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; User installable disassembler and single-step run for paulmon2
; Please email comments, suggestions, bugs to paul@pjrc.com
; This code is in the public domain. It is distributed in
; the hope that it will be useful, but without any warranty;
; without even the implied warranty of merchantability or fitness
; for a particular purpose.
; For more information, please see
; http://www.pjrc.com/tech/8051/pm2_docs/index.html
.equ locat, 0x1000 ;location for these commands (usually 1000)
.equ paulmon2, 0x0000 ;location where paulmon2 is at (usually 0000)
.equ phex1, 0x2E+paulmon2
.equ cout, 0x30+paulmon2 ;send acc to uart
.equ phex, 0x34+paulmon2 ;print acc in hex
.equ phex16, 0x36+paulmon2 ;print dptr in hex
.equ pstr, 0x38+paulmon2 ;print string @dptr
.equ ghex, 0x3A+paulmon2 ;get two-digit hex (acc)
.equ ghex16, 0x3C+paulmon2 ;get four-digit hex (dptr)
.equ upper, 0x40+paulmon2 ;convert acc to uppercase
.equ newline, 0x48+paulmon2
.equ pcstr, 0x45+paulmon2
.equ pint, 0x50+paulmon2
.equ smart_wr, 0x56+paulmon2
.equ cin_filter, 0x62+paulmon2
.equ asc2hex, 0x65+paulmon2
.equ list_key, 'L' ;list (disassemble)
.equ step_key, 'S' ;single step run
.equ vtedit_key, 'E' ;memory editor
;for testing in ram
;.equ list_key, 'K' ;list (disassemble)
;.equ step_key, 'W' ;single step run
;.equ vtedit_key, 'E' ;memory editor
;location of two bytes used by single-step in internal ram which we
;hope the user's program won't write over while it's running. These
;two bytes hold the address of the previous instruction, so we can
;show the last executed instruction with the current value of the
;registers, which is much more intuitive than displaying the next
;instruction by grabbing the program counter from the stack as was
;done in PAULMON1's single step.
.equ lastpc, 0x7C ;don't forget to update the docs below
;DIS
;---------------------------------------------------------;
; ;
; list command ;
; ;
;---------------------------------------------------------;
.org locat
.db 0xA5,0xE5,0xE0,0xA5 ;signiture
.db 254,list_key,0,0 ;id (254=user installed command)
.db 0,0,0,0 ;prompt code vector
.dB 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;user defined
.db 255,255,255,255 ;length and checksum (255=unused)
.db "List",0
newline_h:ljmp newline
.org locat+64 ;executable code begins here
; disassembler register usage
; r0 = temporary storage
; r1 = temporart storage
; r2 = first instruction byte
; r3 = second instruction byte
; r4 = third instruction byte
; r5 = line count
; r6 = program counter (lsb)
; r7 = program counter (msb)
list: acall newline_h
mov r5, #20
clr psw.1 ;use ordinary long format
list2: acall disasm
djnz r5, list2
ajmp newline_h
disasm:
;print out the memory location and fetch the next three bytes
mov a, r7
mov dph, a
acall phex_h
mov a, r6
mov dpl, a
acall phex_h
clr a
movc a, @a+dptr
mov r2, a
inc dptr
clr a
movc a, @a+dptr
mov r3, a
inc dptr
clr a
movc a, @a+dptr
mov r4, a
mov a, r2
anl a, #00001000b
jnz lookup2
;fetch constants for instructions not using R0-R7
lookup1:
mov a, r2
rr a
anl a, #01111000b ;grab upper 4 bits
mov r0, a ;keep in r0 for a moment
mov a, r2
anl a, #00000111b ;get lower 3 bits
orl a, r0 ;combine in upper 4
mov dptr, #opot1 ;opot=operand offset table
movc a, @a+dptr
sjmp unpack
;fetch constants for R0-R7 instructions
lookup2:
mov a, r2
swap a
anl a, #00001111b
mov dptr, #opot2
movc a, @a+dptr
;now we'll unpack the operand code (# bytes and addr mode)
unpack: anl a, #00000011b
mov r0, a
;increment the r7/r6 pointer
add a, r6
mov r6, a
mov a, r7
addc a, #0
mov r7, a
;now print the bytes and spaces (r0 has # of bytes to print)
pbytes: mov a, #':'
acall cout_h
acall space_h
jb psw.1, pmnu ;skip bytes if running single-step
mov a, r2
acall phex_h
acall space_h
cjne r0, #1, pbytes2
mov r1, #11
sjmp pbytes4
pbytes2:mov a, r3
acall phex_h
acall space_h
cjne r0, #2, pbytes3
mov r1, #8
sjmp pbytes4
pbytes3:mov a, r4
acall phex_h
mov r1, #6
pbytes4:acall space_h
djnz r1, pbytes4
;prints the mnunonic name and spaces
pmnu: mov a, r2
anl a, #00001000b
jnz pmnu_lookup2
pmnu_lookup1:
mov dptr, #mnot1 ;mnot=mnunonic offset table
mov a, r2
rr a
anl a, #01111000b ;grab upper 4 bits
mov r0, a ;keep in r0 for a moment
mov a, r2
anl a, #00000111b ;get lower 3 bits
orl a, r0 ;combine in upper 4
movc a, @a+dptr
mov r1, a
sjmp pmnu0
pmnu_lookup2:
mov dptr, #mnot2 ;16 byte table for r0-r7 instructions
mov a, r2
swap a
anl a, #00001111b
movc a, @a+dptr
mov r1, a
pmnu0: mov dptr, #mnu_tbl
mov r0, #8
clr c
pmnu1: mov a, #' '
jc pmnu2
mov a, r1
movc a, @a+dptr
inc r1
mov c, acc.7
anl a, #0x7F
pmnu2: acall cout_h
djnz r0, pmnu1
;print the operands
