candrews
Experienced Member
To all the 8085 enthusiasts or 8085 curious out there, the build gerber files for a bus monitor on the SBC-85 system have been uploaded.
In addition to all the blinky LEDs for binary, this monitor also has a hexadecimal display of the address and data.
Single step and slow step capabilities allow the user to follow the software. A feature that is really nice is the bus monitor allows the user to select which of the six types of bus cycles should be used for the single step, e.g., stop only at memory reads, I/O writes, only opcodes, etc. This is fantastic for watching things go out a port, for example, since the program can run at full speed and then go into single or slow step mode only when it hits the OUT instruction.
Finally, this bus monitor has programmable address and data breakpoints as well as software control of the step override and bus cycle filtering. This allows the user to determine the address where the monitor should switch to step mode or it allows the user's software to control what type of bus cycle should be monitored and at what address the monitor should shift into step mode.
All in all, this bus monitor is an excellent tool for anyone working with the SBC-85 single board computer.
Download files and documentation are on the project website at SBC-85.COM. More info on Hackaday.io Download and build is best, but boards are available on tindie or watch on YouTube
regards
Craig
In addition to all the blinky LEDs for binary, this monitor also has a hexadecimal display of the address and data.
Single step and slow step capabilities allow the user to follow the software. A feature that is really nice is the bus monitor allows the user to select which of the six types of bus cycles should be used for the single step, e.g., stop only at memory reads, I/O writes, only opcodes, etc. This is fantastic for watching things go out a port, for example, since the program can run at full speed and then go into single or slow step mode only when it hits the OUT instruction.
Finally, this bus monitor has programmable address and data breakpoints as well as software control of the step override and bus cycle filtering. This allows the user to determine the address where the monitor should switch to step mode or it allows the user's software to control what type of bus cycle should be monitored and at what address the monitor should shift into step mode.
All in all, this bus monitor is an excellent tool for anyone working with the SBC-85 single board computer.
Download files and documentation are on the project website at SBC-85.COM. More info on Hackaday.io Download and build is best, but boards are available on tindie or watch on YouTube
regards
Craig
