Help;; eeprom won't read/write beyond address 255

**DDDvvv** · - 30th August 2010, 00:41

hi everyone.
im trying a memory intensive app on a 18f2620, where i need to read/write ascii characters onto eeprom. this pic has 1024 eeprom bytes, but for some reason, i cannot read/write beyond address 255.

program compiles ok but it shows black pixels on an lcd when i use this command:

data @300, "a","s","c","i","i"

i try to read at any of the above locations, and i get no values. works ok if i use any address under 255.

what im i missing?

thanks for reading

**DDDvvv** · - 30th August 2010, 01:11

im reading the datasheet, and im thinking that it has something to do with the EEADR register, that controls the address, being 8 bit (256 values).

so, is there life after address 255 in picbasic, or do i have to use external memory?

thanks

**ScaleRobotics** · - 30th August 2010, 14:15

I notice that in my PBP file, the 18f2620.bas file of mine has this line commented out. Have you tried uncommenting it out? This is the line that tells pbp how big the EEProm is, so without it, PBP can't know its larger than usual.

Code:

'EEPROM  $F00000, $F003FF

**Acetronics2** · - 30th August 2010, 14:59

Hi, DDDvvv

EDIT : 300dec <> 300 hex !!! ... ::lol::

300 dec = $12C ...

no bug on my side ... just need to have a new pair of glasses ( it's true ! ) and scroll slowlier through MPLAB Window ...
I had tested it for the 2525 too ... didn't see anything nor ...

Alain

**ScaleRobotics** · - 30th August 2010, 15:12

Ah, now I see why it is commented out....

WARNING Line 29: $F00000 Numeric overflow, value truncated. (18F2620.BAS)
WARNING Line 29: $F003FF Numeric overflow, value truncated. (18F2620.BAS)

Right you are Alain.

**DDDvvv** · - 30th August 2010, 16:19

thanks for replying guys.
i get the same error if i uncomment the eeprom line.

im sure there's some workaround in assembly, but for now, its off to i2c external memory and a pic with no eeprom. hopefully, i dont get the same error on using external memory.

**Bruce** · - 30th August 2010, 17:45

This works fine with PBP 2.60a and MPLAB ver 8.53.

Code:

DATA @300, "a","s","c","i","i"
 
Dat VAR BYTE
Index VAR WORD
 
Main:
    FOR Index = 300 TO 304
        READ Index,Dat
        HSEROUT [Dat,13,10]
    NEXT
Here:
    GOTO Here

Spits it out as expected in the serial output window, and MPLAB shows all data in the EEPROM view window.

Of course you need a word size variable for the index pointer when the address is > 255.

**KVLV** · - 30th December 2010, 11:43

hi I bring this thread up because i have trouble compiling eeprom passed the 256 bytes
chip used 18f2620 it has 1024x8 byte of eeprom

pbp pro version 2.60a
mplab ide 8.63
mpasm v5.39
microcode studio 4.0.0.0

so please point out what i did wrong.
Please help and thank you.

I have tried both the DATA and EEPROM, both cannot compile more than 256 byte of eeprom

my code is enclosed.

Code:

 '****************************************************************
'*  Name    : UNTITLED.BAS                                      *
'*  Author  : KVLV                                              *
'*  Notice  : Copyright (c) 2010 VANCOUVER                      *
'*          : All Rights Reserved                               *
'*  Date    : 12/27/2010                                        *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************
'chip use 18F2620
'
DEFINE LOADER_USED 1 'for bootstrap loader
define OSC 20
'define HSER_BAUD 19200  ' on pc side set to 19200 8N1 (8 data bits, no parity bit, 1 stop bit)
define HSER_BAUD 19200
' Set receive register to receiver enabled
DEFINE HSER_RCSTA 90h  
' Set transmit register to transmitter enabled
DEFINE HSER_TXSTA 20h  

INCLUDE "Modedefs.bas"

L var word
B var word
M var word
temp var word
'Mask var byte
X var word  '[5]
'Y VAR BIT[40]
C VAR word
S var byte[5]

