some help with math

[longpole001]

count in the table is Menu_subtxt varable
end code in the table is the value of SDC_Byte
byte code in table the intrum caculation prior to mulitply data length

[HenrikOlsson]

Try

EndValue = ((Count - 1) // 6) * 42

Is that what you want?

/Henrik.

[longpole001]

interesting results

i now format the data as word value which now stores the data in the correct byte by byte sequance form ,

however readcode reads the address data back incorectly for a given address when reading as byte value

i assume its cos readcode is word based command ???

is there a way to read the data back for each address byte only ?

as can be seen on address 5172, 5173 byte values are incorrect for the given address

LG_Font_Base:
          ' Note gl_x char space need be 12 , not normal 24 when using chr else too big a gap space _
          ' Code for "-"  Asci 45    90 real values _
@ dw      0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000;,0x00      
@ dw      0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x3FFC,0x003F,0xFC00,0x3FFC     
@ dw      0x003F,0xFC00,0x3FFC,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000;,0x00  
@ dw      0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000

part of flash dump of font stored

5170- 0000 3ffc 003f fc00 3ffc 003f fc00 3ffc 
5180- 0000 0000 0000 0000 0000 0000 0000 0000 
5190- 0000 0000 0000 0000 0000 0000 0000 0000 
51a0- 0000 

terminal debug dump - for each address read by readcode 
5170- 0  ,  5171- 0,
5172- FC,  5173- 3F,
5174- 3F,  5175- 0,
5176- 0 ,   5177- FC,
5178- FC,  5179- 3F,
517A- 3F,  517B- 0,
517C- 0 ,  517D- FC,
517E- FC, 517F- 3F,
5180- 0  , 5181- 0

[richard]

I will see if I can explain it

pic18 pgm mem is stored as words , so if the bytes are not an even number the last byte is padded with 00


if we store this @ db "say",34,"hello",34,0

then its stored like this lst file extract

00014A 6173 2279 6568 db "say",34,"hello",34,0 ; note order looks reversed but its really lowbyte first
6C6C 226F 0000

when readcode reads it back

its lowbyte, highbyte

so the string is returned in order as say"hello",0

[richard]

when stored as words
@ dw 0x0000,0x0000,0x53d7,0x53d7,0x53d7,0x53d7,0x53d7,0 x53d7,0x53d7,0x53d7,0x53d7,0x0000,0x0000,0x0000,0x 0000,0x0000


lst file looks like this


003CF6 0000 0000
53D7 06827
0000,0x0000
53D7 53D7 53D7
53D7 53D7 53D7
53D7 53D7 0000
0000 0000 0000
0000
note the order is now not reversed