command parser not debugged

ld de,0;the command char pointer

exx ; switch bc , de and hl with their shadow ones
ld b,1 ; the command char pointer for the bit instruction. it counts as bits so 1=00000001 2=00000010 3=00000100
ld c,0 ; the blacklist
exx ; go back to the normal bc de and hl

ld iy,COMMAND_TABLE; iy beacaus we can use it as a pointer to something with an offset in hust 2 bytes!
ld hl,COMMAND_TABLE

call wait_for_a_key_and_then_put_it_in_the_c_register_without_modfying_any_other_register
xor 13 ; is it the ascii code for carrage return?
jr z,done ; our job is done, the shadow c holds the blacklist

ld b,(iy+1) ; get the pointer to the string of the commands from the COMMAND_TABLE to bc
ld c,(iy+0)

ld ix,0    ; move bc to ix
add ix,bc

add ix,de ; move the pointer of the string to the current char peing read

ld a,(ix+0) ; load the char from the current string and the current offset

xor b ; if b ( the char from the keyboard ) == a , the the zero flag will be set

jr z,SKIP_BLACKLIST

exx
ld a,c
or b ; now the bit corresponding the current command is set
rlc c ; shift c one bit left , bit 7 goes to bit 0 and carry
exx
inc iy ; we haven't finished checking the 8 commands
inc iy ; go to the next command in the  COMMAND_TABLE
jr c,checknextchar ; if carry is set then we have gone through all bits of c so all 8 commands
jr loop
checknextchar:
inc de ; check the new chars
ld iy,COMMAND_TABLE ; lets check the first command first
jr loop




COMMAND_TABLE: ; make an array with pointers to the strings
COMMAND0
COMMAND1
COMMAND2
COMMAND3
COMMAND4
COMMAND5
COMMAND6
COMMAND7


COMMAND0:.dm "reset",0xff ; the keyboard wont enter 0xff right?
COMMAND1:.dm "poke",0xff ; null terminated strings
COMMAND2:.dm "peek",0xff
COMMAND3:.dm "boot_fuzix",0xff
COMMAND4:.db 0xFF
COMMAND5:.db 0xFF
COMMAND6:.db 0xFF
COMMAND7:.db 0xFF


done: ; inspec the shadow c