data %00000000, %00000000, %00000000, %00000000, %00000000 'space
data %00000000, %00000000, %01111001, %00000000, %00000000 '!
data %00000000, %01110000, %00000000, %01110000, %00000000 'double_quotes
data %00010100, %01111111, %00010100, %01111111, %00010100 'hash
data %00010010, %00101010, %01111111, %00101010, %00100100 'dollar_sign
data %01100010, %01100100, %00001000, %00010011, %00100011 'percent
data %00110110, %01001001, %01010101, %00100010, %00000101 'ampersand
data %00000000, %01010000, %01100000, %00000000, %00000000 'apostrophe
data %00000000, %00011100, %00100010, %01000001, %00000000 'left_parenthesis
data %00000000, %01000001, %00100010, %00011100, %00000000 'right_parenthesis
data %00010100, %00001000, %00111110, %00001000, %00010100 'asterisk
data %00001000, %00001000, %00111110, %00001000, %00001000 'plus
data %00000000, %00000101, %00000110, %00000000, %00000000 'comma
data %00001000, %00001000, %00001000, %00001000, %00001000 'minus
data %00000000, %00000011, %00000011, %00000000, %00000000 'full_stop
data %00000010, %00000100, %00001000, %00010000, %00100000 'forward_slash
data %00111110, %01000101, %01001001, %01010001, %00111110 'zero
data %00000000, %00100001, %01111111, %00000001, %00000000 'one
data %00100001, %01000011, %01000101, %01001001, %00110001 'two
data %01000010, %01000001, %01010001, %01101001, %01000110 'three
data %00001100, %00010100, %00100100, %01111111, %00000100 'four
data %01110010, %01010001, %01010001, %01010001, %01001110 'five
data %00011110, %00101001, %01001001, %01001001, %00000110 'six
data %01000000, %01000111, %01001000, %01010000, %01100000 'seven
data %00110110, %01001001, %01001001, %01001001, %00110110 'eight
data %00110000, %01001001, %01001001, %01001010, %00111100 'nine
data %00000000, %00110110, %00110110, %00000000, %00000000 'colon
data %00000000, %00110101, %00110110, %00000000, %00000000 'semicolon
data %00001000, %00010100, %00100010, %01000001, %00000000 'less_than
data %00010100, %00010100, %00010100, %00010100, %00010100 'equals
data %00000000, %01000001, %00100010, %00010100, %00001000 'greater_than
data %00100000, %01000000, %01000101, %01001000, %00110000 'question_mark
data %00100110, %01001001, %01001111, %01000001, %00111110 'at
data %00111111, %01000100, %01000100, %01000100, %00111111 'A
data %01111111, %01001001, %01001001, %01001001, %00110110 'B
data %00111110, %01000001, %01000001, %01000001, %00100010 'C
data %01111111, %01000001, %01000001, %00100010, %00011100 'D
data %01111111, %01001001, %01001001, %01001001, %01000001 'E
data %01111111, %01001000, %01001000, %01001000, %01000000 'F
data %00111110, %01000001, %01001001, %01001001, %00101111 'G
data %01111111, %00001000, %00001000, %00001000, %01111111 'H
data %00000000, %01000001, %01111111, %01000001, %00000000 'I
data %00000010, %00000001, %01000001, %01111110, %01000000 'J
data %01111111, %00001000, %00010100, %00100010, %01000001 'K
data %01111111, %00000001, %00000001, %00000001, %00000001 'L
data %01111111, %00100000, %00011000, %00100000, %01111111 'M
data %01111111, %00010000, %00001000, %00000100, %01111111 'N
data %00111110, %01000001, %01000001, %01000001, %00111110 'O
data %01111111, %01001000, %01001000, %01001000, %00110000 'P
data %00111110, %01000001, %01000101, %01000010, %00111101 'Q
data %01111111, %01001000, %01001100, %01001010, %00110001 'R
data %00110001, %01001001, %01001001, %01001001, %01000110 'S
data %01000000, %01000000, %01111111, %01000000, %01000000 'T
data %01111110, %00000001, %00000001, %00000001, %01111110 'U
data %01111100, %00000010, %00000001, %00000010, %01111100 'V
data %01111110, %00000001, %00001110, %00000001, %01111110 'W
data %01100011, %00010100, %00001000, %00010100, %01100011 'X
data %01110000, %00001000, %00000111, %00001000, %01110000 'Y
data %01000011, %01000101, %01001001, %01010001, %01100001 'Z
data %00000000, %01111111, %01000001, %01000001, %00000000 'left_square
data %00100000, %00010000, %00001000, %00000100, %00000010 'back_slash
data %00000000, %01000001, %01000001, %01111111, %00000000 'right_square
data %00010000, %00100000, %01000000, %00100000, %00010000 'circumflex
data %00000001, %00000001, %00000001, %00000001, %00000001 'underscore
data %00000000, %01000000, %00100000, %00010000, %00000000 'grave_accent
data %00000010, %00010101, %00010101, %00010101, %00001111 'a
data %01111111, %00001001, %00001001, %00001001, %00000110 'b
data %00001110, %00010001, %00010001, %00010001, %00010001 'c
data %00000110, %00001001, %00001001, %00001001, %01111111 'd
data %00001110, %00010101, %00010101, %00010101, %00001101 'e
data %00000000, %00001000, %00111111, %01001000, %00100000 'f
data %00001001, %00010101, %00010101, %00010101, %00011110 'g
data %01111111, %00001000, %00001000, %00001000, %00000111 'h
data %00000000, %00000000, %00101111, %00000000, %00000000 'i
data %00000010, %00000001, %00000001, %01011110, %00000000 'j
data %00000000, %01111111, %00000100, %00001010, %00010001 'k
data %00000000, %01000001, %01111111, %00000001, %00000000 'l
data %00011111, %00010000, %00001110, %00010000, %00011111 'm
data %00011111, %00001000, %00010000, %00010000, %00001111 'n
data %00001110, %00010001, %00010001, %00010001, %00001110 'o
data %00011111, %00010100, %00010100, %00010100, %00001000 'p
data %00001000, %00010100, %00010100, %00010100, %00011111 'q
data %00011111, %00001000, %00010000, %00010000, %00001000 'r
data %00001001, %00010101, %00010101, %00010101, %00010010 's
data %00010000, %00010000, %01111110, %00010001, %00010010 't
data %00011110, %00000001, %00000001, %00000001, %00011110 'u
data %00011100, %00000010, %00000001, %00000010, %00011100 'v
data %00011110, %00000001, %00000110, %00000001, %00011110 'w
data %00010001, %00001010, %00000100, %00001010, %00010001 'x
data %00010000, %00001001, %00000110, %00001000, %00010000 'y
data %00010001, %00010011, %00010101, %00011001, %00010001 'z
data %00001000, %00110110, %01000001, %01000001, %00000000 'leftcurly
data %00000000, %00000000, %01111111, %00000000, %00000000 'vertline
data %00000000, %01000001, %01000001, %00110110, %00001000 'rightcurly
data %00000100, %00001000, %00001000, %00001000, %00010000 'tilde
data %01111111, %01000001, %01000001, %01000001, %01111111 'del 