mov a, #dasm2 & 255 ;(low)
push acc
mov a, #dasm2 >> 8 ;(high)
push acc
am_lookup0:
mov a, r2
anl a, #00001000b
jnz am_lookup2
;fetch constants for instructions not using R0-R7
am_lookup1:
mov a, r2
rr a
anl a, #01111000b ;grab upper 4 bits
mov r0, a ;keep in r0 for a moment
mov a, r2
anl a, #00000111b ;get lower 3 bits
orl a, r0 ;combine in upper 4
mov dptr, #opot1 ;opot=operand offset table
movc a, @a+dptr
sjmp am_unpack
;fetch constants for R0-R7 instructions
am_lookup2:
mov a, r2
swap a
anl a, #00001111b
mov dptr, #opot2
movc a, @a+dptr
am_unpack:
anl a, #11111100b
rr a
rr a
dec a
mov dptr, #oprt ;oprt=operand routine table
rl a
add a, dpl
mov dpl, a
clr a
addc a, dph
mov dph, a
clr a
jmp @a+dptr
dasm2:
ajmp newline_h
oprt: ajmp opcd1 ;addr11
ajmp opcd2 ;A,Rn
ajmp opcd3 ;A,direct
ajmp opcd4 ;A,@Ri
ajmp opcd5 ;A,#data
ajmp opcd6 ;direct,A
ajmp opcd7 ;direct,#data
ajmp opcd8 ;C,bit
ajmp opcd9 ;C,/bit
ajmp opcd10 ;A,direct,rel
ajmp opcd11 ;A,#data,rel
ajmp opcd12 ;Rn,#data,rel
ajmp opcd13 ;@Ri,#data,rel
ajmp pa ;A
ajmp prc ;C
ajmp pbit ;bit
ajmp pdirect ;direct
ajmp p_reg_i ;@Ri
ajmp opcd19 ;AB
ajmp opcd20 ;Rn,rel
ajmp opcd21 ;direct,rel
ajmp p_reg_n ;Rn
ajmp pdptr ;DPTR
ajmp opcd24 ;bit,rel
ajmp prel ;rel
ajmp opcd26 ;@A+DPTR
ajmp opcd27 ;addr16
ajmp opcd28 ;Rn,A
ajmp opcd29 ;Rn,direct
ajmp opcd30 ;Rn,#data
ajmp opcd31 ;direct,Rn
ajmp opcd32 ;direct,direct
ajmp opcd33 ;direct,@Ri
ajmp opcd34 ;@Ri,A
ajmp opcd35 ;@Ri,direct
ajmp opcd36 ;@Ri,#data
ajmp opcd37 ;bit,C
ajmp opcd38 ;DPTR,#data16
ajmp opcd39 ;A,@A+DPTR
ajmp opcd40 ;A,@A+PC
ajmp opcd41 ;A,@DPTR
ajmp opcd42 ;@DPTR,A
ret ; <nothing>
opcd4: ;A,@Ri done
acall pac
p_reg_i:mov a,#'@'
acall cout_h
mov a,#'R'
acall cout_h
mov a, r2
anl a,#00000001b
ajmp phex1_h
opcd3: ;A,direct done
acall pac
pdirect:
mov a, r3
jb acc.7,pdir1
pdir0: mov a, r3
ajmp phex_h
pdir1: mov dptr,#sfrmnu
pdir2: clr a
movc a,@a+dptr
inc dptr
jz pdir0
mov r0,a
clr c
subb a, r3
jnz pdir3
pstr_h:
ljmp pstr
pdir3: clr a
movc a,@a+dptr
inc dptr
jnb acc.7,pdir3
sjmp pdir2
opcd9: ;C,/bit done
acall prc
acall pcomma
mov a, #'/'
acall cout_h
pbit:
mov a, r3
anl a,#01111000b
rl a
swap a
mov r0,a
mov a, r3
anl a,#10000000b
jz pbit1
mov dptr,#bitptr ;it's a Special Function Reg.
mov a,r0
movc a,@a+dptr
mov dptr,#bitmnu
addc a,dpl
mov dpl,a
jnc pbit0
inc dph
pbit0: acall pstr_h
sjmp pbit2
pbit1: mov a,r0 ;it's between 20h and 2Fh
add a,#20h
acall phex_h
pbit2: mov a,#'.'
acall cout_h
mov a, r3
anl a,#00000111b
ajmp phex1_h
opcd10: ;A,direct,rel done
acall pac
acall pdirect
opcd10a:acall pcomma
mov a, r4
mov r3, a
prel:
mov a, r3
add a, r6
mov dpl, a
mov a, r3
jb acc.7, prel2
clr a
sjmp prel3
prel2: clr a
cpl a
prel3: addc a, r7
mov dph, a
ljmp phex16
pat: ;prints the '@' symbol
mov a,#'@'
ajmp cout_h
pac: ;print "A,"
acall pa
pcomma: ;prints a comma
mov a,#','
acall cout_h
pspace: mov a, #' '
ajmp cout_h
plb: ;prints the '#' symbol
mov a,#'#'
ajmp cout_h
opcd6: ;direct,A done
acall pdirect
acall pcomma
pa: ;prints 'A'
mov a,#'A'
ajmp cout_h
opcd37: ;bit,C done
acall pbit
acall pcomma
prc: ;prints 'C'
mov a,#'C'
ajmp cout_h
opcd26: ;@A+DPTR done
acall pat
acall pa
mov a,#'+'
acall cout_h
pdptr: ;prints DPTR
mov a, #'D'
acall cout_h
mov a, #'P'
acall cout_h
mov a, #'T'
acall cout_h
mov a, #'R'
cout_h:
ljmp cout
opcd1: mov a, r7 ;addr11 done
anl a, #11111000b
mov r0, a
mov a, r2
swap a
rr a
anl a, #00000111b
orl a, r0
acall phex_h
mov a, r3
ajmp phex_h
opcd2: ;A,Rn done
acall pac
p_reg_n:mov a,#'R'
acall cout_h
mov a, r2
anl a,#00000111b
phex1_h:
ljmp phex1
opcd5: ;A,#data done
acall pa
pdata: acall pcomma
acall plb
mov a, r3
phex_h:
ljmp phex
opcd7: ;direct,#data done
acall pdirect
mov a, r4
mov r3, a
ajmp pdata
opcd8: ;C,bit done
acall prc
acall pcomma
ajmp pbit
opcd11: ;A,#data,rel done
acall pa
opcd11a:acall pcomma
acall plb
mov a, r3
acall phex_h
ajmp opcd10a
opcd12: ;Rn,#data,rel done
acall p_reg_n
ajmp opcd11a
opcd13: ;@Ri,#data,rel done
acall p_reg_i
ajmp opcd11a
opcd19: ;AB done
acall pa
mov a, #'B'
ajmp cout_h
opcd20: ;Rn,rel done
acall p_reg_n
acall pcomma
ajmp prel
opcd21: ;direct,rel done
acall pdirect
ajmp opcd10a
opcd24: ;bit,rel done
acall pbit
ajmp opcd10a
opcd28: ;Rn,A done
acall p_reg_n
acall pcomma
ajmp pa
opcd29: ;Rn,direct done
acall p_reg_n
acall pcomma
ajmp pdirect
opcd30: ;Rn,#data done
acall p_reg_n
ajmp pdata
opcd31: ;direct,Rn done
acall pdirect
acall pcomma
ajmp p_reg_n
opcd32: ;direct,direct done
mov a, r3
push acc
mov a, r4
mov r3, a
acall pdirect
acall pcomma
pop acc
mov r3, a
ajmp pdirect
opcd33: ;direct,@Ri done
acall pdirect
acall pcomma
ajmp p_reg_i
opcd34: ;@Ri,A done
acall p_reg_i
acall pcomma
ajmp pa
opcd35: ;@Ri,direct done
acall p_reg_i
