On Mon, May 8, 2017 at 8:35 PM, John Ball via cctalk <[email protected]> wrote:
> So it seems in the early days of the PET a company by the name of > Forethought Prouducts sold an expansion module called the BETSI which > plugged into the expansion bus of the PET and gave you four S100 slots. If > you google around you can find a flyer advertising the unit and optional > power supply and the owners manual which touches on assembly, component > locations and the schematics. It talks about adding sound voards, > additional > video outputs, expanding ram and attaching directly to a larger S100 frame. > Beyond that I can find absolutely nothing else about it, much less a more > recent photo of one. Has anyone here ever used one? How practical were they > in reality? Suppose I went and built one. Does anyone have the PCB layout > templates so I could get a board etched or will I have to stick to the > schematic and build one by hand? > > -John > > At VCF SE Don French talked about the S100 expansion he created for the TRS 80 Model 1. Guess these did not meet with much success.