TRISA=%00000000       '0=output
TRISB=%00000000       '1 = input
TRISC=%00000000
ADCON0=%11000000
ADCON1=%00000111
CMCON =%00000111                   ' Comparators = off

INTCON2.7=0 ' Enable Pull-Up's    PIC18F2620   'VERIFIED

Main:
    
'    temp=l
    
'    'display data sideway
'    for M=0 to 4
'        read l,x
        
'        hserout ["L:",dec3 l, " X:",bin8 x,13,10]
'        l=l+1
'        if l>175 then 
'            l=170
'        endif
       
'    next m   
'    s[0]= %01111111     'these lines work
'    s[1]= %01000001
'    s[2]= %01000001
'    s[3]= %01000001
'    s[4]= %01111111
    
'      for c=470 to 474
'           write c,s[c-470]
'           pause 1
'      next c
      
      
      
      for c=0 to 475 step 5
        hserout ["C:", dec c,13,10]
        gosub rotate
      next c
      
      hserout ["That's all folk!",13,10]
    
    END 





goto main


'-----------------
'setup variable
'set c as location of 
'call this
'ex:
' c=0
' gosub rotate
'
Rotate:   'rotate 90 counterclockwise
    l=c
    temp=l
    for m=0 to 4
        read l, x
        hserout [bin x.7]
        l=l+1
    next m
    hserout [13,10]
 
    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.6]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.5]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.4]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.3]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.2]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.1]
        l=l+1
    next m
    hserout [13,10]

    l=temp
    for m=0 to 4
        read l, x
        hserout [bin x.0]
        l=l+1
    next m
    hserout [13,10,13,10]  

return

**Dave** · - 30th December 2010, 13:37

KVLV, Are you sure you are compiling it with the right chip selected? I have been using 18F2620's for the last few years with almost all of the eeprom used. I have never had such a problem. Your code at first glance looks as though it should work.

Dave Purola,
N8NTA

**KVLV** · - 30th December 2010, 16:27

Dave,
yes, i did verify the chip use 18f2620.
also i use windows 7 32b

i have done/checked all the info from the top post to this end.

I just wanted someone on the other side compile and verify that it worked.

i have also have read the DATA/EEPROM that in this statement

"If the optional Location value is omitted, the first DATA
statement starts storing at address 0 and subsequent statements store at
the following locations."

or this "If the optional Location value is
omitted, the first EEPROM statement starts storing at address 0 and
subsequent statements store at the following locations."

Thanks,

**ScaleRobotics** · - 30th December 2010, 16:44

I just wanted someone on the other side compile and verify that it worked.

Compile works down here for the code you posted. Success 1678 bytes.

