Micromotive

Found on:
"Ice Palace"

Loader files:
ROM Header
Only filename.
ROM Data
Autostart, Turbo loader

Encoding:
Endianess:MSbF
Threshold:0x0173
Lead-in:246 x 0x01
Sync:0x09 .. 0x01
Byte:8 bits
0-bit:Short

Structure:
Header:No
Checksum:Yes

Notes:
First file is loaded backwards. Load address is hardcoded.
0xffff - 0x0500 (Inclusive)
Second file is loaded in normal order from 0xE000 to 0xFFFE (Inclusive).
Threshold also is set to 0x170 for second file. Shouldn't make any difference.

Checksum:
EOR of all payload bytes. First byte after payload is the checksum byte.