AYC - Revision history

RockRiver at 09:15, 11 May 2016

2016-05-11T09:15:39Z

2016-05-11T08:23:45Z

2016-05-11T08:08:16Z

2013-05-22T08:19:04Z

‎Data

2013-05-22T06:39:27Z

‎Sample File

2013-05-22T06:30:51Z

‎AYC file format

2013-05-21T14:26:03Z

‎AYC file format

2013-04-23T09:38:19Z

‎AYC file format

2013-04-23T09:37:02Z

‎Header

2013-04-23T09:34:29Z

‎Header

← Older revision		Revision as of 09:15, 11 May 2016
Line 22:		Line 22:
	- 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

@@ Line 18: / Line 18: @@
 - 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
-http://www.cpc-power.com/index.php?page=detail&num=5251
+http://www.cpc-power.com/index.php?page=detail&num=8051

@@ Line 17: / Line 17: @@
 ----
 - Dual Module Player by Hermol
 - TsP The Soundtrackker Player by TomEtJerry

@@ Line 75: / Line 75: @@
 === 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 />
 === Sample File ===

@@ Line 80: / Line 80: @@
 === 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]]
 == ToDo ==

← Older revision		Revision as of 06:30, 22 May 2013
Line 76:		Line 76:

	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 ==

@@ Line 37: / Line 37: @@
 == 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 />
 * Header

@@ Line 41: / Line 41: @@
 * Header
 * Data
 === Header ===
@@ Line 73: / Line 72: @@
 . Two sizes defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
 . Relative offsets, you must add n*3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E + 0*3 + 4 = #32
 == ToDo ==

@@ Line 52: / Line 52: @@
 | #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)
 |}
-. There are only 2 sizes originally defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
+. Two sizes defined in the AYC file format, #01 = 256 bytes, #04 = 1024 bytes<br />
-. Offsets are relative, you must add n*3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E+0*3+4=#32
+. Relative offsets, you must add n*3+4 to each value (where n is the register number), offset "#2E" for register 0 means that data starts at #2E + 0*3 + 4 = #32
 == ToDo ==