37 00 00 10 ID 10000037 File, with a Section Table Section

41 00 00 10 Clip Art File

50 00 00 10 ID 10000050 File, structured as a list of sections.

Files starting with ID 37 00 00 10 have a Section Table Offset Section with the offset of the Section Table Section directly after the Header Section. This is better described in the File Structure chapter.

Offset Data Description

0000 ID UID1: 37 00 00 10: Header Section layout

0004 ID UID2: File kind

0008 ID UID3: Application ID

000C L UID4: Checksum of UID1, UID2 and UID3

0010

UID2 tells what kind of file is found. The values below are known:

UID2 UID1 Desciption

6D 00 00 10 37 00 00 10 Data file

UID3 is the Application ID. It is the same as used in the Application ID Section.

UID4 is a checksum of UID1 to UID3. It is computed by taking the exclusive-or (xor) of the values found it the tables below. Each value is only used when the corresponding bit is set to one.

UID4 can also be computed by using OPL function CheckUID$.

UID1 bit Value

bit 0 0x000045A0

bit 1 0x00008B40

bit 2 0x000006A1

bit 3 0x00000D42

bit 4 0x00001A84

bit 5 0x00003508

bit 6 0x00006A10

bit 7 0x0000D420

bit 8 0x45A00000

bit 9 0x8B400000

bit 10 0x06A10000

bit 11 0x0D420000

bit 12 0x1A840000

bit 13 0x35080000

bit 14 0x6A100000

bit 15 0xD4200000

bit 16 0x0000AA51

bit 17 0x00004483

bit 18 0x00008906

bit 19 0x0000022D

bit 20 0x0000045A

bit 21 0x000008B4

bit 22 0x00001168

bit 23 0x000022D0

bit 24 0xAA510000

bit 25 0x44830000

bit 26 0x89060000

bit 27 0x022D0000

bit 28 0x045A0000

bit 29 0x08B40000

bit 30 0x11680000

bit 31 0x22D00000

UID2 bit Value

bit 0 0x000076B4

bit 1 0x0000ED68

bit 2 0x0000CAF1

bit 3 0x000085C3

bit 4 0x00001BA7

bit 5 0x0000374E

bit 6 0x00006E9C

bit 7 0x0000DD38

bit 8 0x76B40000

bit 9 0xED680000

bit 10 0xCAF10000

bit 11 0x85C30000

bit 12 0x1BA70000

bit 13 0x374E0000

bit 14 0x6E9C0000

bit 15 0xDD380000

bit 16 0x00003730

bit 17 0x00006E60

bit 18 0x0000DCC0

bit 19 0x0000A9A1

bit 20 0x00004363

bit 21 0x000086C6

bit 22 0x00001DAD

bit 23 0x00003B5A

bit 24 0x37300000

bit 25 0x6E600000

bit 26 0xDCC00000

bit 27 0xA9A10000

bit 28 0x43630000

bit 29 0x86C60000

bit 30 0x1DAD0000

bit 31 0x3B5A0000

UID3 bit Value

bit 0 0x00003331

bit 1 0x00006662

bit 2 0x0000CCC4

bit 3 0x000089A9

bit 4 0x00000373

bit 5 0x000006E6

bit 6 0x00000DCC

bit 7 0x00001B98

bit 8 0x33310000

bit 9 0x66620000

bit 10 0xCCC40000

bit 11 0x89A90000

bit 12 0x03730000

bit 13 0x06E60000

bit 14 0x0DCC0000

bit 15 0x1B980000

bit 16 0x00001021

bit 17 0x00002042

bit 18 0x00004084

bit 19 0x00008108

bit 20 0x00001231

bit 21 0x00002462

bit 22 0x000048C4

bit 23 0x00009188

bit 24 0x10210000

bit 25 0x20420000

bit 26 0x40840000

bit 27 0x81080000

bit 28 0x12310000

bit 29 0x24620000

bit 30 0x48C40000

bit 31 0x91880000