cc65/libsrc/cbm510/kbhit.s

;
; Ullrich von Bassewitz, 06.08.1998
;
; unsigned char kbhit (void);
;

	.export		_kbhit
        .import         keyidx: zp


.proc   _kbhit

        ldx     #0              ; High byte of return is always zero
       	lda    	keyidx          ; Get number of characters
        beq     L9
        lda     #1
L9:     rts

.endproc
Started to add support for the P500 aka CBM510 git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-09-13 21:09:19 +00:00			`;`
			`; Ullrich von Bassewitz, 06.08.1998`
			`;`
Squeezed bytes and cycles out of the kbhit functions for almost all platforms. git-svn-id: svn://svn.cc65.org/cc65/trunk@4480 b7a2c559-68d2-44c3-8de9-860c34a00d81 2009-11-24 18:31:16 +00:00			`; unsigned char kbhit (void);`
Started to add support for the P500 aka CBM510 git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-09-13 21:09:19 +00:00			`;`

			`.export _kbhit`
More cbm510 changes to make file I/O and kernal access work git-svn-id: svn://svn.cc65.org/cc65/trunk@2846 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-12-27 16:11:14 +00:00			`.import keyidx: zp`
Started to add support for the P500 aka CBM510 git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-09-13 21:09:19 +00:00

Squeezed bytes and cycles out of the kbhit functions for almost all platforms. git-svn-id: svn://svn.cc65.org/cc65/trunk@4480 b7a2c559-68d2-44c3-8de9-860c34a00d81 2009-11-24 18:31:16 +00:00			`.proc _kbhit`

			`ldx #0 ; High byte of return is always zero`
			`lda keyidx ; Get number of characters`
			`beq L9`
			`lda #1`
			`L9: rts`
Started to add support for the P500 aka CBM510 git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-09-13 21:09:19 +00:00
Squeezed bytes and cycles out of the kbhit functions for almost all platforms. git-svn-id: svn://svn.cc65.org/cc65/trunk@4480 b7a2c559-68d2-44c3-8de9-860c34a00d81 2009-11-24 18:31:16 +00:00			`.endproc`
Started to add support for the P500 aka CBM510 git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-09-13 21:09:19 +00:00