acall pcomma
ajmp pdirect
opcd36: ;@Ri,#data done
acall p_reg_i
ajmp pdata
opcd38: ;DPTR,#data16 done
acall pdptr
acall pcomma
acall plb
opcd27: mov a, r3 ;addr16 done
acall phex_h
mov a, r4
ajmp phex_h
opcd39: ;A,@A+DPTR done
acall pac
acall pat
acall pa
mov a,#'+'
acall cout_h
ajmp pdptr
opcd40: ;A,@A+PC done
acall pac
acall pat
acall pa
mov a,#'+'
acall cout_h
mov a,#'P'
acall cout_h
ajmp prc
opcd41: ;A,@DPTR done
acall pac
acall pat
ajmp pdptr
opcd42: ;@DPTR,A done
acall pat
acall pdptr
acall pcomma
ajmp pa
sfrmnu: .db 0xE0,"AC",'C'+128
.db 0x81,'S','P'+128
.db 0x82,"DP",'L'+128
.db 0x83,"DP",'H'+128
.db 0x80,'P','0'+128
.db 0x90,'P','1'+128
.db 0xA0,'P','2'+128
.db 0xB0,'P','3'+128
.db 0x99,"SBU",'F'+128
.db 0xCD,"TH",'2'+128
.db 0xC8,"T2CO",'N'+128
.db 0xCC,"TL",'2'+128
.db 0xCB,"RCAP2",'H'+128
.db 0xCA,"RCAP2",'L'+128
.db 0x8C,"TH",'0'+128
.db 0x8A,"TL",'0'+128
.db 0x8D,"TH",'1'+128
.db 0x8B,"TL",'1'+128
sfr1: .db 0xF0,'B'+128 ;5
sfr2: .db 0xD0,"PS",'W'+128 ;7
sfr3: .db 0xA8,'I','E'+128
sfr4: .db 0xB8,'I','P'+128
sfr5: .db 0x89,"TMO",'D'+128 ;8
sfr6: .db 0x88,"TCO",'N'+128 ;8
sfr7: .db 0x98,"SCO",'N'+128 ;8
sfr8: .db 0x87,"PCO",'N'+128 ;8
.db 0 ;just in case
opot2: .db 0x59, 0x59, 0x09, 0x09 ;inc, dec, add, addc
.db 0x09, 0x09, 0x09, 0x7A ;orl, anl, xrl, mov
.db 0x7E, 0x09, 0x76, 0x33 ;mov, subb, mov, cjne
.db 0x09, 0x52, 0x09, 0x71 ;xch, djnz, mov, mov
bitptr: .db 0x00, 0x02, 0x06, 0x08, 0x0C, 0x0E, 0x10, 0x12
.db 0x14, 0x16, 0x1B, 0x1E, 0x20, 0x23, 0x24, 0x25
;some stuff used by single step... it's here to fill up some of
;the unused space from the end of the disassembler code and the
;beginning of the single-step header (which must begin on a 256
;byte page boundry)
wr_check: ;write to memory and check that it worked.
;acc=0 if it worked, nonzero if it didn't write
mov r0, a ;keep a copy of the data in r0
movx @dptr, a
clr a
movc a, @a+dptr
clr c
subb a, r0
ret
;delay for approx 1 character transmit time
chardly:mov r1, #80
chdly2: mov a, th1
cpl a
inc a
mov r0, a
djnz r0, *
djnz r1, chdly2
ret
prcolon:acall phex_h
mov a, #':'
ajmp cout_h
phexsp: acall phex_h
space_h:
mov a, #' '
ajmp cout_h
;SINGLE
;---------------------------------------------------------;
; ;
; single step command ;
; ;
;---------------------------------------------------------;
.org locat+0x400
.db 0xA5,0xE5,0xE0,0xA5 ;signiture
.db 254,step_key,0,0 ;id (254=user installed command)
.db 0,0,0,0 ;prompt code vector
.dB 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;user defined
.db 255,255,255,255 ;length and checksum (255=unused)
.db "Single-Step",0
.org locat+0x440 ;executable code begins here
ssrun:
;first check to make sure they connect int1 low
jnb p3.3, ssrun2
mov dptr, #sserr1 ;give error msg if int1 not grounded
pcstr_h:
ljmp pcstr
ssrun2: ;make sure there's a ljmp at the int1 vector location
mov dptr, #0x0013
clr a
movc a, @a+dptr
add a, #254
jz ssrun3
mov dptr, #sserr2 ;give error that paulmon2 was not found.
ajmp pcstr_h
ssrun3: ;now write an ljmp to "step" in the ram and check it.
inc dptr
movc a, @a+dptr
mov r0, a
clr a
inc dptr
movc a, @a+dptr
mov dpl, a
mov dph, r0 ;now data pointer points to int1 target
mov a, #2
acall wr_check
jnz ssrun4
inc dptr
mov a, #(step >> 8)
acall wr_check
jnz ssrun4
inc dptr
mov a, #(step & 255)
acall wr_check
jz ssrun5
ssrun4: mov r0, dpl
mov r1, dph
mov dptr, #sserr3 ;error: couldn't write to memory @xxxx
acall pcstr_h
mov a, r1
acall phex_h
mov a, r0
acall phex_h
ajmp newline_h
ssrun5: mov a, ip ;set to high priority interrupt
anl a, #00000100b
mov ip, a
;let's not beat around the bush (like paulmon1), all
;we need to know is where to jump into memory.
mov dptr, #prompt8
acall pcstr_h
mov a, r7
acall phex_h
mov a, r6
acall phex_h
mov dptr,#prompt4
acall pcstr_h
lcall ghex16 ;ask for the jump location
jb psw.5, ssrun7
jnc ssrun6
mov dptr,#abort
acall pstr_h
ajmp newline_h
ssrun6: mov r6, dpl ;where we'll begin executing
mov r7, dph
ssrun7: clr tcon.2 ;need low-level triggered int1
mov dptr,#ssmsg ;tell 'em we're starting
acall pcstr_h
mov dptr,#ssnames
acall pstr_h
clr a
mov sp, #8 ;just like after a reset
push acc ;unlike a 8051 start-up, push return addr
push acc ;of 0000, just in case they end w/ ret
mov dpl, r6 ;load the program's address into dptr
mov dph, r7
mov psw, a ;and clear everything to zero
mov r0, a
mov r1, a
mov r2, a
mov r3, a
mov r4, a
mov r5, a
mov r6, a
mov r7, a
mov b, a
mov lastpc, #ssstart & 255
mov (lastpc+1), #ssstart >> 8
setb ie.2
setb ea ;turn on the interrupt
ssstart:jmp @a+dptr
done: acall chardly
pop acc
mov r1, a
pop acc
mov r0, a
pop dpl
pop dph
pop psw
pop acc
reti
step: ;this is the single step interrupt service code...
