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|
;--------------------------------------------------------------------------
; cnvint.S - convertion routine of 24 bits integer to ASCII
;
; Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
;
; This library is free software; you can redistribute it and/or modify it
; under the terms of the GNU General Public License as published by the
; Free Software Foundation; either version 2, or (at your option) any
; later version.
;
; This library is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this library; see the file COPYING. If not, write to the
; Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
; MA 02110-1301, USA.
;
; As a special exception, if you link this library with other files,
; some of which are compiled with SDCC, to produce an executable,
; this library does not by itself cause the resulting executable to
; be covered by the GNU General Public License. This exception does
; not however invalidate any other reasons why the executable file
; might be covered by the GNU General Public License.
;--------------------------------------------------------------------------
radix dec
list
nolist
POSTINC0 equ 0xfee
POSTDEC1 equ 0xfe5
PREINC1 equ 0xfe4
STATUS equ 0xfd8
global _convert_int
.registers udata_ovr 0x000
r0x00 res 1
r0x01 res 1
r0x02 res 1
r0x03 res 1
d0x00 res 1
d0x01 res 1
d0x02 res 1
d0x03 res 1
d0x04 res 1
d0x05 res 1
d0x06 res 1
d0x07 res 1
d0x08 res 1
d0x09 res 1
digit_count res 1
S__convert_int code
_convert_int:
movff r0x00, POSTDEC1
movff r0x01, POSTDEC1
movff r0x02, POSTDEC1
movff r0x03, POSTDEC1
movff d0x00, POSTDEC1
movff d0x01, POSTDEC1
movff d0x02, POSTDEC1
movff d0x03, POSTDEC1
movff d0x04, POSTDEC1
movff d0x05, POSTDEC1
movff d0x06, POSTDEC1
movff d0x07, POSTDEC1
movff d0x08, POSTDEC1
movff d0x09, POSTDEC1
movff digit_count, POSTDEC1
; adding digit 0
movlw 0
btfsc r0x00, 0 ; bit 0
addlw 1
btfsc r0x00, 1 ; bit 1
addlw 2
btfsc r0x00, 2 ; bit 2
addlw 4
btfsc r0x00, 3 ; bit 3
addlw 8
btfsc r0x00, 4 ; bit 4
addlw 6
btfsc r0x00, 5 ; bit 5
addlw 2
btfsc r0x00, 6 ; bit 6
addlw 4
btfsc r0x00, 7 ; bit 7
addlw 8
btfsc r0x01, 0 ; bit 8
addlw 6
btfsc r0x01, 1 ; bit 9
addlw 2
btfsc r0x01, 2 ; bit 10
addlw 4
btfsc r0x01, 3 ; bit 11
addlw 8
btfsc r0x01, 4 ; bit 12
addlw 6
btfsc r0x01, 5 ; bit 13
addlw 2
btfsc r0x01, 6 ; bit 14
addlw 4
btfsc r0x01, 7 ; bit 15
addlw 8
btfsc r0x02, 0 ; bit 16
addlw 6
btfsc r0x02, 1 ; bit 17
addlw 2
btfsc r0x02, 2 ; bit 18
addlw 4
btfsc r0x02, 3 ; bit 19
addlw 8
btfsc r0x02, 4 ; bit 20
addlw 6
btfsc r0x02, 5 ; bit 21
addlw 2
btfsc r0x02, 6 ; bit 22
addlw 4
btfsc r0x02, 7 ; bit 23
addlw 8
clrf d0x01
@1:
addlw -10
bnc @2
incf d0x01, f
bra @1
@2:
addlw 10
movwf d0x00
; adding digit 1
movf d0x01, w
btfsc r0x00, 4 ; bit 4
addlw 1
btfsc r0x00, 5 ; bit 5
addlw 3
btfsc r0x00, 6 ; bit 6
addlw 6
btfsc r0x00, 7 ; bit 7
addlw 2
btfsc r0x01, 0 ; bit 8
addlw 5
btfsc r0x01, 1 ; bit 9
addlw 1
btfsc r0x01, 2 ; bit 10
addlw 2
btfsc r0x01, 3 ; bit 11
addlw 4
btfsc r0x01, 4 ; bit 12
addlw 9
btfsc r0x01, 5 ; bit 13
addlw 9
btfsc r0x01, 6 ; bit 14
addlw 8
btfsc r0x01, 7 ; bit 15
addlw 6
btfsc r0x02, 0 ; bit 16
addlw 3
btfsc r0x02, 1 ; bit 17
addlw 7
btfsc r0x02, 2 ; bit 18
addlw 4
btfsc r0x02, 3 ; bit 19
addlw 8
btfsc r0x02, 4 ; bit 20
addlw 7
btfsc r0x02, 5 ; bit 21
addlw 5
clrf d0x02
@3:
addlw -10
bnc @4
incf d0x02, f
bra @3
@4:
addlw 10
movwf d0x01
; adding digit 2
movf d0x02, w
btfsc r0x00, 7 ; bit 7
addlw 1
btfsc r0x01, 0 ; bit 8
addlw 2
btfsc r0x01, 1 ; bit 9
addlw 5
btfsc r0x01, 5 ; bit 13
addlw 1
btfsc r0x01, 6 ; bit 14
addlw 3
btfsc r0x01, 7 ; bit 15
addlw 7
btfsc r0x02, 0 ; bit 16
addlw 5
btfsc r0x02, 2 ; bit 18
addlw 1
btfsc r0x02, 3 ; bit 19
addlw 2
btfsc r0x02, 4 ; bit 20
addlw 5
btfsc r0x02, 5 ; bit 21
addlw 1
btfsc r0x02, 6 ; bit 22
addlw 3
btfsc r0x02, 7 ; bit 23
addlw 6
clrf d0x03
@5:
addlw -10
bnc @6
incf d0x03, f
bra @5
@6:
addlw 10
movwf d0x02
; adding digit 3
movf d0x03, w
btfsc r0x01, 2 ; bit 10
addlw 1
btfsc r0x01, 3 ; bit 11
addlw 2
btfsc r0x01, 4 ; bit 12
addlw 4
btfsc r0x01, 5 ; bit 13
addlw 8
btfsc r0x01, 6 ; bit 14
addlw 6
btfsc r0x01, 7 ; bit 15
addlw 2
btfsc r0x02, 0 ; bit 16
addlw 5
btfsc r0x02, 1 ; bit 17
addlw 1
btfsc r0x02, 2 ; bit 18
addlw 2
btfsc r0x02, 3 ; bit 19
addlw 4
btfsc r0x02, 4 ; bit 20
addlw 8
btfsc r0x02, 5 ; bit 21
