Sounds good to see this board improved. May I suggest you to consider change for display because TIL113 was no longer made and many vendors overcharged for each module. One vendor representative told me the TIL113 components were in shortage and expect jack up the price.. I think it is not difficult to change into affordable LCD or OLED display from www.crystalfontz.com (or affordable display from eBay). So then it will give out more crisp display and capable to fit into the S-100 board.
Hopefully, you can redesign and use OLED module. Advantage with this device is wide angle view and faster response time. Thank you for your consideration... Steven On Saturday, March 1, 2014 10:36:27 PM UTC-5, monahanz wrote: > > Again back over 2 years ago Andrew and I put together an S100 bus “System > Support Board”. This board was designed to allow one to analyze many of > the hardware signals on the bus by “single stepping” the CPU, setting > hardware breakpoints etc. It worked in the busses 16B address space with > 8 and 16 bit CPU’s. > > Like the MSDOS Support board, it has proven to be very popular and > reliable. Many boards were already made and distributed to users. We > decided to add a few small changes to the board to improve its > functionality. We are calling this board the* “*V2 – System Support Board > *”*. The changes include:- > > *1. Add a circuit to allow any combination of the four TMA0-3 lines to be > activated. This allows up to 15 slave devices on the bus * > > *2. Latch all address lines for better display reliability with high speed > CPU's * > > *3. Optimize the reset circuit * > > *4. Optimize the single step circuit. * > > *5. Add a circuit to ground address lines A16-A23 when (older) non > IEEE-696 CPU boards are the bus master. * > > *6. Switch to a 3A TO-3 voltage regulator *A brief description of the V2 > board can be found here:- > > > http://s100computers.com/My%20System%20Pages/SMB%20Board/S100%20Bus%20SMB.htm#V2-SMB > > (Bottom of the page). > > Like the MS-DOS support board, there will probably be some interest is in > people obtaining a “commercial style” bare board like this. It would be > great if we could get a volunteer to organize a group purchase of boards. I > will definitely be getting 3 for myself. If you absolutely need one sooner > rather than later let us know we can include you in the early “first > batch”. Otherwise stay tuned for a later group purchase by (hopefully) a > group member that will organize a larger purchase - at a lower price. > > Please note this is a two board set. Besides the S100 board, there is > another board that contains three mezzanine boards for the Hex/LED bar > displays and switches. If you already have the original (V1) board you > don’t need the mezzanine boards as they will work with this V2 board as > well. If you don’t then you will need the two board combination. > > Also if you already have the original V1 board, all the chips on that > board can be transferred to this new board. > -- 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/groups/opt_out.