push acc
push psw ;Stack Contents: (in this order)
push dph ;PC_L PC_H ACC PSW DPH DPL R0 R1
push dpl
mov a, r0
push acc
mov a, r1
push acc
;in case the previous instruction was "clr ti", we
;must wait for a character transmit time "in case it
;was a move to SBUF) and then set ti so that our cout
;doesn't hang when we transmit the first character!
acall chardly
setb ti
;now print out a line that looks like this:
;ACC B C DPTR R0 R1 R2 R3 R4 R5 R6 R7 SP PC Instruction
;00 00 0 3F00 00:00:00:00:00:00:00:00 00 - 0000: LJMP 0825
acall space_h
acall space_h
mov a, sp
add a, #251
mov r0, a ;r0 points to user's acc on stack
mov a, @r0
acall phexsp ;print acc
mov a, b
acall phexsp ;print b register
inc r0
mov a, @r0
rl a
anl a, #1
acall phex1_h ;print carry bit
acall space_h
inc r0
mov a, @r0
acall phex_h ;print dptr (msb)
inc r0
mov a, @r0
acall phexsp ;print dptr (lsb)
acall space_h
inc r0
mov a, @r0
acall prcolon ;print r0
inc r0
mov a, @r0
acall prcolon ;print r1
mov a, r2
acall prcolon ;print r2
mov a, r3
acall prcolon ;print r3
mov a, r4
acall prcolon ;print r4
mov a, r5
acall prcolon ;print r5
mov a, r6
acall prcolon ;print r6
mov a, r7
acall phexsp ;print r7
acall space_h
mov a, r0
add a, #248
acall phexsp ;print stack pointer
acall space_h
acall space_h
;now the trick is to disassemble the instruction... this isn't
;easy, since the user wants to see the last instruction that
;just executed, but program counter on the stack points to the
;next instruction to be executed. The dirty trick is to grab
;the program counter from last time where we stashed it in some
;memory that hopefully the user's program hasn't overwritten.
mov a, lastpc
mov lastpc, r6
mov r6, a
mov a, (lastpc+1)
mov (lastpc+1), r7
mov r7, a
mov a, r2
push acc
mov a, r3
push acc
mov a, r4
push acc
setb psw.1 ;tell it to use a compact format
;the disassembler uses quite a bit of stack space... if the
;user didn't leave enough room for the stack to grow with
;all this overhead, it will likely crash somewhere in the
;disassembler... oh well, not much I can do about it. The
;worst case stack usage for disasm is 9 bytes. We just
;pushed 5 and 6 at the beginning of step. With the two
;bytes for the interrupt, a total of 22 bytes of free stack
;space must be available to use the single-step feature.
acall disasm
pop acc
mov r4, a
pop acc
mov r3, a
pop acc
mov r2, a
mov r7, (lastpc+1)
mov r6, lastpc
;now grab the user's PC value to keep it for next time
mov a, sp
add a, #249
mov r0, a ;r0 points to user's acc on stack
mov a, @r0
mov lastpc, a
inc r0
mov a, @r0
mov (lastpc+1), a
;SINGLE STEP
step1: lcall cin_filter
lcall upper
step2: cjne a, #13, step7
ajmp done
step7: cjne a, #' ', step8 ;check space
ajmp done
step8: cjne a,#'?',step10 ;check '?'
mov dptr,#help5txt
acall pcstr_h
ajmp step1
step10: cjne a,#'Q',step11 ;check 'Q'=quit and run normal
mov dptr, #squit
acall pstr_h
clr ie.2
acall chardly
mov 8, #0 ;force return to 0000
mov 9, #0
mov sp, #9
reti
step11:
cjne a,#'H',step12 ;check 'H'=hex dump internal ram
ajmp ssdmp
step12: cjne a,#'R',step13 ;check 'R'=print out registers
ajmp ssreg
step13: cjne a,#'S',step14 ;check 'S'=skip next inst
ajmp ssskip
step14: cjne a,#'A',step15 ;check 'A'=change acc value
ajmp sschacc
step15: cjne a,#'.',step20
mov dptr, #ssnames
acall pstr_h
ajmp step1
step20: ajmp step1
pequal: ; prints '='
mov a,#'='
ajmp cout_h
ssdmp:
mov dptr, #ssdmps1
acall pstr_h
clr a
acall prcolon
acall space_h
mov r0, sp
dec r0
mov a, @r0
acall phexsp
inc r0
mov a, @r0
acall phex_h
mov r0, #2
mov r1, #14
ajmp ssdmp2
ssdmp1: mov a, r0
acall prcolon
mov r1, #16
ssdmp2: acall space_h
mov a, @r0
acall phex_h
inc r0
djnz r1, ssdmp2
acall newline_h
cjne r0, #0x80, ssdmp1
acall newline_h
ajmp step1
ssreg:
mov dptr, #sfr2+1
acall pstr_h
acall pequal
mov a, sp
add a, #252
mov r0, a
mov a, @r0
acall phexsp ;print psw
mov dptr,#sfr3+1
mov r0, 0xA8
acall psfr ;print ie
mov dptr,#sfr4+1
mov r0, 0xB8
acall psfr ;print ip
mov dptr,#sfr5+1
mov r0, 0x89
acall psfr ;print tmod
mov dptr,#sfr6+1
mov r0, 0x88
acall psfr ;print tcon
mov dptr,#sfr7+1
mov r0, 0x98
acall psfr ;print smod
mov dptr,#sfr8+1
mov r0, 0x87
acall psfr ;print pcon
mov a, #'T'
acall cout_h
mov a, #'0'
acall cout_h
acall pequal
mov a, 8Ch
acall phex_h ;print Timer 0
mov a, 8Ah
acall phex_h
acall space_h
mov a, #'T'
acall cout_h
mov a, #'1'
acall cout_h
acall pequal
mov a, 8Dh ;print Timer 1
acall phex_h
mov a, 8Bh
acall phex_h
acall newline_h
ajmp step1
psfr: acall pstr_h
acall pequal
mov a, r0
ajmp phexsp
;skip the next instruction
ssskip:
mov r0, #23
ssskip2:acall space_h
djnz r0, ssskip2
mov dptr,#sskip1
acall pstr_h
mov a, sp
add a, #249
mov r0, a ;set r0 to point to pc on stack
mov a, @r0
mov lastpc, r6 ;keep r6/r7 safe in lastpc
mov r6, a ;put user's pc into r6/r7
inc r0
mov a, @r0
mov (lastpc+1), r7
mov r7, a
mov a, r2
push acc
mov a, r3
push acc
mov a, r4
push acc
setb psw.1 ;tell it to use a compact format
acall disasm ;run disasm to show 'em what was skipped
pop acc
mov r4, a
pop acc
mov r3, a
pop acc
mov r2, a
mov a, sp
add a, #249
mov r0, a ;set r0 to point to pc on stack
mov a, r6
mov r6, lastpc ;restore r6/r7
mov lastpc, a ;update lastpc with next inst addr
mov @r0, a ;also update user's pc!!
