It works!!!! Thanks to all of you. It turns out that I had the jumpers messed up.
On Wednesday, June 10, 2015 at 10:41:45 PM UTC-4, [email protected] wrote: > Hi everyone. I just finished building the Z80 board and I am having some > problems, so I am hoping that some of you have some ideas. > > My system is the following: > V2-S100 Z80 Master CPU board > 4Meg static RAM board > Prop I/O board > > I have the Z80 board jumpered as master. I also have a simple switch for > reset. The RAM board is set for 1Meg only at 0000H. > > After power has been applied and reset issued the following conditions > exist: > > On the Z80 board the 'BUS Master' LED (D8) turns on along with the 'LOW > ROM' and 'ROM SEL' LED's > On the RAM board the 'BS' and 'R0' LED's light up. Also the 8bit read LED > and the 8bit write LED turn on. > Unfortunately nothing happens on the screen connected to the prop I/O > > I have attached a picture. > > I tried to follow the table for the Z80 board jumpers and basically > followed the examples. > > My main concern initially was the ROM monitor program. The only program > available for downloading is version 5.02 which uses two 4K pages. I am > using a uv erasable 27C64 instead of the eerom 28C64 that is shown on the > S100COMPUTERS website. > I compiled the program as described and generated the master.com file, > but when I loaded this file onto my eprom burner the code did not match the > listing! I set the transfer to the buffer at F000H. However, the HEX file > looked okay, so I used that. Not sure that is right- I haven't burner roms > for many years. > > So If anyone has any ideas or comments that would be great. I am up for > any suggestions. > -- 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.