Windows XP
pbp pro version 2.60a
mplab ide 8.60
mpasm v5.38
microcode studio 3.0.0.5

**KVLV** · - 30th December 2010, 17:24

my compilation came up with 1686 bytes

fyi: i used tiny bootloader to load the hex file to the pic and also
use my trusted programmer to load the hex file.

the display cannot pass the 256 bytes of eeprom.

i am sure the READ/WRITE command work fine.
these code work fine

Code:

'    s[0]= %01111111     'these lines work
'    s[1]= %01000001
'    s[2]= %01000001
'    s[3]= %01000001
'    s[4]= %01111111
    
'      for c=470 to 474
'           write c,s[c-470]
'           pause 1
'      next c

i am question the DATA/EEPROM are not working.

this is from the tiny booloader

Code:

Connected to \\.\COM1 at 115200
  HEX: 2 min old, INHX32,18Fcode+cfg+eeprom , total=1686 bytes. 
  Searching for PIC ...
  Found:18F 2620/4620
  eeprom addr:000h <- 00h
  eeprom addr:001h <- 00h
  eeprom addr:002h <- 00h
  eeprom addr:003h <- 00h
  eeprom addr:004h <- 00h
  eeprom addr:005h <- 00h
  eeprom addr:006h <- 00h
  eeprom addr:007h <- 79h
  eeprom addr:008h <- 00h
  eeprom addr:009h <- 00h
  eeprom addr:00Ah <- 00h
  eeprom addr:00Bh <- 70h
  eeprom addr:00Ch <- 00h
  eeprom addr:00Dh <- 70h
  eeprom addr:00Eh <- 00h
  eeprom addr:00Fh <- 14h
  eeprom addr:010h <- 7Fh
  eeprom addr:011h <- 14h
  eeprom addr:012h <- 7Fh
  eeprom addr:013h <- 14h
  eeprom addr:014h <- 12h
  eeprom addr:015h <- 2Ah
  eeprom addr:016h <- 7Fh
  eeprom addr:017h <- 2Ah
  eeprom addr:018h <- 24h
  eeprom addr:019h <- 62h
  eeprom addr:01Ah <- 64h
  eeprom addr:01Bh <- 08h
  eeprom addr:01Ch <- 13h
  eeprom addr:01Dh <- 23h
  eeprom addr:01Eh <- 36h
  eeprom addr:01Fh <- 49h
  eeprom addr:020h <- 55h
  eeprom addr:021h <- 22h
  eeprom addr:022h <- 05h
  eeprom addr:023h <- 00h
  eeprom addr:024h <- 50h
  eeprom addr:025h <- 60h
  eeprom addr:026h <- 00h
  eeprom addr:027h <- 00h
  eeprom addr:028h <- 00h
  eeprom addr:029h <- 1Ch
  eeprom addr:02Ah <- 22h
  eeprom addr:02Bh <- 41h
  eeprom addr:02Ch <- 00h
  eeprom addr:02Dh <- 00h
  eeprom addr:02Eh <- 41h
  eeprom addr:02Fh <- 22h
  eeprom addr:030h <- 1Ch
  eeprom addr:031h <- 00h
  eeprom addr:032h <- 14h
  eeprom addr:033h <- 08h
  eeprom addr:034h <- 3Eh
  eeprom addr:035h <- 08h
  eeprom addr:036h <- 14h
  eeprom addr:037h <- 08h
  eeprom addr:038h <- 08h
  eeprom addr:039h <- 3Eh
  eeprom addr:03Ah <- 08h
  eeprom addr:03Bh <- 08h
  eeprom addr:03Ch <- 00h
  eeprom addr:03Dh <- 05h
  eeprom addr:03Eh <- 06h
  eeprom addr:03Fh <- 00h