inc r0
mov a, r7
mov r7, (lastpc+1)
mov (lastpc+1), a
mov @r0, a
ajmp step1
sschacc:
mov a, sp
add a, #251
mov r0, a ;r0 points to acc on stack
mov dptr, #chaccs1
acall pstr_h
lcall ghex
jc chacc2
jb psw.5, chacc2
mov @r0, a
acall newline_h
ajmp step1
chacc2: mov dptr, #abort
acall pstr_h
ajmp step1
;stuff some of the disassembler tables, strings, etc since we have a
;bit of space before the beginning of the editor command code
;opcode offset table (gives #bytes for the instruction
;and the number of the routine to print the operands)
opot1: .db 0xAD, 0x06, 0x6F, 0x39, 0x39, 0x46, 0x49, 0x49 ;0
.db 0x63, 0x06, 0x6F, 0x39, 0x39, 0x46, 0x49, 0x49 ;1
.db 0x63, 0x06, 0xAD, 0x39, 0x16, 0x0E, 0x11, 0x11 ;2
.db 0x63, 0x06, 0xAD, 0x39, 0x16, 0x0E, 0x11, 0x11 ;3
.db 0x66, 0x06, 0x1A, 0x1F, 0x16, 0x0E, 0x11, 0x11 ;4
.db 0x66, 0x06, 0x1A, 0x1F, 0x16, 0x0E, 0x11, 0x11 ;5
.db 0x66, 0x06, 0x1A, 0x1F, 0x16, 0x0E, 0x11, 0x11 ;6
.db 0x66, 0x06, 0x22, 0x69, 0x16, 0x1F, 0x92, 0x92 ;7
.db 0x66, 0x06, 0x22, 0xA1, 0x4D, 0x83, 0x86, 0x86 ;8
.db 0x9B, 0x06, 0x96, 0x9D, 0x16, 0x0E, 0x11, 0x11 ;9
.db 0x26, 0x06, 0x22, 0x5D, 0x4D, 0xAD, 0x8E, 0x8E ;A
.db 0x26, 0x06, 0x42, 0x3D, 0x2F, 0x2B, 0x37, 0x37 ;B
.db 0x46, 0x06, 0x42, 0x3D, 0x39, 0x0E, 0x11, 0x11 ;C
.db 0x46, 0x06, 0x42, 0x3D, 0x39, 0x57, 0x11, 0x11 ;D
.db 0xA5, 0x06, 0x11, 0x11, 0x39, 0x0E, 0x11, 0x11 ;E
.db 0xA9, 0x06, 0x89, 0x89, 0x39, 0x1A, 0x89, 0x89 ;F
mnot1: ;mnunonic offset table (gives offset into above table)
.db 0x5A, 0x0E, 0x48, 0x73 ;nop, ajmp, ljmp, rr
.db 0x2B, 0x2B, 0x2B, 0x2B ;inc, inc, inc, inc
.db 0x30, 0x00, 0x43, 0x75 ;jbc, acall, lcall rrc
.db 0x21, 0x21, 0x21, 0x21 ;
.db 0x2E, 0x0E, 0x67, 0x6E ; etc...
.db 0x06, 0x06, 0x06, 0x06 ;
.db 0x38, 0x00, 0x6A, 0x70 ;
.db 0x0A, 0x0A, 0x0A, 0x0A ;
.db 0x33, 0x0E, 0x5D, 0x5D ;
.db 0x5D, 0x5D, 0x5D, 0x5D ;
.db 0x3B, 0x00, 0x12, 0x12 ;
.db 0x12, 0x12, 0x12, 0x12 ;
.db 0x41, 0x0E, 0x8F, 0x8F ;
.db 0x8F, 0x8F, 0x8F, 0x8F ;
.db 0x3E, 0x00, 0x5D, 0x35 ;
.db 0x4C, 0x4C, 0x4C, 0x4C ;
.db 0x7C, 0x0E, 0x12, 0x4F ;
.db 0x24, 0x4C, 0x4C, 0x4C ;
.db 0x4C, 0x00, 0x4C, 0x4F ;
.db 0x80, 0x80, 0x80, 0x80 ;
.db 0x5D, 0x0E, 0x4C, 0x2B ;
.db 0x57, 0x92, 0x4C, 0x4C ;
.db 0x12, 0x00, 0x1C, 0x1C ;
.db 0x15, 0x15, 0x15, 0x15 ;
.db 0x63, 0x0E, 0x19, 0x19 ;
.db 0x84, 0x88, 0x88, 0x88 ;
.db 0x60, 0x00, 0x78, 0x78 ;
.db 0x1F, 0x27, 0x8B, 0x8B ;
.db 0x53, 0x0E, 0x53, 0x53 ;
.db 0x19, 0x4C, 0x4C, 0x4C ;
.db 0x53, 0x00, 0x53, 0x53 ;
.db 0x1C, 0x4C, 0x4C, 0x4C ;
mnot2: .db 0x2B, 0x21, 0x06, 0x0A ;inc, dec, add, addc
.db 0x5D, 0x12, 0x8F, 0x4C ;orl, anl, xlr, mov
.db 0x4C, 0x80, 0x4C, 0x15 ;mov, subb, mov, cjne
.db 0x88, 0x27, 0x4C, 0x4C ;xch, djnz, mov, mov
;---------------------------------------------------------;
; ;
; External Memory Editor ;
; ;
;---------------------------------------------------------;
;register usage:
; R4, Flags:
; bit0: 0=display CODE memory, 1=display DATA memory
; bit1: 0=editing disabled, 1=editing enabled
; bit2: 0=editing in hex, 1=editing in ascii
; bit3: 0=normal, 1=in middle of hex entry (value in r5)
; R6/R7, current memory location
;
.org locat+0x800
.db 0xA5,0xE5,0xE0,0xA5 ;signiture
.db 254,vtedit_key,0,0 ;id (254=user installed command)
.db 0,0,0,0 ;prompt code vector
.dB 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;reserved
.db 0,0,0,0 ;user defined
.db 255,255,255,255 ;length and checksum (255=unused)
.db "Memory Editor (VT100)",0
.org locat+0x0840 ;executable code begins here
mov r4, #0
acall redraw
main:
mov a, r4
clr acc.3
mov r4, a
main2: lcall cin_filter
acall input_ck_2nd
cmd1: cjne a, #27, cmd2 ;quit
ajmp quit
cmd2: cjne a, #11, cmd3 ;up
ajmp cmd_up
cmd3: cjne a, #10, cmd4 ;down
ajmp cmd_down
cmd4: cjne a, #8, cmd5 ;left
ajmp cmd_left
cmd5: cjne a, #21, cmd6 ;right
ajmp cmd_right
cmd6: cjne a, #12, cmd7 ;redraw
acall redraw
ajmp main
cmd7: cjne a, #17, cmd8 ;quit
ajmp quit
cmd8: cjne a, #3, cmd9 ;code memory
