with +5V Vcc (I have at least one 1802 board with a socketed oscillator so I can use an NTSC colorburst crystal (3.579545 MHz) on a divide-by-2 to run at 1.7897725 MHz for use with a CDP1861 "Pixie" video chip, or swap that out for a 5Mhz or 6Mhz crystal for faster operation). The CDP1802BC can go up to 5MHz with a 10MHz oscillator on the same board. > Were they actually RCA-branded parts from the 70's? Curious to know too but I'd expect a Harris part just because of general availability. -ethan
