* Format of TI-92 PIC

Example of a 103 * 239 picture :
address   count   description
-------   -----   -----------
0000-0007     8 : "**TI92**" text
0008-0009     2 : 00 01 : seperator ???
000A-0011     8 : folder name
0012-0039    50 : "Bitmap file dated mm/dd/yy, hh:mm ^^^^^^^" text
003A-003B     2 : 0100 : seperator ???
003C-003F     4 : 52 00 00 00 : ???
0040-0047     8 : variable name
0048-004B     4 : 10 00 00 00 : ???
004C-004F     4 : file length
0050-0055     6 : A5 5A 00 00 00 00 : ???
= = = = = = = = = = = = = = = = = = = = = = = = = = = =
0056-0057     2 : size : 0C17 : 3095(d) bytes to read
0058-0059     2 : 103  : 0067 : 103(d) vertical resolution
005A-005B     2 : 239  : 00EF : 239(d) horizontal resolution
005C-0C6D  3090 : data : 103*240/8 = 3090 bytes stored in row major

  NOTE : the number of bits in each row will be aligned
         to a multiple of 8

0C6E-0C71     1 : DF : end mark
= = = = = = = = = = = = = = = = = = = = = = = = = = = =
0C6F-0C70     2 : checksum : from "bytes to read" to "end mark"



* Format of TI-92 TEXT

Adress          Count           Description

0000-0007       8               "**TI92**" text
0008-0009       2               00 01 separator
000A-0011       8               Folder name
0012-0039       40              "Text file..." text
003A-003F       6               01 00 52 00 00 00 separator
0040-0047       8               Variable name
0048-004B       4               0B 00 00 00 separator
004C-004F       4               File length (ex : &97 &01 &00 &00=> &(00 00 01 97) => 407)
0050-0055       6               A5 5A 00 00 00 00 separator
=========================Data==================================================
0056-0057       2               Size = bytes to read
0058-0059       2               00 01 separator (?)
005A- x         n               Text with chr(13) as lign separator
x+1 - x+2       1               End mark  = E0
===============================================================================
x+3 - x+4       2               Checksum from "size" to "end mark" (?)



* Format of TI-92 PRGM

Adress          Count           Description

0000-0007       8               "**TI92**" text
0008-0009       2               00 01 separator
000A-0011       8               Folder name
0012-0039       40              "Program file..." text
003A-003F       6               01 00 52 00 00 00 separator
0040-0047       8               Variable name
0048-004B       4               12 00 00 00 separator
004C-004F       4               File length (ex : &97 &01 &00 &00=> &(00 00 01 97) => 407)
0050-0055       6               A5 5A 00 00 00 00 separator
=========================Data==================================================
0056-0057       2               Size = bytes to read ex &02 &50 => &0250 = 592
0058-x          n               Program with chr(13) as lign separator
x+1 - x+ 8      7               00 19 E4 E5 00 00 08
x+8 - x+10      1               End mark  = DC
===============================================================================
x+11 - x+14     2               Checksum from ? to ?

Sacha KAERCHER
sacha.kaercher@eleve.emn.fr