  eeprom addr:040h <- 00h
  eeprom addr:041h <- 08h
  eeprom addr:042h <- 08h
  eeprom addr:043h <- 08h
  eeprom addr:044h <- 08h
  eeprom addr:045h <- 08h
  eeprom addr:046h <- 00h
  eeprom addr:047h <- 03h
  eeprom addr:048h <- 03h
  eeprom addr:049h <- 00h
  eeprom addr:04Ah <- 00h
  eeprom addr:04Bh <- 02h
  eeprom addr:04Ch <- 04h
  eeprom addr:04Dh <- 08h
  eeprom addr:04Eh <- 10h
  eeprom addr:04Fh <- 20h
  eeprom addr:050h <- 3Eh
  eeprom addr:051h <- 45h
  eeprom addr:052h <- 49h
  eeprom addr:053h <- 51h
  eeprom addr:054h <- 3Eh
  eeprom addr:055h <- 00h
  eeprom addr:056h <- 21h
  eeprom addr:057h <- 7Fh
  eeprom addr:058h <- 01h
  eeprom addr:059h <- 00h
  eeprom addr:05Ah <- 21h
  eeprom addr:05Bh <- 43h
  eeprom addr:05Ch <- 45h
  eeprom addr:05Dh <- 49h
  eeprom addr:05Eh <- 31h
  eeprom addr:05Fh <- 42h
  eeprom addr:060h <- 41h
  eeprom addr:061h <- 51h
  eeprom addr:062h <- 69h
  eeprom addr:063h <- 46h
  eeprom addr:064h <- 0Ch
  eeprom addr:065h <- 14h
  eeprom addr:066h <- 24h
  eeprom addr:067h <- 7Fh
  eeprom addr:068h <- 04h
  eeprom addr:069h <- 72h
  eeprom addr:06Ah <- 51h
  eeprom addr:06Bh <- 51h
  eeprom addr:06Ch <- 51h
  eeprom addr:06Dh <- 4Eh
  eeprom addr:06Eh <- 1Eh
  eeprom addr:06Fh <- 29h
  eeprom addr:070h <- 49h
  eeprom addr:071h <- 49h
  eeprom addr:072h <- 06h
  eeprom addr:073h <- 40h
  eeprom addr:074h <- 47h
  eeprom addr:075h <- 48h
  eeprom addr:076h <- 50h
  eeprom addr:077h <- 60h
  eeprom addr:078h <- 36h
  eeprom addr:079h <- 49h
  eeprom addr:07Ah <- 49h
  eeprom addr:07Bh <- 49h
  eeprom addr:07Ch <- 36h
  eeprom addr:07Dh <- 30h
  eeprom addr:07Eh <- 49h
  eeprom addr:07Fh <- 49h
  eeprom addr:080h <- 4Ah
  eeprom addr:081h <- 3Ch
  eeprom addr:082h <- 00h
  eeprom addr:083h <- 36h
  eeprom addr:084h <- 36h
  eeprom addr:085h <- 00h
  eeprom addr:086h <- 00h
  eeprom addr:087h <- 00h
  eeprom addr:088h <- 35h
  eeprom addr:089h <- 36h
  eeprom addr:08Ah <- 00h
  eeprom addr:08Bh <- 00h
  eeprom addr:08Ch <- 08h
  eeprom addr:08Dh <- 14h
  eeprom addr:08Eh <- 22h
  eeprom addr:08Fh <- 41h
  eeprom addr:090h <- 00h
  eeprom addr:091h <- 14h
  eeprom addr:092h <- 14h
  eeprom addr:093h <- 14h
  eeprom addr:094h <- 14h
  eeprom addr:095h <- 14h
  eeprom addr:096h <- 00h
  eeprom addr:097h <- 41h
  eeprom addr:098h <- 22h
  eeprom addr:099h <- 14h
  eeprom addr:09Ah <- 08h
  eeprom addr:09Bh <- 20h
  eeprom addr:09Ch <- 40h
  eeprom addr:09Dh <- 45h
  eeprom addr:09Eh <- 48h
  eeprom addr:09Fh <- 30h
  eeprom addr:0A0h <- 26h
