On 2015-Oct-29, at 10:22 AM, Jon Elson wrote: >> - Another topic: what is a Honeywell Alert machine? Searches are just >> bringing up some current-day "Honeywell Instant Alert" messaging system. > It was a 24-bit DTL machine designed for the X-15 project, and then used in a > number of other projects. It is about 25 Lbs (without memory), draws 25 A at > 5 V, and runs off a 3 MHz clock. It is constructed of 6 multilayer PC boards > with ceramic flat packs on both sides. The boards are attached to a > motherboard with flexible PCB, so there are no connectors inside the machine. > They chose this for reliability, it makes it REALLY hard to work on. There > are cold plates between the boards that conduct heat down to the baseplate. > The instruction set was apparently modeled after some Honeywell business > machine of the time. It has no floating point hardware, but DOES have > hardware multiply and divide. > > I have gotten it to run, sort of. Since I have no memory for it, I can jam > op codes into the data in plug and observe the speed at which the memory > address ripples.
Very neat, too bad the memory is gone. Is building a new memory with modern stuff a consideration (enough documentation .. )?
