AYC - Revision history

RockRiver at 09:15, 11 May 2016

2016-05-11T09:15:39Z

← Older revision		Revision as of 09:15, 11 May 2016
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	- TsP The Soundtrackker Player by TomEtJerry		- TsP The Soundtrackker Player by TomEtJerry

	http://www.cpc-power.com/index.php?page=detail&num=~~8051~~		http://www.cpc-power.com/index.php?page=detail&num=5075

RockRiver at 08:23, 11 May 2016

2016-05-11T08:23:45Z

← Older revision		Revision as of 08:23, 11 May 2016
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	- Dual Module Player by Hermol		- Dual Module Player by Hermol

	http://www.cpc-power.com/index.php?page=detail&num=~~8742~~		http://www.cpc-power.com/index.php?page=detail&num=5251

	- TsP The Soundtrackker Player by TomEtJerry		- TsP The Soundtrackker Player by TomEtJerry

	http://www.cpc-power.com/index.php?page=detail&num=~~5251~~		http://www.cpc-power.com/index.php?page=detail&num=8051

RockRiver at 08:08, 11 May 2016

2016-05-11T08:08:16Z

← Older revision		Revision as of 08:08, 11 May 2016
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	----		----
	- Dual Module Player by Hermol		- Dual Module Player by Hermol

			http://www.cpc-power.com/index.php?page=detail&num=8742

	- TsP The Soundtrackker Player by TomEtJerry		- TsP The Soundtrackker Player by TomEtJerry

			http://www.cpc-power.com/index.php?page=detail&num=5251

Fkey: /* Data */

2013-05-22T08:19:04Z

Data

← Older revision		Revision as of 08:19, 22 May 2013
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	=== Data ===		=== Data ===

	To be ~~published as soon as possible (Fkey)~~		All registers data have the same format, which is a mix of Patterns and Flags.<br />
			A Pattern can be of two types :
			:* a Byte which can be directly send to the PSG
			:* a Previously played Pattern identified by an offset and a length in the deflated buffer
			Flags are included in the stream of Patterns to indicate the type of Pattern.

			To be finished as soon as possible (Fkey)

	=== Sample File ===		=== Sample File ===

Fkey: /* Sample File */

2013-05-22T06:39:27Z

Sample File

← Older revision		Revision as of 06:39, 22 May 2013
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	=== Sample File ===		=== Sample File ===

	The marvelous "Jim power 2.ym" has been converted to the AYC format and the following is what we get for the header.		The marvelous "Jim power 2.ym" has been converted to the AYC format and the following is what we get for the header.<br />
	Let's analyse this to understand how it works		Let's analyse this to understand how it works.

	[[File:JimPower_AYC_2.jpg]]		[[File:JimPower_AYC_2.jpg]]

			===== Header =====
			* Song length in VBL is : #1CE5 ( ~ 2 minutes 27 seconds)
			* Register 0 buffer size is #100 bytes
			* Register 0 Offset is calculated as follow : #002E + 4 + (3 x 0)= #0032
			* Register 1 buffer syize is #100 bytes
			* Register 1 Offset is calculated as follow : #03B2 + 4 + (3 x 1) = #03B9
			* Register 2 buffer size is #100 bytes
			* Register 2 Offset is calculated as follow : #04DA + 4 + (3 x 2)
			* ...

	== ToDo ==		== ToDo ==

Fkey: /* AYC file format */

2013-05-22T06:30:51Z

AYC file format

← Older revision		Revision as of 06:30, 22 May 2013
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	To be published as soon as possible (Fkey)		To be published as soon as possible (Fkey)


			=== Sample File ===

			The marvelous "Jim power 2.ym" has been converted to the AYC format and the following is what we get for the header.
			Let's analyse this to understand how it works

			[[File:JimPower_AYC_2.jpg]]

	== ToDo ==		== ToDo ==

Fkey: /* AYC file format */

2013-05-21T14:26:03Z

AYC file format

← Older revision		Revision as of 14:26, 21 May 2013
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	== AYC file format ==		== AYC file format ==
	----		----
	An AYC file is basically just a particular YM file that has been compressed.<br />		An AYC file is basically just a particular YM file that has been compressed using a Lempel-Ziv like algorithm.<br />
	There are two main sections inside an AYC file:<br />		There are two main sections inside an AYC file:<br />
	* Header		* Header

Fkey: /* AYC file format */

2013-04-23T09:38:19Z

AYC file format

← Older revision		Revision as of 09:38, 23 April 2013
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	* Header		* Header
	* Data		* Data


	=== Header ===		=== Header ===
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	1. Two sizes defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />		1. Two sizes defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
	2. Relative offsets, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E + 03 + 4 = #32		2. Relative offsets, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E + 03 + 4 = #32

			=== Data ===

			To be published as soon as possible (Fkey)

	== ToDo ==		== ToDo ==

Fkey: /* Header */

2013-04-23T09:37:02Z

Header

← Older revision		Revision as of 09:37, 23 April 2013
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	\| #00 \|\| 2 \|\| Song duration (number of vertical refresh period)		\| #00 \|\| 2 \|\| Song duration (number of vertical refresh period)
	\|-		\|-
	\| #02 \|\| 1 \|\| Buffer size for register 0		\| #02 \|\| 1 \|\| Buffer size<sup>1</sup> for register 0
	\|-		\|-
	\| #03 \|\| 2 \|\| Crunched data offset in the file for register 0		\| #03 \|\| 2 \|\| Crunched data offset<sup>2</sup> in the file for register 0
	\|-		\|-
	\| ...		\| ...
	\|-		\|-
	\| 3*n + #02 \|\| 1 \|\| Buffer size for register n		\| 3*n + #02 \|\| 1 \|\| Buffer size<sup>1</sup> for register n
	\|-		\|-
	\| 3*n + #03 \|\| 2 \|\| Crunched data offset in the file for register n		\| 3*n + #03 \|\| 2 \|\| Crunched data offset<sup>2</sup> in the file for register n
	\|-		\|-
	\| ...		\| ...
	\|-		\|-
	\| #29 \|\| 1 \|\| Buffer size for register 13		\| #29 \|\| 1 \|\| Buffer size<sup>1</sup> for register 13
	\|-		\|-
	\| #2A \|\| 2 \|\| Crunched data offset in the file for register 13		\| #2A \|\| 2 \|\| Crunched data offset<sup>2</sup> in the file for register 13
	\|-		\|-
	\| #2C \|\| 6 \|\| RESERVED (defaulted to #FFFFFFFFFFFF)		\| #2C \|\| 6 \|\| RESERVED (defaulted to #FFFFFFFFFFFF)
	\|}		\|}

	1. ~~There are only 2~~ sizes ~~originally~~ defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />		1. Two sizes defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
	2. ~~Offsets are relative~~, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E+03+4=#32		2. Relative offsets, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E + 03 + 4 = #32

	== ToDo ==		== ToDo ==

Fkey: /* Header */

2013-04-23T09:34:29Z

Header

← Older revision		Revision as of 09:34, 23 April 2013
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	\|}		\|}

	1. There are only 2 sizes originally defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes		1. There are only 2 sizes originally defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
	2. Offsets are relative, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E+03+4=#32		2. Offsets are relative, you must add n3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E+03+4=#32