DOZMON is an obsolete DOS memory monitor loosely based on the famous Apple-1 and Apple ][ monitor programs. It uses very similar syntax and offers additional bidirectional file-memory transfer functionality. It also allows to read and write IO port addresses. The source is MASM compatible.
You need DOS 3.0+ environment and TASM assembler 2.0+ to compile the sources.
/h- display help/p- enable paging/c- clear screen/a <num>- reserve additional memory buffer witnumpages size (16b page)
Read single memory address at $FFFFF:
\FFFFF
FFFFF: 00 .
Read memory range at $FFFFE-$FFFFF:
\FFFFE.FFFFF
FFFFE: 00 00 ..
Write 2 bytes into memory starting at address $FFFFE:
\FFFFE: 11 22
Write memory range into file:
\>00000.0FFFF
enter file name: memory.bin
Write file contents into memory starting at address $00000:
\<00000
enter file name: memory.bin
file size: 65536
Write byte to IO port at address $70:
\!70: 04
Read bytes from IO port at address $71:
\!71
0071: 23 23
Show memory allocated by program by typin M:
\M
program start addr = 0x15360h
program end addr = 0x1635fh
file buffer start addr = 0x16370h
file buffer end addr = 0x1656fh
stack end addr = 0x16360h
stack start addr = 0x16560h
additional mem start addr = 0x17560h
additional mem end addr = 0x17570h
To quit program type Q or Ctrl-C