Tometzki

Found on:
"Hercules - Slayer of the Damned"
"Spaghetti Western Simulator"

Loader files:
ROM Header
Turbo loader
ROM Data
Autostart, some code

Encoding:
Endianess:LSbF
Threshold:0x0208
Lead-in:~10247 x 0-bit + 1 x 1-bit
Sync:0xAA + 0x55
Byte:8 bits
0-bit:Short

Structure:
Header:Yes
Checksum:Yes
Data:
Data is ordered into groups of blocks.
Each group start with filename, 4 bytes, and contain a varying amount of blocks.
Blocks are 259 bytes, header(1), payload(256), checksum(2).

A group can be directly followed by a new lead-in and sync sequence and another group.

Group header:
0-3   Filename

Block header:
0   High byte of load start address.
      A value of 0x00 indicates that there are no more blocks in this block-group to load.

Checksum:
16 bit sum of all 256 payload bytes. Checksum value follows each block and is two bytes in low/high order.