mov a, r4
anl a, #11111110b
mov r4, a
acall cursor_home
mov dptr, #str_code
acall pstr_hh
acall redraw_data
ajmp main
cmd9: cjne a, #4, cmd10 ;data memory
mov a, r4
orl a, #00000001b
mov r4, a
acall cursor_home
mov dptr, #str_data
acall pstr_hh
acall redraw_data
ajmp main
cmd10: cjne a, #7, cmd11 ;goto memory loc
ajmp cmd_goto
cmd11: cjne a, #5, cmd12 ;toggle editing
ajmp cmd_edit
cmd12: cjne a, #6, cmd13 ;fill memory
ajmp cmd_fill
cmd13: cjne a, #1, cmd14 ;edit in ascii
mov a, r4
jnb acc.1, main
setb acc.2
mov r4, a
acall erase_commands
acall print_commands
acall redraw_cursor
ajmp main
cmd14: cjne a, #24, cmd15 ;edit in hex
mov a, r4
jnb acc.1, main
clr acc.2
mov r4, a
acall erase_commands
acall print_commands
acall redraw_cursor
ajmp main
cmd15: cjne a, #25, cmd16 ;page up
ajmp cmd_pgup
cmd16: cjne a, #26, cmd17 ;page down
ajmp cmd_pgdown
cmd17:
cmd_data: ;the input character wasn't any particular command, so
;maybe it's some input data being typed for edit mode
mov b, a ;keep a copy of user data in b
mov a, r4
jb acc.1, cmd_data2
cmd_abort:
ajmp main ;ignore if not in edit mode
cmd_data2:
jnb acc.2, input_hex
input_ascii:
mov a, b
acall ascii_only
cjne a, b, cmd_abort ;check that input is an ascii char
mov dph, r7
mov dpl, r6
lcall smart_wr ;write the char to memory
ajmp cmd_right
input_hex:
mov a, b
lcall upper
lcall asc2hex
jc cmd_abort ;ignore if not hex
mov r0, a ;keep hex value of input in r0
mov dph, r7 ;load dptr with address
mov dpl, r6
mov a, r4
jb acc.3, input_hex_2nd
input_hex_1st:
mov a, r0
mov r5, a
mov a, r4
setb acc.3 ;remember that we're waiting for 2nd char
mov r4, a
acall redraw_cursor
ajmp main2
input_hex_2nd:
mov a, r5 ;get data from memory
swap a ;shift nibbles
anl a, #11110000b ;just in case
add a, r0 ;add in this input to lower part
lcall smart_wr ;write back to memory
mov a, r4
clr acc.3
mov r4, a
ajmp cmd_right
input_ck_2nd:
;the main input routine will always call here when a new
;byte is entered... so we can do something special if we
;were waiting for the second character and it is not a
;legal hex character
push acc
mov a, r4
jb acc.1, inck2d
;if editing is disabled, don't do anything
clr acc.3
inck2b: mov r4, a
inck2c: pop acc
ret
inck2d: jnb acc.3, inck2b
;if we get here, we were actually waiting for the 2nd char
pop acc
push acc
lcall upper
lcall asc2hex
jnc inck2c ;proceed normally if it is valid
;if we get here, we did not get a hex legal char
pop acc
push acc
cjne a, #esc_char, inck2e
mov a, r4
clr acc.3
mov r4, a
acall redraw_cursor
pop acc
pop acc ;don't return and do the quit cmd
pop acc ;just quit this entry and wait for next cmd
ajmp main
inck2e: mov dph, r7 ;load dptr with address
mov dpl, r6
mov a, r5
lcall smart_wr ;write to memory
mov a, r4
clr acc.3
mov r4, a
acall redraw_cursor
sjmp inck2c
; R4, Flags:
; bit0: 0=display CODE memory, 1=display DATA memory
; bit1: 0=editing disabled, 1=editing enabled
; bit2: 0=editing in hex, 1=editing in ascii
; bit3: 0=normal, 1=in middle of hex entry (value in r5)
cmd_fill:
mov a, r4
anl a, #00000010b
jnz cmd_fill_ok
ajmp main ;don't allow if not in editing mode
cmd_fill_ok:
acall erase_commands
mov a, r4
push acc
mov dptr, #fill_prompt1
acall pcstr_hh
lcall ghex16
jc cmd_fill_abort
jb psw.5, cmd_fill_abort
mov r0, dpl
mov r1, dph
mov dptr, #fill_prompt2
acall pstr_hh
lcall ghex16
jc cmd_fill_abort
jb psw.5, cmd_fill_abort
mov r4, dpl
mov r5, dph
mov dptr, #fill_prompt3
acall pcstr_hh
lcall ghex
jc cmd_fill_abort
jb psw.5, cmd_fill_abort
mov r2, a
mov a, r4
mov r6, a
mov a, r5
mov r7, a
pop acc
mov r4, a
mov dpl, r0
mov dph, r1
;now r4 is restored to its normal value, dptr holds the
;first location to fill, and r6/r7 holds the last location to
;fill, and r2 has the fill value.
cmd_fill_loop:
mov a, r2
lcall smart_wr
mov a, r6
cjne a, dpl, cmd_fill_next
mov a, r7
cjne a, dph, cmd_fill_next
;when we get here, we're done!
