Today I have added the MON85 monitor by Dave Dunfield. Not the original one, but the improved version by Roman Borik.

You can find all of the source codes and ready made images on GitHub.

MON85 improvements:

• Support for undocumented 8085 instructions DSUB B, ARHL, RDEL, LDHI d8, LDSI d8, LHLX D, SHLX D, JNK a16, JK a16, RSTV

• Command R displays all flags of F register (SZKA3PVC). If flag is not set dash '-' is displayed.

• Added restart vector RST 8 (0040h) for possibility to handle RSTV call.
• Changed TRACE mode. After entering TRACE mode, instruction on actual PC and content of registers (if it is switched on) are displayed. Entering a space ' ' executes this instruction, and returns to the 'T>' prompt with the next instruction.

• Instructions LXI, DAD, INX, DCX displays argument 'SP' rather than 'S'.
• Commands that requires 1 byte parameter raises error if entered value not fit to 1 byte.

• Command 'C' checks overlap of source and destination block and for copying uses appropriate direction.
• Command 'F' checks <start> and <end> parameters and raises error,  if <end> is lower than <start>.

• Added command 'H' to send out memory content in Intel HEX format.
• Sending of LF and CR characters were reversed and are sent in the usual order - CR first and followed by LF.