INTV clock
Morning,
Everyone knows that the NTSC INTV is clocked at 3.58MHz which is divided by 4 to give a machine cycle of 894KHz + change.
Except of course it isn't. The 7.16MHz crystal clocks the AY-3-8915 which divides it by 2 to clock the STIC at 3.58MHz. The STIC then generates the main system clocks 01 and 02. So the STIC divides the 3.58MHz NTSC clock by 4 generating 894KHz?
The CP1610 data sheets seem to suggest that machine cycles (or ucycles) are 2 clocks 01 / 02 periods in lengt
As you intimate, better for what? The CP1600 was a joint product designed by Honeywell's Process Control Division and GI's Microelectronics group. Where the practice was to bring the wires for every sensor and control in a plant into a single large room, like this,
Honeywell thought the way of the future was to distribute control processors around the plant and to use video terminals to communicate with those processors over a network. It started using PDP-11s for that purpose, the