acall erase_commands
acall print_commands
acall redraw_data
ajmp main
cmd_fill_next:
inc dptr
sjmp cmd_fill_loop
cmd_fill_abort:
pop acc
mov r4, a
acall erase_commands
acall print_commands
acall redraw_cursor
ajmp main
fill_prompt1:
.db "Fill",31,131,"; First: ",0
fill_prompt2:
.db " Last: ",0
fill_prompt3:
.db " ",168,": ",0
cmd_edit:
acall erase_commands
mov a, r4
xrl a, #00000010b
mov r4, a
acall print_commands
acall redraw_cursor
ajmp main
cmd_goto:
acall erase_commands
mov dptr, #goto_prompt
acall pcstr_hh
mov a, r4
push acc
lcall ghex16
pop acc
mov r4, a
jc cmdgt_abort
jb psw.5, cmdgt_abort
mov r6, dpl
mov r7, dph
acall cursor_home
mov a, #20
acall cursor_down
acall print_commands
acall redraw_data
ajmp main
cmdgt_abort:
acall cursor_home
mov a, #20
acall cursor_down
acall print_commands
acall redraw_cursor
ajmp main
goto_prompt:
.db 31,131,31,129,": ",0
cmd_up:
acall blank_it
mov a, r6
clr c
subb a, #16
mov r6, a
mov a, r7
subb a, #0
mov r7, a
mov a, r6
cpl a
anl a, #11110000b
jz cmd_up_scroll
mov a, #1
acall cursor_up
acall invert_it
ajmp main
cmd_up_scroll:
acall redraw_data
ajmp main
cmd_pgup:
dec r7
acall redraw_data
ajmp main
cmd_pgdown:
inc r7
acall redraw_data
ajmp main
cmd_down:
acall blank_it
mov a, r6
add a, #16
mov r6, a
mov a, r7
addc a, #0
mov r7, a
mov a, r6
anl a, #11110000b
jz cmd_down_scroll
mov a, #1
acall cursor_down
acall invert_it
ajmp main
cmd_down_scroll:
acall redraw_data
ajmp main
cmd_left:
acall blank_it
mov a, #3
acall cursor_left
mov a, r6
clr c
subb a, #1
mov r6, a
mov a, r7
subb a, #0
mov r7, a
mov a, r6
orl a, #11110000b
cpl a
jz cmdlf2
acall invert_it
ajmp main
cmdlf2:
mov a, r6
cpl a
anl a, #11110000b
jz cmd_left_scroll
mov a, #48
acall cursor_right
mov a, #1
acall cursor_up
acall invert_it
ajmp main
cmd_left_scroll:
acall redraw_data
ajmp main
cmd_right:
acall blank_it
mov a, #3
acall cursor_right
mov dpl, r6
mov dph, r7
inc dptr
mov r6, dpl
mov r7, dph
mov a, r6
anl a, #00001111b
jz cmdrt2
acall invert_it
ajmp main
cmdrt2:
mov a, r6
anl a, #11110000b
jz cmd_right_scroll
mov a, #48
acall cursor_left
mov a, #1
acall cursor_down
acall invert_it
ajmp main
cmd_right_scroll:
acall redraw_data
ajmp main
space: mov a, #' '
ajmp cout_hh
;register usage:
; R4, Flags:
; bit0: 0=display CODE memory, 1=display DATA memory
; bit1: 0=editing disabled, 1=editing enabled
; bit2: 0=editing in hex, 1=editing in ascii
; bit3: 0=normal, 1=in middle of hex entry (value in r5)
; R6/R7, current memory location
;
redraw:
mov dptr, #str_cl ;clear screen
acall pstr_hh
acall print_title_line
acall newline_hh
acall print_addr_line
acall newline_hh
acall print_dash_line
acall newline_hh
mov a, #16
acall cursor_down
acall print_dash_line
acall newline_hh
acall print_commands
redraw_data:
acall cursor_home
mov a, #2
acall cursor_down
;compute first byte address to display on the screen
mov dpl, #0
mov dph, r7
;now display the data
mov r0, #16
rd2: acall newline_hh
lcall phex16
mov a, #':'
acall cout_hh
mov r2, dpl
mov r3, dph
rd3: acall space
acall read_dptr
acall phex_hh
inc dptr
mov a, dpl
anl a, #00001111b
jnz rd3
mov dpl, r2
mov dph, r3
acall space
acall space
acall space
rd4: acall read_dptr
acall ascii_only
acall cout_hh
inc dptr
mov a, dpl
anl a, #00001111b
jnz rd4
djnz r0, rd2
redraw_cursor:
acall cursor_home
mov a, r6
swap a
anl a, #00001111b
add a, #3
acall cursor_down
;make the ascii character inverse
mov a, r6
anl a, #00001111b
add a, #56
acall cursor_right
acall inverse_on
acall read_r6r7
acall ascii_only
acall cout_hh
acall inverse_off
;now make the hex value inverse
mov a, r6
anl a, #00001111b
rl a
cpl a
add a, #52
acall cursor_left
acall inverse_on
acall read_r6r7
acall phex_hh
ajmp inverse_off
blank_it:
mov a, r6
anl a, #00001111b
rl a
cpl a
add a, #49
acall cursor_right
acall read_r6r7
acall ascii_only
acall cout_hh
mov a, r6
anl a, #00001111b
rl a
cpl a
add a, #52
acall cursor_left
acall read_r6r7
ajmp phex_hh
invert_it:
mov a, r6
anl a, #00001111b
rl a
cpl a
add a, #49
acall cursor_right
acall read_r6r7
acall ascii_only
acall inverse_on
acall cout_hh
acall inverse_off
mov a, r6
anl a, #00001111b
rl a
cpl a
add a, #52
acall cursor_left
acall read_r6r7
acall inverse_on
acall phex_hh
ajmp inverse_off
quit: mov a, r6
anl a, #11110000b
swap a
cpl a
add a, #19
acall cursor_down
ajmp newline_hh
ascii_only:
anl a, #01111111b ;avoid unprintable characters
cjne a, #127, aonly2
mov a, #' '
ret
aonly2: clr c
subb a, #32
jnc aonly3 ;avoid control characters
mov a, #(' ' - 32)
aonly3: add a, #32
ret
read_dptr:
mov a, r4
jb acc.0, rddptr2
clr a
movc a, @a+dptr
ret
rddptr2:movx a, @dptr
ret
read_r6r7:
push dph
push dpl
mov dph, r7
mov dpl, r6
mov a, r4
jb acc.3, rdr6r7d
jb acc.0, rdr6r7b
clr a
movc a, @a+dptr
sjmp rdr6r7c
rdr6r7b:movx a, @dptr
rdr6r7c:pop dpl
pop dph
ret
rdr6r7d:mov a, r5
