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

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
line wrap: on
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***************************************

* Subroutine to input one character from std in. if ready
* like an INKEY$...

* OTHER MODULES NEEDED: FGETC

* ENTRY: none


* EXIT:  A  character, 0=no char 
*        CC carry set if error (from I$Read)
*        B  error code if any

 nam Inkey
 ttl Assembler Library Module


 psect INKEY,0,0,0,0,0

INKEY:
 clra std in
 ldb #SS.Ready 
 os9 I$GetStt see if key ready
 bcc getit
 cmpb #E$NotRdy no keys ready=no error
 bne exit other error, report it
 clra no error
 bra exit

getit
 lbsr FGETC go get the key

* this inst. needed since ctrl/: sometimes returns a null
* usually callers are not expecting a null.... 

 tsta

exit
 rts

 endsect