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https://github.com/curioustorvald/Terrarum.git
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51 lines
1.4 KiB
Plaintext
51 lines
1.4 KiB
Plaintext
Paper tape format header
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* Endianness: LITTLE
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'T '8 'p 't id en ti er // Terrarum 8-Bit punched tape;
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<payloads> // identifier: unique 32-bit int used by app
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================================================================================
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Music tape format
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* 8 bytes make one tape row
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identifier: 0x41 AB 41 EC // mabl_mek (marble machine)
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## Payloads:
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sp ed 00 00 00 00 00 00 // speed: ticks per minutes [1..65535]
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na me of th e- mu si c0 // name of the music
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mu st be th ir ty tw o- // 32 bytes long, padded with null(s)
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by te s- lo ng pa dd ed
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by nu ll ch ar ac te r0
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na me of th e- au th or // name of the author
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tw en ty fo ur by te s- // 24 bytes long, padded with null(s)
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lo ng pa dd ed by nu ll
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## Music data:
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bb bb bb bb bb bb bb bb // 64 bits make one tick
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^^ Bit 60 Bit 0 ^
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|Highest Lowest
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|Note Note
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|(C6) (C1)
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3 bits are program notes, which are:
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- 000 : NOP
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- 001 : (unused)
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- 010 : Halve the speed (applied to next tick)
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- 011 : Double the speed (applied to next tick)
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- 100 : Quarter the speed (applied to next tick)
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- 101 : Quadruple the speed (applied to next tick)
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- 110 : (unused)
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- 111 : Play current tick and halt
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================================================================================
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Computer tape format
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identifier: 0x7E 12 2A C0
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## Payloads: bytes |