How to access the PSG via PPI - Revision history

Ankostis: /* Reading to the selected PSG register */ section title was missing (format)

2021-02-10T23:48:59Z

Reading to the selected PSG register: section title was missing (format)

← Older revision		Revision as of 23:48, 10 February 2021
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	The data will then be written into the register.		The data will then be written into the register.

	Reading from the selected PSG register		=== Reading from the selected PSG register ===

	To read data from the PSG, PPI Port A must be operating as input. (See the document on the 8255 to see how to do this)		To read data from the PSG, PPI Port A must be operating as input. (See the document on the 8255 to see how to do this)
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	set bit 7 to "0" and bit 6 to "1" of PPI Port C		set bit 7 to "0" and bit 6 to "1" of PPI Port C
	read data from PPI Port A,		read data from PPI Port A,
	The register data is available at PPI Port A.		The register data is available at PPI Port A.

	=== Notes ===		=== Notes ===

2010-12-19T19:24:38Z

← Older revision		Revision as of 19:24, 19 December 2010
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	[[Category:Stub]]		[[Category:Stub]]
	[[Category:~~Hardware~~]]		[[Category:Programming]]
	[[Category:Music and sound\| ]]		[[Category:Music and sound\| ]]
	[[Category:Video contents]][[Category:CPC Internal Components]]		[[Category:Video contents]][[Category:CPC Internal Components]]

2010-03-30T21:37:47Z

← Older revision		Revision as of 21:37, 30 March 2010
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	~~PSG Stands for '''Programmable Sound Generator'''~~		The [[Amstrad CPC]], CPC+ and [[KC Compact]] use a AY-3-8912 Programmable sound generator (referred to as [[PSG]] in this document), operating at 1Mhz. This document will describe it's role in these systems. To understand the full functions please read the [[Datasheet AY-8913\|datasheet]].

	The [[Amstrad CPC]], CPC+ and [[KC Compact]] use a AY-3-8912 Programmable sound generator (referred to as PSG in this document), operating at 1Mhz. This document will describe it's role in these systems. To understand the full functions please read the [[Datasheet AY-8913\|datasheet]].

	== Role of the AY-3-8912 ==		== Role of the AY-3-8912 ==

2010-03-30T21:29:40Z

← Older revision	Revision as of 21:29, 30 March 2010
(No difference)

2010-02-09T09:06:33Z

← Older revision		Revision as of 09:06, 9 February 2010
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	[[Category:Stub]]		[[Category:Stub]]
	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:Music and sound]]		[[Category:Music and sound\| ]]
	[[Category:Video contents]][[Category:CPC Internal Components]]		[[Category:Video contents]][[Category:CPC Internal Components]]

2010-01-27T21:33:06Z

← Older revision		Revision as of 21:33, 27 January 2010
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	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:Music and sound]]		[[Category:Music and sound]]
	[[Category:Video contents]][[Category:~~Built in Hardware~~]]		[[Category:Video contents]][[Category:CPC Internal Components]]

2010-01-27T13:59:30Z

← Older revision		Revision as of 13:59, 27 January 2010
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	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:Music and sound]]		[[Category:Music and sound]]
	[[Category:Video contents]]		[[Category:Video contents]][[Category:Built in Hardware]]

2010-01-26T13:19:13Z

Role of the AY-3-8912

← Older revision		Revision as of 13:19, 26 January 2010
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	The PSG function, defined by the BC1,BC2 and BDIR signals, is controlled by bit 7 and bit 6 of PPI Port C.		The PSG function, defined by the BC1,BC2 and BDIR signals, is controlled by bit 7 and bit 6 of PPI Port C.

	~~=== PSG signals ===~~

	=== PSG function selection ===		=== PSG function selection ===

2010-01-26T13:18:52Z

Role of the AY-3-8912

← Older revision		Revision as of 13:18, 26 January 2010
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	=== PSG signals ===		=== PSG signals ===

	~~{\|{{Prettytable\|width: 700px; font-size: 2em;}}~~
	~~\|''PPI Port C Bit''\|\|''PSG Signal''~~
	\|-
	~~\|7\|\|BDIR~~
	\|-
	~~\|6\|\|BC1~~
	\|-
	\|}

	=== PSG function selection ===		=== PSG function selection ===

	{\|{{Prettytable\|width: 700px; font-size: 2em;}}		{\|{{Prettytable\|width: 700px; font-size: 2em;}}
	\|colspan=2\|''PPI Port C ~~Bit~~''\|\|rowspan=2\|''PSG Function''		\|colspan=2\|''PPI Port C Bits''\|\|rowspan=2\|''PSG Function''
	\|-		\|-
	\|7\|\|6		\|Bit7 BDIR\|\|Bit6 BC1
	\|-		\|-
	\|0\|\|0\|\|Inactive		\|0\|\|0\|\|Inactive

2009-09-23T16:49:59Z

Links: - added link to the datasheet