MIKBUG (Smithbug) has the following case-sensitive commands.

; V VIEW MEMORY
; E CHANGE MEMORY
; M MOVE MEMORY
; I FILL MEMORY
; F FIND 

; D DISASSEMBLE CODE
; & S1 LOAD PROGRAMME
; G GO TO PROGRAM
; J JUMP TO TARGET PROGRAM

; T TRACE PROGRAM
; K CONTINUE AFTER BREAK
; 1 BREAKPOINT ONE
; 2 BREAKPOINT TWO

; H PRINTER ON
; R PRINT

; @ ASCII CONVERSION
; Q HARDWARE LOCATION
; O ECHO ON
; N ECHO OFF

View Memory

>V FROM ADDR 0000
0000 20 61 01 C3  4A 49 1E 2D  32 D0 3F 7A  D4 E3 E1 0F      ...JI.-2.?.....
0010 C0 2E D2 08  83 69 11 80  0B AC 43 A2  C2 28 B1 BD     ..........C..(..
0020 F1 96 68 69  65 20 D4 C2  92 DE 5C 8F  61 22 08 74     ..... ....\.."..
0030 21 11 67 7A  AF 47 18 51  EE A3 10 80  46 61 45 89     !....G.Q....F.E.
0040 C2 89 D6 A8  E8 21 8E 0A  92 E2 07 48  67 E4 4D CA     .....!.....H..M.
0050 5E 00 88 17  B1 C2 D2 2A  E3 46 F3 40  10 7D 00 EF     ^......*.F.@....
0060 A2 04 58 91  8C E3 90 28  01 9C E1 36  F8 80 48 C2     ..X....(...6..H.
0070 BB 04 B8 59  9B C5 82 8D  46 F0 28 DB  06 4D 69 84     ...Y....F.(..M..

 Change Memory

>E 0000
>0000 20
>0001 61
>0002 01
>0003 C3
>0004 4A
>0005 49
>0006 1E
>0007 2D
>0008 32
>0009 D0
>000A 3F
>000B 7A

Disassemble Code from Memory

>D
FROM ADDR D000
D000 8E LDS   #$7F44     ..D
D003 BF STS   $7F0A      ...
D006 7F CLR   $7F0D      ...
D009 CE LDX   #$C125     ..%
D00C FF STX   $7F17      ...
D00F FF STX   $7F08      ...
D012 86 LDA A #$03        ..
D014 B7 STA A $8018      ...
D017 01 NOP                .
D018 01 NOP                .
D019 01 NOP                .
D01A 86 LDA A #$15        ..
D01C B7 STA A $7F0C      ...
D01F B6 LDA A $7F0C      ...
D022 B7 STA A $8018      ...
D025 8E LDS   #$7F44     ..D
D028 8E LDS   #$7F62     ...
D02B 7F CLR   $7F13      ...
D02E 7F CLR   $7F16      ...
D031 7F CLR   $7F6D      ...
D034 CE LDX   #$C76B     ...
D037 8D BSR   $61   D09A  ..
D039 8D BSR   $59   D094  .Y
D03B 16 TAB                .
D03C BD JSR   $C0EF      ...