Peripheral 4 Setting Register - Revision history

Xalior: Xalior moved page Peripheral 4 Register to Peripheral 4 Setting Register: match formal nextreg.txt name

2025-10-13T14:47:49Z

Xalior moved page Peripheral 4 Register to Peripheral 4 Setting Register: match formal nextreg.txt name

← Older revision		Revision as of 15:47, 13 October 2025
(No difference)

2020-03-30T08:58:59Z

core 3.1.3 changes/refresh

← Older revision		Revision as of 09:58, 30 March 2020
Line 23:		Line 23:
	\|-		\|-
	\| 1-0 \|\| scanlines weight (0 after Hard-reset):		\| 1-0 \|\| scanlines weight (0 after Hard-reset):
	%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%		(since core3.1.1) %00 = scanlines off, %01 = scanlines 50%, %10 = scanlines 25%, %11 = scanlines 12.5%<br>(before: <del>%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%</del>)
	\|}		\|}

2019-12-04T23:13:46Z

core 3.0.5 changes/refresh

← Older revision		Revision as of 00:13, 5 December 2019
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
	\|ShortDesc=Sets scanlines, AY mono output, Sprite-id lockstep, ~~disables Kempston~~ and ~~divMMC ports~~.		\|ShortDesc=Sets scanlines, AY mono output, Sprite-id lockstep, reset DivMMC mapram and disable HDMI audio.
	}}		}}
	{\| class="wikitable"		{\| class="wikitable"
Line 19:		Line 19:
	(was "Disables Kempston mouse port ($DF)" in core 2.0)		(was "Disables Kempston mouse port ($DF)" in core 2.0)
	\|-		\|-
	\| 2 \|\| ~~Reserved, use~~ 0		\| 2 \|\| 1 to silence HDMI audio (hard reset = 0) (since core 3.0.5)
	(was "Disables divMMC ports ($E3, $E7, $EB) if set" in core 2.0)		(was "Disables divMMC ports ($E3, $E7, $EB) if set" in core 2.0)
	\|-		\|-

2019-11-11T12:34:27Z

core 3.0 changes/refresh

← Older revision		Revision as of 13:34, 11 November 2019
Line 12:		Line 12:
	\| 6 \|\| Enables AY1 "mono" output (1 = mono, 0 default)		\| 6 \|\| Enables AY1 "mono" output (1 = mono, 0 default)
	\|-		\|-
	\| 5 \|\| Enables AY0 "mono" output		\| 5 \|\| Enables AY0 "mono" output (0 after Hard-reset)
	\|-		\|-
	\| 4 \|\| Sprite id lockstep (1 = {{NextRegNo\|$34}} and {{PortNo\|$303B}} are in lockstep, 0 default)		\| 4 \|\| Sprite id lockstep (1 = {{NextRegNo\|$34}} and {{PortNo\|$303B}} are in lockstep, 0 default)
	\|-		\|-
	\| 3 \|\| (~~core 2.0)~~ Disables Kempston mouse port ($DF) ~~if set~~		\| 3 \|\| 1 to reset mapram bit in DivMMC
	(core 3.0) ~~1 to reset mapram bit in divmmc~~		(was "Disables Kempston mouse port ($DF)" in core 2.0)
	\|-		\|-
	\| 2 \|\| (~~core 2.0)~~ Disables divMMC ports ($E3, $E7, $EB) if set		\| 2 \|\| Reserved, use 0
	(core 3.0) ~~Reserved, use 0~~		(was "Disables divMMC ports ($E3, $E7, $EB) if set" in core 2.0)
	\|-		\|-
	\| 1-0 \|\| scanlines ~~configuration~~ (0 after ~~a PoR or~~ Hard-reset):		\| 1-0 \|\| scanlines weight (0 after Hard-reset):
	%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%		%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%
	\|}		\|}