  eeprom addr:0A1h <- 49h
  eeprom addr:0A2h <- 4Fh
  eeprom addr:0A3h <- 41h
  eeprom addr:0A4h <- 3Eh
  eeprom addr:0A5h <- 3Fh
  eeprom addr:0A6h <- 44h
  eeprom addr:0A7h <- 44h
  eeprom addr:0A8h <- 44h
  eeprom addr:0A9h <- 3Fh
  eeprom addr:0AAh <- 7Fh
  eeprom addr:0ABh <- 49h
  eeprom addr:0ACh <- 49h
  eeprom addr:0ADh <- 49h
  eeprom addr:0AEh <- 36h
  eeprom addr:0AFh <- 3Eh
  eeprom addr:0B0h <- 41h
  eeprom addr:0B1h <- 41h
  eeprom addr:0B2h <- 41h
  eeprom addr:0B3h <- 22h
  eeprom addr:0B4h <- 7Fh
  eeprom addr:0B5h <- 41h
  eeprom addr:0B6h <- 41h
  eeprom addr:0B7h <- 22h
  eeprom addr:0B8h <- 1Ch
  eeprom addr:0B9h <- 7Fh
  eeprom addr:0BAh <- 49h
  eeprom addr:0BBh <- 49h
  eeprom addr:0BCh <- 49h
  eeprom addr:0BDh <- 41h
  eeprom addr:0BEh <- 7Fh
  eeprom addr:0BFh <- 48h
  eeprom addr:0C0h <- 48h
  eeprom addr:0C1h <- 48h
  eeprom addr:0C2h <- 40h
  eeprom addr:0C3h <- 3Eh
  eeprom addr:0C4h <- 41h
  eeprom addr:0C5h <- 49h
  eeprom addr:0C6h <- 49h
  eeprom addr:0C7h <- 2Fh
  eeprom addr:0C8h <- 7Fh
  eeprom addr:0C9h <- 08h
  eeprom addr:0CAh <- 08h
  eeprom addr:0CBh <- 08h
  eeprom addr:0CCh <- 7Fh
  eeprom addr:0CDh <- 00h
  eeprom addr:0CEh <- 41h
  eeprom addr:0CFh <- 7Fh
  eeprom addr:0D0h <- 41h
  eeprom addr:0D1h <- 00h
  eeprom addr:0D2h <- 02h
  eeprom addr:0D3h <- 01h
  eeprom addr:0D4h <- 41h
  eeprom addr:0D5h <- 7Eh
  eeprom addr:0D6h <- 40h
  eeprom addr:0D7h <- 7Fh
  eeprom addr:0D8h <- 08h
  eeprom addr:0D9h <- 14h
  eeprom addr:0DAh <- 22h
  eeprom addr:0DBh <- 41h
  eeprom addr:0DCh <- 7Fh
  eeprom addr:0DDh <- 01h
  eeprom addr:0DEh <- 01h
  eeprom addr:0DFh <- 01h
  eeprom addr:0E0h <- 01h
  eeprom addr:0E1h <- 7Fh
  eeprom addr:0E2h <- 20h
  eeprom addr:0E3h <- 18h
  eeprom addr:0E4h <- 20h
  eeprom addr:0E5h <- 7Fh
  eeprom addr:0E6h <- 7Fh
  eeprom addr:0E7h <- 10h
  eeprom addr:0E8h <- 08h
  eeprom addr:0E9h <- 04h
  eeprom addr:0EAh <- 7Fh
  eeprom addr:0EBh <- 3Eh
  eeprom addr:0ECh <- 41h
  eeprom addr:0EDh <- 41h
  eeprom addr:0EEh <- 41h
  eeprom addr:0EFh <- 3Eh
  eeprom addr:0F0h <- 7Fh
  eeprom addr:0F1h <- 48h
  eeprom addr:0F2h <- 48h
  eeprom addr:0F3h <- 48h
  eeprom addr:0F4h <- 30h
  eeprom addr:0F5h <- 3Eh
  eeprom addr:0F6h <- 41h
  eeprom addr:0F7h <- 45h
  eeprom addr:0F8h <- 42h
  eeprom addr:0F9h <- 3Dh
  eeprom addr:0FAh <- 7Fh
  eeprom addr:0FBh <- 48h
  eeprom addr:0FCh <- 4Ch
  eeprom addr:0FDh <- 4Ah
  eeprom addr:0FEh <- 31h
  eeprom addr:0FFh <- 31h
  WRITE OK  at 9:17,   time:4.242 sec

