M

Notes:
  No distinction is made between uppercase and lowercase.
  This command accepts no parameters.
  Anything characters following the "M" are ignored.

The purpose of this command is to show the memory usage at that moment. The term "slack" is just the difference between the start of the HEAP and the Stack Pointer at that instant, it doesn't mean that all of the slack area is available to be used. The Pixel abd iHex commands can affect the amount of memory available.

>M
HEAP starts: 0x02E0; present SP: 0x08F7; slack: 0x0617 bytes
>DS+ 0x8F7   ; Display SRAM from the address given - the STACK
SRAM contents:
08F0:                       31-31 37 30 02 31 0D 3A C6         1170.1.:.
>R+          ; Display both the Registers and the STACK

 10   32   54   76   98  1110 1312 1514 1716 1918 2120 2322 2524 2726 2928 3130  SP  RetAdd   SREG
---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------ --------
0000 00DD 0947 FF28-0004 0000 0000 4000-0029 007E 5202 002B-002B 0230 0280 3166 08F5  694E  Ithsvnzc
STACK contents:
08F0:                 31 34 AA-31 37 30 02 31 0D 3A C6       14.170.1.:.
>P = 16         ; Allocate 48 bytes for use as WS2812 pixel data
>P?+            ; Display that memory area
SRAM contents:
02E0:  30 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  0...............
02F0:  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
0300:  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
0310:  00 00                                            ..
>DEH+ 0x3E0 2   ; iHex write commands allocate memory on the STACK
EEPROM contents:
:02000002E0001C
:0203E000FFFF1D
:00000001FF
>M
HEAP starts: 0x02E0; present SP: 0x08F7; slack: 0x0617 bytes
>    ; Login using the '$' command as the first character on the line
m>:02000002E0001C
m>M  ; Note the difference below
HEAP starts: 0x02E0; present SP: 0x07E7; slack: 0x0507 bytes
m>:00000001FF
m>:00000001FF
m>M  ; Second End-Of-File command deallocates the iHex STACK allocation
HEAP starts: 0x02E0; present SP: 0x08F7; slack: 0x0617 bytes
m>