Keyboard - Revision history

Sol HSA: updated to 78a6ee50

2024-11-03T13:00:33Z

updated to 78a6ee50

← Older revision		Revision as of 14:00, 3 November 2024
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	\|Subsystem=Input		\|Subsystem=Input
	}}		}}
			bit 6 = EAR in from the tape audio jack
			bits 4:0 = key column result from keyboard, active low

			* nextreg 0x08 bit 0 can be set to select issue 2 keyboard which will affect reads of bit 6

	Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.		Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.

2022-10-10T18:20:49Z

← Older revision		Revision as of 19:20, 10 October 2022
Line 35:		Line 35:

	=== Wireless Keyboards ===		=== Wireless Keyboards ===
	Most ps/2 keyboards commonly seen today are wired. Two models of wireless keyboard known to work well with the Next are the '''Microsoft Wireless Elite Keyboard 1011''' and the '''Logitech Cordless Desktop EX110'''.		Most ps/2 keyboards commonly seen today are wired. Two models of wireless keyboard known to work well with the Next are the '''Microsoft Wireless Elite Keyboard 1011''' and the '''Logitech Cordless Desktop Keyboard EX110'''.

2022-10-10T18:19:55Z

Added wireless keyboards

← Older revision		Revision as of 19:19, 10 October 2022
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	[[File:Speckeys.png]]		[[File:Speckeys.png]]

			=== Wireless Keyboards ===
			Most ps/2 keyboards commonly seen today are wired. Two models of wireless keyboard known to work well with the Next are the '''Microsoft Wireless Elite Keyboard 1011''' and the '''Logitech Cordless Desktop EX110'''.

2020-05-03T13:44:11Z

← Older revision		Revision as of 14:44, 3 May 2020
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	{{Port		{{Port
	\|Number=$**FE		\|Number=$**FE
			\|NumberDec=254
			\|PortMask=%xxxx xxxx ---- ---0 where only one bit in x is 0
	\|ShortDesc=Series of specific ports that read keyboard key presses.		\|ShortDesc=Series of specific ports that read keyboard key presses.
	\|Readable=Yes		\|Readable=Yes
	\|Writable=No		\|Writable=No
	\|Subsystem=Input		\|Subsystem=Input
	~~\|PortMask=%xxxx xxxx ---- ---0 where only one bit in x is 0~~
	}}		}}
	Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.		Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.

2019-12-31T08:27:25Z

info about multi-row reading possible

← Older revision		Revision as of 09:27, 31 December 2019
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	}}		}}
	Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.		Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.

			The top eight bits of the port address are active low signals that select one or more key rows for reading.

	{\| class="wikitable"		{\| class="wikitable"
	! Port upper byte !! Keys affected		! Port upper byte !! Keys affected (row of keys)
	\|-		\|-
	\| $7F \|\| B, N, M, Symbol Shift, Space		\| $7F (bit 7) \|\| B, N, M, Symbol Shift, Space
	\|-		\|-
	\| $BF \|\| H, J, K, L, Enter		\| $BF (bit 6) \|\| H, J, K, L, Enter
	\|-		\|-
	\| $DF \|\| Y, U, I, O P		\| $DF (bit 5) \|\| Y, U, I, O P
	\|-		\|-
	\| $EF \|\| 6, 7, 8, 9, 0		\| $EF (bit 4) \|\| 6, 7, 8, 9, 0
	\|-		\|-
	\| $F7 \|\| 5, 4, 3, 2, 1		\| $F7 (bit 3) \|\| 5, 4, 3, 2, 1
	\|-		\|-
	\| $FB \|\| T, R, E, W, Q		\| $FB (bit 2) \|\| T, R, E, W, Q
	\|-		\|-
	\| $FD \|\| G, F, D, S, A		\| $FD (bit 1) \|\| G, F, D, S, A
	\|-		\|-
	\| $FE \|\| V, C, X, Z, Caps Shift		\| $FE (bit 0) \|\| V, C, X, Z, Caps Shift
	\|}		\|}

	[[File:Speckeys.png]]		[[File:Speckeys.png]]

2019-04-14T10:00:15Z

6 revisions imported

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

2019-01-23T09:58:04Z

fixed order of keys in the table

2017-08-29T15:56:09Z

← Older revision		Revision as of 16:56, 29 August 2017
Line 7:		Line 7:
	\|PortMask=%xxxx xxxx ---- ---0 where only one bit in x is 0		\|PortMask=%xxxx xxxx ---- ---0 where only one bit in x is 0
	}}		}}
	Reads keys on the keyboard depending on the upper byte of the port number.		Reads keys on the keyboard depending on the upper byte of the port number. The five keys are represented by bits 0-4 of the read byte, listed below with bit 4 first down to bit 0. A zero means that the key is pressed.

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

2017-08-28T16:48:10Z

← Older revision		Revision as of 17:48, 28 August 2017
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	\|Writable=No		\|Writable=No
	\|Subsystem=Input		\|Subsystem=Input
	\|PortMask=%~~xxxxxxxx~~-------0 where only one bit in x is 0		\|PortMask=%xxxx xxxx ---- ---0 where only one bit in x is 0
	}}		}}
	Reads keys on the keyboard depending on the upper byte of the port number.		Reads keys on the keyboard depending on the upper byte of the port number.

2017-08-28T15:13:39Z

← Older revision		Revision as of 16:13, 28 August 2017
Line 5:		Line 5:
	\|Writable=No		\|Writable=No
	\|Subsystem=Input		\|Subsystem=Input
			\|PortMask=%xxxxxxxx-------0 where only one bit in x is 0
	}}		}}
	Reads keys on the keyboard depending on the upper byte of the port number.		Reads keys on the keyboard depending on the upper byte of the port number.