Commodore 64: Ace of Aces Tape loader

@DrWatson

Published in 

C64 tape formats

 · 3 years ago

Can be found on...

• Ace of Aces
• Bounder
• Express Raider
• Way of the Tiger
• Xevious
• ...

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Threshold = $168 (360) clock cycles (TAP byte= $2C).
Bit 0 : $22
Bit 1 : $47
Endianess : MSbF
Pilot : $80 (usually *256)
Sync : $FF

Then...

2 bytes : Start Address (LSBF)
2 bytes : End Address (LSBF)
16 bytes : Filename
n bytes : Data
1 byte : Checksum (0 XOR all data bytes)