ULA Control Port - Revision history

Johnnyo at 17:58, 16 December 2025

2025-12-16T17:58:13Z

@@ Line 2: / Line 2: @@
 |Number=$xxFE
 |NumberDec=254
-|ShortDesc=Controls border color and base Spectrum audio settings.
+|ShortDesc=Controls border color and base Spectrum audio settings, reflect the state of the keyboard
-|Readable=No
+|Readable=Yes
 |Writable=Yes
 }}
 When written to, adjusts the border color and audio devices as follows (soft reset = 0):
@@ Line 22: / Line 23: @@
 ---------
-Reading the port with certain particular high bytes will read the keyboard - see {{PortNo|$**FE}}. Bit 6 of the ULA byte is always the EAR input (signal from tape audio jack - also input from [https://wiki.specnext.dev/Pi:index Pi] digital audio is now mixed in, since 3.0 cores).
+Reading the port with certain particular high bytes will read the keyboard - see below. Bit 6 of the ULA byte is always the EAR input (signal from tape audio jack - also input from [https://wiki.specnext.dev/Pi:index Pi] digital audio is now mixed in, since 3.0 cores).

Ped7g at 11:50, 4 May 2020

2020-05-04T11:50:22Z

← Older revision		Revision as of 12:50, 4 May 2020
Line 1:		Line 1:
	{{Port		{{Port
	\|Number=$xxFE		\|Number=$xxFE
			\|NumberDec=254
	\|ShortDesc=Controls border color and base Spectrum audio settings.		\|ShortDesc=Controls border color and base Spectrum audio settings.
	\|Readable=No		\|Readable=No

Ped7g at 00:34, 16 April 2020

2020-04-16T00:34:14Z

← Older revision		Revision as of 01:34, 16 April 2020
Line 5:		Line 5:
	\|Writable=Yes		\|Writable=Yes
	}}		}}
	When written to, adjusts the border color and audio devices as follows:		When written to, adjusts the border color and audio devices as follows (soft reset = 0):

	{\| class="wikitable"		{\| class="wikitable"

Ped7g: adding info

2019-12-31T08:37:57Z

adding info

← Older revision		Revision as of 09:37, 31 December 2019
Line 4:		Line 4:
	\|Readable=No		\|Readable=No
	\|Writable=Yes		\|Writable=Yes
	~~\|PortMask=%---- ---- ---- ---0~~
	}}		}}
	When written to, adjusts the border color and audio devices as follows:		When written to, adjusts the border color and audio devices as follows:
Line 13:		Line 12:
	\| 0-2 \|\| Border color		\| 0-2 \|\| Border color
	\|-		\|-
	\| 3 \|\| ~~Enable~~ MIC output		\| 3 \|\| MIC output (saving via audio jack)
	\|-		\|-
	\| 4 \|\| ~~Enable~~ EAR output		\| 4 \|\| EAR output (connected to internal speaker)
	\|-		\|-
	\| 5-7 \|\| Unused		\| 5-7 \|\| Unused
	\|}		\|}

	Reading the port with certain particular high bytes will read the keyboard - see {{PortNo\|$**FE}}. Bit 6 of the ULA byte is always the EAR input.		---------

			Reading the port with certain particular high bytes will read the keyboard - see {{PortNo\|$**FE}}. Bit 6 of the ULA byte is always the EAR input (signal from tape audio jack - also input from [https://wiki.specnext.dev/Pi:index Pi] digital audio is now mixed in, since 3.0 cores).

Xalior at 22:59, 19 April 2019

2019-04-19T22:59:53Z

← Older revision		Revision as of 23:59, 19 April 2019
Line 2:		Line 2:
	\|Number=$xxFE		\|Number=$xxFE
	\|ShortDesc=Controls border color and base Spectrum audio settings.		\|ShortDesc=Controls border color and base Spectrum audio settings.
	~~\|PortMask=%---- ---- ---- ---0~~
	\|Readable=No		\|Readable=No
	\|Writable=Yes		\|Writable=Yes
			\|PortMask=%---- ---- ---- ---0
	}}		}}
	When written to, adjusts the border color and audio devices as follows:		When written to, adjusts the border color and audio devices as follows:

Specnext: 4 revisions imported

2019-04-14T10:00:23Z

4 revisions imported

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

wiki>Hyphz at 15:53, 29 August 2017

2017-08-29T15:53:22Z

← Older revision		Revision as of 16:53, 29 August 2017
Line 20:		Line 20:
	\|}		\|}

	Reading the port with certain particular high bytes will read the keyboard (see {{PortNo\|$**FE}}. Bit 6 of the ULA byte is always the EAR input.		Reading the port with certain particular high bytes will read the keyboard - see {{PortNo\|$**FE}}. Bit 6 of the ULA byte is always the EAR input.

wiki>Hyphz at 15:53, 29 August 2017

2017-08-29T15:53:10Z

← Older revision		Revision as of 16:53, 29 August 2017
Line 20:		Line 20:
	\|}		\|}

	Reading the port with certain particular high bytes will read the keyboard (see {{~~PortRef:~~$**FE}}. Bit 6 of the ULA byte is always the EAR input.		Reading the port with certain particular high bytes will read the keyboard (see {{PortNo\|$**FE}}. Bit 6 of the ULA byte is always the EAR input.

wiki>Hyphz at 15:52, 29 August 2017

2017-08-29T15:52:48Z

← Older revision		Revision as of 16:52, 29 August 2017
Line 2:		Line 2:
	\|Number=$xxFE		\|Number=$xxFE
	\|ShortDesc=Controls border color and base Spectrum audio settings.		\|ShortDesc=Controls border color and base Spectrum audio settings.
			\|PortMask=%---- ---- ---- ---0
	\|Readable=No		\|Readable=No
	\|Writable=Yes		\|Writable=Yes
Line 7:		Line 8:
	When written to, adjusts the border color and audio devices as follows:		When written to, adjusts the border color and audio devices as follows:

	{\|		{\| class="wikitable"
	! Bit !! Function		! Bit !! Function
	\|-		\|-
Line 19:		Line 20:
	\|}		\|}

	Reading the port with certain particular high bytes will read the keyboard (see {{~~PortNo~~:$**FE}}. Bit 6 of the ULA byte is always the EAR input.		Reading the port with certain particular high bytes will read the keyboard (see {{PortRef:$**FE}}. Bit 6 of the ULA byte is always the EAR input.

wiki>Hyphz: Created page with "{{Port |Number=$xxFE |ShortDesc=Controls border color and base Spectrum audio settings. |Readable=No |Writable=Yes }} When written to, adjusts the border color and audio devic..."

2017-08-29T15:52:15Z

Created page with "{{Port |Number=$xxFE |ShortDesc=Controls border color and base Spectrum audio settings. |Readable=No |Writable=Yes }} When written to, adjusts the border color and audio devic..."

New page

{{Port
|Number=$xxFE
|ShortDesc=Controls border color and base Spectrum audio settings.
|Readable=No
|Writable=Yes
}}
When written to, adjusts the border color and audio devices as follows:

{|
! Bit !! Function
|-
| 0-2 || Border color
|-
| 3 || Enable MIC output
|-
| 4 || Enable EAR output
|-
| 5-7 || Unused
|}

Reading the port with certain particular high bytes will read the keyboard (see {{PortNo:$**FE}}. Bit 6 of the ULA byte is always the EAR input.