the enclose picture is from my programmer soft.

**KVLV** · - 30th December 2010, 19:11

Thanks scalerobotics.

I have a temp solution, workaround.

this program will write the needed data to the eeprom and use the one posted above to read.

Code:

'****************************************************************
'*  Name    : UNTITLED.BAS                                      *
'*  Author  : KVLV                                              *
'*  Notice  : Copyright (c) 2010 VANCOUVER                      *
'*          : All Rights Reserved                               *
'*  Date    : 12/30/2010                                        *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************
'chip use 18F2620
'
DEFINE LOADER_USED 1 'for bootstrap loader
define OSC 20
'define HSER_BAUD 19200  ' on pc side set to 19200 8N1 (8 data bits, no parity bit, 1 stop bit)
define HSER_BAUD 19200
' Set receive register to receiver enabled
DEFINE HSER_RCSTA 90h  
' Set transmit register to transmitter enabled
DEFINE HSER_TXSTA 20h  

B0 var word[1024]
C var word


TRISA=%00000000       '0=output
TRISB=%00000000       '1 = input
TRISC=%00000000
ADCON0=%11000000
ADCON1=%00000111
CMCON =%00000111                   ' Comparators = off

INTCON2.7=0 ' Enable Pull-Up's    PIC18F2620   'VERIFIED

data %00000000, %00000000, %00000000, %00000000, %00000000 'space
data %00000000, %00000000, %01111001, %00000000, %00000000 '!
data %00000000, %01110000, %00000000, %01110000, %00000000 'double_quotes
data %00010100, %01111111, %00010100, %01111111, %00010100 'hash
data %00010010, %00101010, %01111111, %00101010, %00100100 'dollar_sign
data %01100010, %01100100, %00001000, %00010011, %00100011 'percent
data %00110110, %01001001, %01010101, %00100010, %00000101 'ampersand
data %00000000, %01010000, %01100000, %00000000, %00000000 'apostrophe
data %00000000, %00011100, %00100010, %01000001, %00000000 'left_parenthesis
data %00000000, %01000001, %00100010, %00011100, %00000000 'right_parenthesis
data %00010100, %00001000, %00111110, %00001000, %00010100 'asterisk
data %00001000, %00001000, %00111110, %00001000, %00001000 'plus
data %00000000, %00000101, %00000110, %00000000, %00000000 'comma
data %00001000, %00001000, %00001000, %00001000, %00001000 'minus
data %00000000, %00000011, %00000011, %00000000, %00000000 'full_stop
data %00000010, %00000100, %00001000, %00010000, %00100000 'forward_slash
data %00111110, %01000101, %01001001, %01010001, %00111110 'zero
data %00000000, %00100001, %01111111, %00000001, %00000000 'one
data %00100001, %01000011, %01000101, %01001001, %00110001 'two
data %01000010, %01000001, %01010001, %01101001, %01000110 'three
data %00001100, %00010100, %00100100, %01111111, %00000100 'four
data %01110010, %01010001, %01010001, %01010001, %01001110 'five
data %00011110, %00101001, %01001001, %01001001, %00000110 'six
data %01000000, %01000111, %01001000, %01010000, %01100000 'seven
data %00110110, %01001001, %01001001, %01001001, %00110110 'eight
data %00110000, %01001001, %01001001, %01001010, %00111100 'nine
data %00000000, %00110110, %00110110, %00000000, %00000000 'colon
data %00000000, %00110101, %00110110, %00000000, %00000000 'semicolon
data %00001000, %00010100, %00100010, %01000001, %00000000 'less_than
data %00010100, %00010100, %00010100, %00010100, %00010100 'equals
data %00000000, %01000001, %00100010, %00010100, %00001000 'greater_than
data %00100000, %01000000, %01000101, %01001000, %00110000 'question_mark
data %00100110, %01001001, %01001111, %01000001, %00111110 'at
data %00111111, %01000100, %01000100, %01000100, %00111111 'A
data %01111111, %01001001, %01001001, %01001001, %00110110 'B
data %00111110, %01000001, %01000001, %01000001, %00100010 'C
data %01111111, %01000001, %01000001, %00100010, %00011100 'D
data %01111111, %01001001, %01001001, %01001001, %01000001 'E
data %01111111, %01001000, %01001000, %01001000, %01000000 'F
data %00111110, %01000001, %01001001, %01001001, %00101111 'G
data %01111111, %00001000, %00001000, %00001000, %01111111 'H
data %00000000, %01000001, %01111111, %01000001, %00000000 'I
data %00000010, %00000001, %01000001, %01111110, %01000000 'J
data %01111111, %00001000, %00010100, %00100010, %01000001 'K
data %01111111, %00000001, %00000001, %00000001, %00000001 'L
data %01111111, %00100000, %00011000, %00100000, %01111111 'M
data %01111111, %00010000, %00001000, %00000100, %01111111 'N
data %00111110, %01000001, %01000001, %01000001, %00111110 'O
data %01111111, %01001000, %01001000, %01001000, %00110000 'P
data %00111110, %01000001, %01000101, %01000010, %00111101 'Q
data %01111111, %01001000, %01001100, %01001010, %00110001 'R
'data %00110001, %01001001, %01001001, %01001001, %01000110 'S
