Clip Window Control Register - Revision history

Ped7g: fix description for core3.1.5 functionality

2020-09-23T20:38:59Z

fix description for core3.1.5 functionality

← Older revision		Revision as of 21:38, 23 September 2020
Line 26:		Line 26:
	\| 7-6 \|\| the current Tilemap clip-window register index		\| 7-6 \|\| the current Tilemap clip-window register index
	\|-		\|-
	\| 5-4 \|\| the current Layer 2 clip-window register index		\| 5-4 \|\| the current ULA/LoRes (<del>was Layer 2 in older cores</del>) clip-window register index
	\|-		\|-
	\| 3-2 \|\| the current Sprite clip-window register index		\| 3-2 \|\| the current Sprite clip-window register index
	\|-		\|-
	\| 1-0 \|\| the current ULA/LoRes clip-window register index		\| 1-0 \|\| the current Layer 2 (<del>was ULA/LoRes in older cores</del>) clip-window register index
	\|}		\|}

	Each read index maps as 0: X1, 1: X2, 2: Y1 and 3: Y2 (the same order how the coordinates are written to particular clip-window register).		Each read index maps as 0: X1, 1: X2, 2: Y1 and 3: Y2 (the same order how the coordinates are written to particular clip-window register).

Specnext: 5 revisions imported

2019-04-14T09:59:50Z

5 revisions imported

← Older revision		Revision as of 10:59, 14 April 2019
(No difference)

wiki>Ped7g: Core 2.00.26 changes

2019-01-31T13:40:49Z

Core 2.00.26 changes

← Older revision		Revision as of 14:40, 31 January 2019
Line 9:		Line 9:
	! Bit !! Function		! Bit !! Function
	\|-		\|-
	\| 7-3 \|\| Reserved, must be 0		\| 7-4 \|\| Reserved, must be 0
			\|-
			\| 3 \|\| reset the Tilemap clip-window register index (by writing 1).
	\|-		\|-
	\| 2 \|\| reset the ULA/LoRes clip-window register index (by writing 1).		\| 2 \|\| reset the ULA/LoRes clip-window register index (by writing 1).
Line 22:		Line 24:
	! Bit !! Function		! Bit !! Function
	\|-		\|-
	\| 7-6 \|\| ~~Reserved~~		\| 7-6 \|\| the current Tilemap clip-window register index
	\|-		\|-
	\| 5-4 \|\| the current Layer 2 clip-window register index		\| 5-4 \|\| the current Layer 2 clip-window register index

wiki>Ped7g: Fixing read/write vs index auto increment description, thanks to Garry help on Facebook to identify the mistake

2019-01-06T23:17:32Z

Fixing read/write vs index auto increment description, thanks to Garry help on Facebook to identify the mistake

← Older revision		Revision as of 00:17, 7 January 2019
Line 31:		Line 31:
	\|}		\|}

	Each read index maps as 0: X1, 1: X2, 2: Y1 and 3: Y2 (the same order how the coordinates are ~~read/~~written to particular clip-window register).		Each read index maps as 0: X1, 1: X2, 2: Y1 and 3: Y2 (the same order how the coordinates are written to particular clip-window register).

wiki>Ped7g at 13:07, 23 December 2018

2018-12-23T13:07:17Z

← Older revision		Revision as of 14:07, 23 December 2018
Line 5:		Line 5:
	\|ShortDesc=Controls (resets) the clip-window registers indices.		\|ShortDesc=Controls (resets) the clip-window registers indices.
	}}		}}
			Write:
	{\| class="wikitable"		{\| class="wikitable"
	~~Write:~~
	! Bit !! Function		! Bit !! Function
	\|-		\|-
Line 19:		Line 19:

	Read:		Read:
			{\| class="wikitable"
	! Bit !! Function		! Bit !! Function
	\|-		\|-

wiki>Ped7g: forum

2018-12-23T13:06:25Z

forum

@@ Line 6: / Line 6: @@
 }}
 {| class="wikitable"
 ! Bit !! Function
 |-
@@ Line 17: / Line 18: @@
 |}
-Ped7g comment: it's a bit unclear what interesting info may be gained by reading this register (seems a bit useless to me). I posted question in forum and I will update the text if I will get explanation.
+Read:

wiki>Ped7g: added info + Core 2.00.22 changes (readable now)

2018-12-22T19:12:44Z

added info + Core 2.00.22 changes (readable now)

New page

{{NextRegister
|Number=$1C
|Readable=Yes
|Writable=Yes
|ShortDesc=Controls (resets) the clip-window registers indices.
}}
{| class="wikitable"
! Bit !! Function
|-
| 7-3 || Reserved, must be 0
|-
| 2 || reset the ULA/LoRes clip-window register index (by writing 1).
|-
| 1 || reset the Sprite clip-window register index (by writing 1).
|-
| 0 || reset the Layer 2 clip-window register index (by writing 1).
|}

Ped7g comment: it's a bit unclear what interesting info may be gained by reading this register (seems a bit useless to me). I posted question in forum and I will update the text if I will get explanation.