addlw 7
btfsc r0x02, 6 ; bit 22
addlw 4
btfsc r0x02, 7 ; bit 23
addlw 8
clrf d0x04
@7:
addlw -10
bnc @8
incf d0x04, f
bra @7
@8:
addlw 10
movwf d0x03
; adding digit 4
movf d0x04, w
btfsc r0x01, 6 ; bit 14
addlw 1
btfsc r0x01, 7 ; bit 15
addlw 3
btfsc r0x02, 0 ; bit 16
addlw 6
btfsc r0x02, 1 ; bit 17
addlw 3
btfsc r0x02, 2 ; bit 18
addlw 6
btfsc r0x02, 3 ; bit 19
addlw 2
btfsc r0x02, 4 ; bit 20
addlw 4
btfsc r0x02, 5 ; bit 21
addlw 9
btfsc r0x02, 6 ; bit 22
addlw 9
btfsc r0x02, 7 ; bit 23
addlw 8
clrf d0x05
@9:
addlw -10
bnc @10
incf d0x05, f
bra @9
@10:
addlw 10
movwf d0x04
; adding digit 5
movf d0x05, w
btfsc r0x02, 1 ; bit 17
addlw 1
btfsc r0x02, 2 ; bit 18
addlw 2
btfsc r0x02, 3 ; bit 19
addlw 5
btfsc r0x02, 6 ; bit 22
addlw 1
btfsc r0x02, 7 ; bit 23
addlw 3
clrf d0x06
@11:
addlw -10
bnc @12
incf d0x06, f
bra @11
@12:
addlw 10
movwf d0x05
; adding digit 6
movf d0x06, w
btfsc r0x02, 4 ; bit 20
addlw 1
btfsc r0x02, 5 ; bit 21
addlw 2
btfsc r0x02, 6 ; bit 22
addlw 4
btfsc r0x02, 7 ; bit 23
addlw 8
clrf d0x07
@13:
addlw -10
bnc @14
incf d0x07, f
bra @13
@14:
addlw 10
movwf d0x06
; adding digit 7
movf d0x07, w
clrf digit_count
; finalization
bnz @15
movf d0x06, w
bnz @16
movf d0x05, w
bnz @17
movf d0x04, w
bnz @18
movf d0x03, w
bnz @19
movf d0x02, w
bnz @20
movf d0x01, w
bnz @21
movf d0x00, w
bra @22
@15:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x06, w
@16:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x05, w
@17:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x04, w
@18:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x03, w
@19:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x02, w
@20:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x01, w
@21:
incf digit_count, f
addlw 48
movwf POSTINC0
movf d0x00, w
@22:
incf digit_count, f
addlw 48
movwf POSTINC0
movf digit_count, w
movff PREINC1, digit_count
movff PREINC1, d0x09
movff PREINC1, d0x08
movff PREINC1, d0x07
movff PREINC1, d0x06
movff PREINC1, d0x05
movff PREINC1, d0x04
movff PREINC1, d0x03
movff PREINC1, d0x02
movff PREINC1, d0x01
movff PREINC1, d0x00
movff PREINC1, r0x03
movff PREINC1, r0x02
movff PREINC1, r0x01
movff PREINC1, r0x00
return
end
; Converstion table
;
;00 000000000000000000000001 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
;01 000000000000000000000002 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
;02 000000000000000000000004 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
;03 000000000000000000000008 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
;04 000000000000000000000016 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6
;05 000000000000000000000032 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2
;06 000000000000000000000064 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 4
;07 000000000000000000000128 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 8
;08 000000000000000000000256 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 5 6
;09 000000000000000000000512 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 1 2
;10 000000000000000000001024 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 4
;11 000000000000000000002048 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 4 8
;12 000000000000000000004096 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 9 6
;13 000000000000000000008192 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 1 9 2
;14 000000000000000000016384 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6 3 8 4
;15 000000000000000000032768 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 7 6 8
;16 000000000000000000065536 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 5 5 3 6
;17 000000000000000000131072 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 1 0 7 2
;18 000000000000000000262144 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 6 2 1 4 4
;19 000000000000000000524288 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 2 4 2 8 8
;20 000000000000000001048576 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 4 8 5 7 6
;21 000000000000000002097152 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 9 7 1 5 2
;22 000000000000000004194304 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 9 4 3 0 4
;23 000000000000000008388608 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 3 8 8 6 0 8
|