b0[255]=%00110010:b0[256]=%01001001:b0[257]=%01001001:b0[258]=%01001001:b0[259]=%00100110 'S   'corrected dec 30.2010
b0[260]=%01000000:b0[261]=%01000000:b0[262]=%01111111:b0[263]=%01000000:b0[264]=%01000000 'T
b0[265]=%01111110:b0[266]=%00000001:b0[267]=%00000001:b0[268]=%00000001:b0[269]=%01111110 'U
b0[270]=%01111100:b0[271]=%00000010:b0[272]=%00000001:b0[273]=%00000010:b0[274]=%01111100 'V
b0[275]=%01111110:b0[276]=%00000001:b0[277]=%00001110:b0[278]=%00000001:b0[279]=%01111110 'W
b0[280]=%01100011:b0[281]=%00010100:b0[282]=%00001000:b0[283]=%00010100:b0[284]=%01100011 'X
b0[285]=%01110000:b0[286]=%00001000:b0[287]=%00000111:b0[288]=%00001000:b0[289]=%01110000 'Y
b0[290]=%01000011:b0[291]=%01000101:b0[292]=%01001001:b0[293]=%01010001:b0[294]=%01100001 'Z
b0[295]=%00000000:b0[296]=%01111111:b0[297]=%01000001:b0[298]=%01000001:b0[299]=%00000000 'left_square
b0[300]=%00100000:b0[301]=%00010000:b0[302]=%00001000:b0[303]=%00000100:b0[304]=%00000010 'back_slash
b0[305]=%00000000:b0[306]=%01000001:b0[307]=%01000001:b0[308]=%01111111:b0[309]=%00000000 'right_square
b0[310]=%00010000:b0[311]=%00100000:b0[312]=%01000000:b0[313]=%00100000:b0[314]=%00010000 'circumflex
b0[315]=%00000001:b0[316]=%00000001:b0[317]=%00000001:b0[318]=%00000001:b0[319]=%00000001 'underscore
b0[320]=%00000000:b0[321]=%01000000:b0[322]=%00100000:b0[323]=%00010000:b0[324]=%00000000 'grave_accent
b0[325]=%00000010:b0[326]=%00010101:b0[327]=%00010101:b0[328]=%00010101:b0[329]=%00001111 'a
b0[330]=%01111111:b0[331]=%00001001:b0[332]=%00001001:b0[333]=%00001001:b0[334]=%00000110 'b
b0[335]=%00001110:b0[336]=%00010001:b0[337]=%00010001:b0[338]=%00010001:b0[339]=%00010001 'c
b0[340]=%00000110:b0[341]=%00001001:b0[342]=%00001001:b0[343]=%00001001:b0[344]=%01111111 'd
b0[345]=%00001110:b0[346]=%00010101:b0[347]=%00010101:b0[348]=%00010101:b0[349]=%00001101 'e
b0[350]=%00000000:b0[351]=%00001000:b0[352]=%00111111:b0[353]=%01001000:b0[354]=%00100000 'f
b0[355]=%00001001:b0[356]=%00010101:b0[357]=%00010101:b0[358]=%00010101:b0[359]=%00011110 'g
b0[360]=%01111111:b0[361]=%00001000:b0[362]=%00001000:b0[363]=%00001000:b0[364]=%00000111 'h
b0[365]=%00000000:b0[366]=%00000000:b0[367]=%00101111:b0[368]=%00000000:b0[369]=%00000000 'i
b0[370]=%00000010:b0[371]=%00000001:b0[372]=%00000001:b0[373]=%01011110:b0[374]=%00000000 'j
b0[375]=%00000000:b0[376]=%01111111:b0[377]=%00000100:b0[378]=%00001010:b0[379]=%00010001 'k
b0[380]=%00000000:b0[381]=%01000001:b0[382]=%01111111:b0[383]=%00000001:b0[384]=%00000000 'l
b0[385]=%00011111:b0[386]=%00010000:b0[387]=%00001110:b0[388]=%00010000:b0[389]=%00011111 'm
b0[390]=%00011111:b0[391]=%00001000:b0[392]=%00010000:b0[393]=%00010000:b0[394]=%00001111 'n
b0[395]=%00001110:b0[396]=%00010001:b0[397]=%00010001:b0[398]=%00010001:b0[399]=%00001110 'o
b0[400]=%00011111:b0[401]=%00010100:b0[402]=%00010100:b0[403]=%00010100:b0[404]=%00001000 'p
b0[405]=%00001000:b0[406]=%00010100:b0[407]=%00010100:b0[408]=%00010100:b0[409]=%00011111 'q
b0[410]=%00011111:b0[411]=%00001000:b0[412]=%00010000:b0[413]=%00010000:b0[414]=%00001000 'r
b0[415]=%00001001:b0[416]=%00010101:b0[417]=%00010101:b0[418]=%00010101:b0[419]=%00010010 's
b0[420]=%00010000:b0[421]=%00010000:b0[422]=%01111110:b0[423]=%00010001:b0[424]=%00010010 't
b0[425]=%00011110:b0[426]=%00000001:b0[427]=%00000001:b0[428]=%00000001:b0[429]=%00011110 'u
b0[430]=%00011100:b0[431]=%00000010:b0[432]=%00000001:b0[433]=%00000010:b0[434]=%00011100 'v
b0[435]=%00011110:b0[436]=%00000001:b0[437]=%00000110:b0[438]=%00000001:b0[439]=%00011110 'w
b0[440]=%00010001:b0[441]=%00001010:b0[442]=%00000100:b0[443]=%00001010:b0[444]=%00010001 'x
b0[445]=%00010000:b0[446]=%00001001:b0[447]=%00000110:b0[448]=%00001000:b0[449]=%00010000 'y
b0[450]=%00010001:b0[451]=%00010011:b0[452]=%00010101:b0[453]=%00011001:b0[454]=%00010001 'z
b0[455]=%00001000:b0[456]=%00110110:b0[457]=%01000001:b0[458]=%01000001:b0[459]=%00000000 'leftcurly
b0[460]=%00000000:b0[461]=%00000000:b0[462]=%01111111:b0[463]=%00000000:b0[464]=%00000000 'vertline
b0[465]=%00000000:b0[466]=%01000001:b0[467]=%01000001:b0[468]=%00110110:b0[469]=%00001000 'rightcurly
b0[470]=%00000100:b0[471]=%00001000:b0[472]=%00001000:b0[473]=%00001000:b0[474]=%00010000 'tilde
b0[475]=%01111111:b0[476]=%01000001:b0[477]=%01000001:b0[478]=%01000001:b0[479]=%01111111 'del 
b0[480]=$ef 'eof



      for c=255 to 480
           write c,b0[c]
           pause 1
      next c




end

**KVLV** · - 2nd January 2011, 22:16

it turns out that my programmer program cannot load eeprom passed the 255 bytes and since corrected.
the tinybootloader is also cannot write beyond 255bytes

so my temp solutions works for now.

Thread: Help;; eeprom won't read/write beyond address 255

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