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annotate lib/alib/inkey.a @ 2765:0bd16cca86b7

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Updated rules.mak for all the os9 format's to format the entire disk. People were having some issues with the disk images not being formatted to their full capacity and preventing some functions from working.
author drencor-xeen
date Thu, 17 Jan 2013 11:03:26 -0600
parents 7d70b7e1cb21
children aaba193af04f
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1 ***************************************
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2
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3 * Subroutine to input one character from std in. if ready
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4 * like an INKEY$...
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5
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6 * OTHER MODULES NEEDED: FGETC
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7
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8 * ENTRY: none
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11 * EXIT: A character, 0=no char
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12 * CC carry set if error (from I$Read)
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13 * B error code if any
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15 nam Inkey
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16 ttl Assembler Library Module
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19 psect INKEY,0,0,0,0,0
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21 INKEY:
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22 clra std in
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23 ldb #SS.Ready
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24 os9 I$GetStt see if key ready
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25 bcc getit
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26 cmpb #E$NotRdy no keys ready=no error
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27 bne exit other error, report it
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28 clra no error
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29 bra exit
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30
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31 getit
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32 lbsr FGETC go get the key
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34 * this inst. needed since ctrl/: sometimes returns a null
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35 * usually callers are not expecting a null....
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36
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37 tsta
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39 exit
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40 rts
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42 endsect
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