Thanks for measured information and superb pictures that can help to create clone board. Wow, you are lucky to have this hardware that you bought from the doctor. I tried to get one for years but ebay sellers want to sell for several thousand dollars. That is why I gave up and seek to create clone front panel. For physical appearance, it will be impossible to make 100 percent as original one.
I will try to work the board though KiCAD program. Hopefully, group from S-100 can help each other's to work this project. Thanks, Steven On Thursday, September 18, 2014, Kipp Yeakel <[email protected]> wrote: > I will try to do this tomorrow. One of my systems came from a doctor's > office, I bought it from the doctor. It was in daily use generating his > billing, back then. I did the usual capacitor change and contact cleaning, > and she has been running ever since. This is one of the machines that has > no diode pack. > > Kipp > > Sent from my iPad > > On Sep 18, 2014, at 10:18 PM, Steven Feinsmith <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > > Hi, > > Can you kind to measure your DSP-1 front panel board in length for me then > I will get prototype board at correct length. Also check with height too. > > I also received email message from my old friend in California and he > checked his DSP-1 and said he did not have "Diode Pack" installed. It is > possible that part was an optional item. > > I will build the prototype without "Diode Pack" and then add it later to > compare bus signals. > > Thanks, > Steven > > On Saturday, September 13, 2014 3:00:10 PM UTC-4, Steven Feinsmith wrote: >> >> Hi everyone, >> >> I have very little documentation for Ithaca Intersystems DPS-1 system. >> This device was last manufactured before S-100 become obsolete due to Apple >> and IBM hit the market in 1980's. The front panel for DPS-1 system was one >> of the best designed. Nowdays, there were impossible to find it. I reviewed >> components that used for the front panel were available from varies sources. >> >> But one component, IC7 as labelled as "Diode Pack". I realized there was >> no information about it. I looked the schematic showed "HEADER" contained >> D0-D7 (Data Bus) to AM25LS2521PC, Eight Bit Equal To Comparator (AM = >> Advanced Micro Devices) connected for Data Breakpoint (Low) and Breakpoint >> Enable (Low). Other side connected to front panel DATA switches. Between >> "Header" and AM25LS2521PC, there are "Diode Pack" as IC7. The "Diode Pack" >> hook up with D0-D7 bus, +5 volt and ground. That is all what the schematic >> showed. >> >> What do you think about inside the "Diode Pack". Perhaps array of diodes? >> Perhaps pull-up or pull-down resistors? >> >> I enclosed a manual, "A FRONT PANEL FOR THE S-100 BUS" by Ithaca >> InterSystems, Inc, 1979. The company languished in the 1980's, not being >> part of the domination of the IBM PC and PC clones. The company was dead >> for more than 30 years ago. Hopefully, you have skill to find out what is >> inside of the diode pack. >> >> It would be nice for N8VEM group to create clone version of this >> wonderful front panel. By the way, you know about "Header" is capable to >> run 16-bit system by add 8 data buses, more data switches and more data >> LEDs. IT may sounds like a big challenge for us to create new generation of >> front panel board. Good idea? >> >> Thank you, >> Steven >> >> >> -- > You received this message because you are subscribed to a topic in the > Google Groups "N8VEM-S100" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/n8vem-s100/9P7W7r9UfJ8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <javascript:_e(%7B%7D,'cvml','n8vem-s100%[email protected]');> > . > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "N8VEM-S100" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/n8vem-s100/9P7W7r9UfJ8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <javascript:_e(%7B%7D,'cvml','n8vem-s100%[email protected]');> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