2019-10-03T21:22:27Z

core 3.0 changes

← Older revision		Revision as of 22:22, 3 October 2019
Line 16:		Line 16:
	\| 4 \|\| Sprite id lockstep (1 = {{NextRegNo\|$34}} and {{PortNo\|$303B}} are in lockstep, 0 default)		\| 4 \|\| Sprite id lockstep (1 = {{NextRegNo\|$34}} and {{PortNo\|$303B}} are in lockstep, 0 default)
	\|-		\|-
	\| 3 \|\| Disables Kempston mouse port ($DF) if set		\| 3 \|\| (core 2.0) Disables Kempston mouse port ($DF) if set
			(core 3.0) 1 to reset mapram bit in divmmc
	\|-		\|-
	\| 2 \|\| Disables divMMC ports ($E3, $E7, $EB) if set		\| 2 \|\| (core 2.0) Disables divMMC ports ($E3, $E7, $EB) if set
			(core 3.0) Reserved, use 0
	\|-		\|-
	\| 1-0 \|\| scanlines configuration (0 after a PoR or Hard-reset):		\| 1-0 \|\| scanlines configuration (0 after a PoR or Hard-reset):
	%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%		%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25%
	\|}		\|}

2019-04-14T10:00:19Z

6 revisions imported

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

2019-01-27T08:33:50Z

← Older revision		Revision as of 09:33, 27 January 2019
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
	\|ShortDesc=Sets scanlines, AY mono output, disables Kempston and divMMC ports.		\|ShortDesc=Sets scanlines, AY mono output, Sprite-id lockstep, disables Kempston and divMMC ports.
	}}		}}
	{\| class="wikitable"		{\| class="wikitable"

2019-01-27T07:03:30Z

Core 2.00.26 changes

← Older revision		Revision as of 08:03, 27 January 2019
Line 10:		Line 10:
	\| 7 \|\| Enables AY2 "mono" output (A+B+C is sent to both R and L channels, makes it a bit louder than stereo mode).		\| 7 \|\| Enables AY2 "mono" output (A+B+C is sent to both R and L channels, makes it a bit louder than stereo mode).
	\|-		\|-
	\| 6 \|\| Enables AY1 "mono" output		\| 6 \|\| Enables AY1 "mono" output (1 = mono, 0 default)
	\|-		\|-
	\| 5 \|\| Enables AY0 "mono" output		\| 5 \|\| Enables AY0 "mono" output
	\|-		\|-
	\| 4 \|\| ~~Reserved~~, ~~must be~~ 0		\| 4 \|\| Sprite id lockstep (1 = {{NextRegNo\|$34}} and {{PortNo\|$303B}} are in lockstep, 0 default)
	\|-		\|-
	\| 3 \|\| Disables Kempston mouse port ($DF) if set		\| 3 \|\| Disables Kempston mouse port ($DF) if set

2018-12-24T13:11:35Z

← Older revision		Revision as of 14:11, 24 December 2018
Line 3:		Line 3:
	\|Readable=Yes		\|Readable=Yes
	\|Writable=Yes		\|Writable=Yes
	\|ShortDesc=Sets scanlines, disables Kempston and divMMC ports.		\|ShortDesc=Sets scanlines, AY mono output, disables Kempston and divMMC ports.
	}}		}}
	{\| class="wikitable"		{\| class="wikitable"

2018-12-24T13:06:04Z

Core 2.00.22 changes, and forum knowledge from Jim Bagley distilled.

← Older revision		Revision as of 14:06, 24 December 2018
Line 8:		Line 8:
	! Bit !! Function		! Bit !! Function
	\|-		\|-
	\| 7-5 \|\| ~~Makes particular AY~~ "~~monophonic~~" ~~(source: KS update #41)~~		\| 7 \|\| Enables AY2 "mono" output (A+B+C is sent to both R and L channels, makes it a bit louder than stereo mode).
			\|-
			\| 6 \|\| Enables AY1 "mono" output
			\|-
			\| 5 \|\| Enables AY0 "mono" output
	\|-		\|-
	\| 4 \|\| Reserved, must be 0		\| 4 \|\| Reserved, must be 0