sjmp rdr6r7c
.equ esc_char, 27
cursor_home:
acall term_esc
mov a, #'H'
ajmp cout_hh
cursor_down: ;acc is # of lines to move down
acall term_esc
acall pint_hh
mov a, #'B'
ajmp cout_hh
cursor_up: ;acc is # of lines to move up
acall term_esc
acall pint_hh
mov a, #'A'
ajmp cout_hh
cursor_left: ;acc is # of characters to move left
acall term_esc
acall pint_hh
mov a, #'D'
ajmp cout_hh
cursor_right: ;acc is # of characters to move right
acall term_esc
acall pint_hh
mov a, #'C'
ajmp cout_hh
inverse_on:
mov dptr, #str_so
ajmp pstr_hh
str_so: .db esc_char, "[0;7m", 0
inverse_off:
mov dptr, #str_se
ajmp pstr_hh
str_se: .db esc_char, "[0m", 0
term_esc:
push acc
mov a, #esc_char
acall cout_hh
mov a, #'['
acall cout_hh
pop acc
ret
print_addr_line:
mov dptr, #str_addr
acall pstr_hh
mov r0, #0
paddrl: acall space
mov a, #'+'
acall cout_hh
mov a, r0
lcall phex1
inc r0
cjne r0, #16, paddrl
mov dptr, #str_ascii_equiv
ajmp pstr_hh
print_dash_line:
mov r0, #72
pdashl: mov a, #'-'
acall cout_hh
djnz r0, pdashl
ret
print_title_line:
mov a, r4
jb acc.0, ptitle2
mov dptr, #str_code
sjmp ptitle3
ptitle2:mov dptr, #str_data
ptitle3:acall pstr_hh
mov r0, #8
ptitlel:acall space
djnz r0, ptitlel
mov dptr, #str_title
ajmp pcstr_hh
erase_commands:
acall cursor_home
mov a, #20
acall cursor_down
mov r2, #72
ercmd2: acall space
djnz r2, ercmd2
mov a, #72
ajmp cursor_left
; R4, Flags:
; bit0: 0=display CODE memory, 1=display DATA memory
; bit1: 0=editing disabled, 1=editing enabled
; bit2: 0=editing in hex, 1=editing in ascii
; bit3: 0=normal, 1=in middle of hex entry (value in r5)
print_commands:
mov a, r4
jnb acc.1, pcmd_no_edit
mov dptr, #str_cmd3
jb acc.2, pcmd_ascii
mov dptr, #str_cmd4
pcmd_ascii:
acall pstr_hh
mov dptr, #str_cmd5
acall pstr_hh
sjmp pcmd_finish
pcmd_no_edit:
mov dptr, #str_cmd2
acall pstr_hh
pcmd_finish:
mov dptr, #str_cmd1
ajmp pstr_hh
str_cmd1: .db " ^G=Goto ^C=Code ^D=Data ^L=Redraw ^Q=Quit", 0
str_cmd2: .db "^E-Edit",0
str_cmd3: .db "^A=", esc_char, "[0;7m", "ASCII", esc_char, "[0m", " ^X=Hex", 0
str_cmd4: .db "^A=ASCII ^X=", esc_char, "[0;7m", "Hex", esc_char, "[0m", 0
str_cmd5: .db " ^F=Fill",0
str_cl: .db esc_char, "[H", esc_char, "[2J", 0
str_addr: .db "ADDR:",0
str_ascii_equiv: .db " ASCII EQUIVILANT",0
str_title: .db "8051",31,154,31,131,31,216,"or,",31,248,31,254,", 1996",0
str_code: .db "CODE",0
str_data: .db "DATA",0
cout_hh:ljmp cout
phex_hh:ljmp phex
pstr_hh:ljmp pstr
newline_hh:ljmp newline
pcstr_hh:ljmp pcstr
pint_hh:ljmp pint
;---------------------------------------------------------;
; ;
; single step strings ;
; ;
;---------------------------------------------------------;
prompt4:.db "), or <ESC> to exit: ",0
prompt8:.db 13,31,136,128,131,129," (",0
abort: .db " Command Aborted.",13,10,0
sserr1: .db 13,161,197," connect INT1 (pin 13) low"
.db 128,186,207,204,13,0
sserr2: .db 148,"2",179,199,174,129," 0013",13,0
sserr3: .db 31,184,179,255,165," vector",174," ",0
ssmsg: .db 13,"Now",134,"ning",166,207,204," mode: "
.db "<RET>=",204,", ?= Help",13,13,0
sskip1: .db "Skipping Instruction-> ",0
ssdmps1:.db 13,10,"Loc: Int RAM Memory Contents",13,10,0
chaccs1:.db "New Acc Value: ",0
help5txt:.db 13
.db 31,207,31,204,31,158,":",13
.db "<RET> ",134,212,246,13
.db " <SP> ",134,212,246,13
.db " '?' ",255,142,215,13
.db " '.' ",255,196,253,"s",13
.db " 'R' ",255," special function",196,"s",13
.db " 'H' ",132,219,192,146,13
.db " 'S' ",252,212,246,13
.db " 'A' ",240,162," Acc value",13
.db " 'Q' ",200,207,204,13,14
squit: .db "Quit",13,10,0
ssnames:.db " ACC B C DPTR R0 R1 R2 R3 R4 R5 R6 R7 SP"
.db " Addr Instruction",13,10,0
;---------------------------------------------------------;
; ;
; disassembler data ;
; ;
;---------------------------------------------------------;
mnu_tbl:.db "ACAL",'L'+128
.db 0
.db "AD",'D'+128
.db 0
.db "ADD",'C'+128
.db "AJM",'P'+128
.db "AN",'L'+128
.db "CJN",'E'+128
.db "CL",'R'+128
.db "CP",'L'+128
.db "D",'A'+128
.db "DE",'C'+128
.db "DI",'V'+128
.db "DJN",'Z'+128
.db "IN",'C'+128
.db "J",'B'+128
.db "JB",'C'+128
.db "J",'C'+128
.db "JM",'P'+128
.db "JN",'B'+128
.db "JN",'C'+128
.db "JN",'Z'+128
.db "J",'Z'+128
.db "LCAL",'L'+128
.db "LJM",'P'+128
.db "MO",'V'+128
.db "MOV",'C'+128
.db "MOV",'X'+128
.db "MU",'L'+128
.db "NO",'P'+128
.db "OR",'L'+128
.db "PO",'P'+128
.db "PUS",'H'+128
.db "RE",'T'+128
.db "RET",'I'+128
.db "R",'L'+128
.db "RL",'C'+128
.db "R",'R'+128
.db "RR",'C'+128
.db "SET",'B'+128
.db "SJM",'P'+128
.db "SUB",'B'+128
.db "SWA",'P'+128
.db "XC",'H'+128
.db "XCH",'D'+128
.db "XR",'L'+128
.db "??",'?'+128
bitmnu: .db 'P','0'+128
.db "TCO",'N'+128
.db 'P','1'+128
.db "SCO",'N'+128
.db 'P','2'+128
.db 'I','E'+128
.db 'P','3'+128
.db 'I','P'+128
.db 'C','0'+128
.db "T2CO",'N'+128
.db "PS",'W'+128
.db 'D','8'+128
.db "AC",'C'+128
.db 'E'+'8'+128
.db 'B'+128
.db 'F'+'8'+128
|