Difference between revisions of "Category:Z80 Routines:Input:DetectKeyPress"

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[[Category:Z80 Routines:Input|DetectKeyPress]]
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wrong page
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[[Category:Z80 Routines|DetectKeyPress]]
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[[Z80_Routines:Input:DetectKeyPress]]
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This routines tells whether any keys at all are pressed.
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Returns the result in z flag.
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<nowiki>
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;out: z flag for no key, nz flag for any key pressed (except On)
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detectkeypress:
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xor a
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out (1),a ; any part of keyboard is detected
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nop
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nop
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in a,(1)
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inc a
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ret
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</nowiki>
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Latest revision as of 06:48, 21 April 2010

wrong page Z80_Routines:Input:DetectKeyPress

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