Expert cartridge loader ======================= info by Fabrizio Gennari Used by the Trilogic Expert cartridge to save freezed games. Also some commercial games (Eye of Horus...) use it Encoding: --------- Threshold: $141 (321) clock cycles Bit 0: TAP byte $1F Bit 1: TAP byte $33 Data Endianess: MOST Significant bit First Lead-In Byte : $0F Sync sequence: $0E, $0D, $0C, $0B, $0A, $09, $08, $07, $06, $05, $04, $03, $02, $01, $00 Structure: ---------- The length of the block is calculated from Start and End address, which is written at the start of the block (after the SYNC Byte): 00 Start Address of data (Low, High byte) 02 End Address of data (Low, High byte) 04 Data 05 Checksum (sum of the Data bytes + 1 for each Data byte, modulo $100 (256))