cc65/libsrc/runtime/asrax4.s

;
; Piotr Fusik, 24.10.2003
; originally by Ullrich von Bassewitz
;
; CC65 runtime: Scale the primary register by 16
;

        .export         asrax4
        .importzp       tmp1

asrax4: stx     tmp1
        cpx     #$80            ; Put bit 7 into carry
        ror     tmp1
        ror     a
        cpx     #$80
        ror     tmp1
        ror     a
        cpx     #$80
        ror     tmp1
        ror     a
        cpx     #$80
        ror     tmp1
        ror     a
        ldx     tmp1
        rts
More shift routines git-svn-id: svn://svn.cc65.org/cc65/trunk@820 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-07-25 21:36:01 +00:00			`;`
Runtime function improvements by Piotr Fusik git-svn-id: svn://svn.cc65.org/cc65/trunk@2577 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-10-28 08:47:47 +00:00			`; Piotr Fusik, 24.10.2003`
			`; originally by Ullrich von Bassewitz`
More shift routines git-svn-id: svn://svn.cc65.org/cc65/trunk@820 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-07-25 21:36:01 +00:00			`;`
			`; CC65 runtime: Scale the primary register by 16`
			`;`

Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:56:54 +02:00			`.export asrax4`
			`.importzp tmp1`
More shift routines git-svn-id: svn://svn.cc65.org/cc65/trunk@820 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-07-25 21:36:01 +00:00
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:56:54 +02:00			`asrax4: stx tmp1`
			`cpx #$80 ; Put bit 7 into carry`
			`ror tmp1`
			`ror a`
			`cpx #$80`
			`ror tmp1`
			`ror a`
			`cpx #$80`
			`ror tmp1`
			`ror a`
			`cpx #$80`
			`ror tmp1`
			`ror a`
			`ldx tmp1`
			`rts`
More shift routines git-svn-id: svn://svn.cc65.org/cc65/trunk@820 b7a2c559-68d2-44c3-8de9-860c34a00d81 2001-07-25 21:36:01 +00:00