LoRes X Scroll Register - Revision history

Xalior: Xalior moved page LoRes X Offset Register to LoRes X Scroll Register: match formal nextreg.txt name

2025-10-14T10:48:37Z

Xalior moved page LoRes X Offset Register to LoRes X Scroll Register: match formal nextreg.txt name

← Older revision		Revision as of 11:48, 14 October 2025
(No difference)

2019-11-11T14:27:38Z

core 3.0 changes/refresh

← Older revision		Revision as of 15:27, 11 November 2019
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
	\|ShortDesc=Pixel offset to use when drawing ~~ULA or~~ LoRes Layer.		\|ShortDesc=Pixel X offset (0..255) to use when drawing LoRes Layer.
	}}		}}
	bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)		bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)

	ULA screen at this moment scrolls horizontally only by whole "characters" (by multiples of 8 pixels), the low 3 bits of offset value are ignored (as of core 2.00.26, may get modified/updated in later cores to scroll per single pixel also horizontally).

	LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.		LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.

	~~'''NEW in core 3.0:'''~~

	~~This is now LoRes only offset, ULA will have it's own registers $26 and $27 (to be added to wiki)~~
	~~(also it's not 100% clear to me if this split did happen already in the version delivered to factory, or it will happen in the following bugfix update, but it should eventually happen).~~
	~~(I will update + cleanup this over time as I will be able to verify all the info)~~

2019-11-11T14:23:46Z

← Older revision		Revision as of 15:23, 11 November 2019
(No difference)

2019-10-04T05:53:18Z

core 3.0 changes

← Older revision		Revision as of 06:53, 4 October 2019
Line 10:		Line 10:

	LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.		LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.

			'''NEW in core 3.0:'''

			This is now LoRes only offset, ULA will have it's own registers $26 and $27 (to be added to wiki)
			(also it's not 100% clear to me if this split did happen already in the version delivered to factory, or it will happen in the following bugfix update, but it should eventually happen).
			(I will update + cleanup this over time as I will be able to verify all the info)

2019-04-14T10:00:23Z

5 revisions imported

← Older revision		Revision as of 11:00, 14 April 2019
(No difference)

2019-01-31T14:19:12Z

Core 2.00.26 changes

← Older revision		Revision as of 15:19, 31 January 2019
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
	\|ShortDesc=Pixel offset to use when drawing LoRes Layer.		\|ShortDesc=Pixel offset to use when drawing ULA or LoRes Layer.
	}}		}}
	bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)		bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)

	~~Being~~ only ~~128~~ pixels, ~~this allows~~ the ~~display~~ to scroll in "half-pixels", at the same resolution and smoothness as Layer 2.		ULA screen at this moment scrolls horizontally only by whole "characters" (by multiples of 8 pixels), the low 3 bits of offset value are ignored (as of core 2.00.26, may get modified/updated in later cores to scroll per single pixel also horizontally).

			LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.

2019-01-31T14:00:22Z

Ped7g moved page LoRes Layer X Offset to ULA / LoRes Layer X Offset Register: Core 2.00.26 extendens scrolling capability onto ULA layer

← Older revision		Revision as of 15:00, 31 January 2019
(No difference)

2018-12-22T20:48:02Z

Adding info from web docs.

← Older revision		Revision as of 21:48, 22 December 2018
Line 5:		Line 5:
	\|ShortDesc=Pixel offset to use when drawing LoRes Layer.		\|ShortDesc=Pixel offset to use when drawing LoRes Layer.
	}}		}}
			bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)

			Being only 128 pixels, this allows the display to scroll in "half-pixels", at the same resolution and smoothness as Layer 2.

2017-08-21T23:26:49Z

← Older revision		Revision as of 00:26, 22 August 2017
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
			\|ShortDesc=Pixel offset to use when drawing LoRes Layer.
	}}		}}

2017-08-21T20:48:49Z

Created page with "{{NextRegister |Number=$32 |Readable=Yes |Writable=Yes }}"

New page