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Hi,
Apologies in advance for the newbie question. Have just written an =
assembler for an old MCU (Mitsubi**** M50734) which is based on the 6502 =
instruction set. It outputs an object file without any problems and I'm =
just starting to write the code to generate the listing output file, but =
am a bit stuck. Could anyone point me in the right direction as to the =
format of a listing file that is ready to download into an EPROM please =
? From what I've ready it looks like the object code with some sort of =
checksum after so many bytes.=20
Any pointers gratefully received.
As an example, my object files resemble the following :
* M50745 ASSEMBLER V.1.0.A * P. 001
E SEQ. LOC. OBJ.. ....*....1....*....2....*....SOURCE =
STATEMENT....5....*.
1 ;
2 .PAGE
3 =
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
4 ;;;;;;;;;;; SERIAL OUTPUT =
;;;;;;;;;;;;;;;;;;;;
5 =
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
6 ;
7 P2P3FR =3D $ED=20
8 P3D =3D $EF
9 SIOR =3D $E8
10 ;
11 *=3D $E080
12 ;
13 TSO:
14 E080 2FED SEB 1,P2P3FR ; SCLK,SIO MODE
15 E082 2FEF SEB 1,P3D ; SCLK OUT MODE
16 E084 4FEF SEB 2,P3D ; So MODE
17 ;
18 E086 A955 LDA #$55
19 E088 85E8 STA SIOR
20 ;
21 E08A EA NOP ; OUTPUT START
22 E08B EA NOP ; DELAY FOR SIOR EMPTY
23 ;
24 E08C A9AA LDA #$AA
25 E08E 85E8 STA SIOR
26 ;
27 E090 EA NOP
28 E091 EA NOP
29 ;
30 E092 3FED CLB 1,P2P3FR
31 ;
32 E094 60 RTS
33 ;
34 ;
ERROR COUNT 0000
TOTAL LINE 0034 LINES
COMMENT LINE 0015 LINES
OBJECT SIZE 0021 BYTES
Thanks,
Tim.
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<BODY>
<DIV><FONT face=3DCalibri>Hi,</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>Apologies in advance for the newbie question. =
Have just=20
written an assembler for an old MCU (Mitsubi**** M50734) which =
is based on=20
the 6502 instruction set. It outputs an object file without any =
problems=20
and I'm just starting to write the code to generate the listing =
output=20
file, but am a bit stuck. Could anyone point me in the right direction =
as to the=20
format of a listing file that is ready to download into an EPROM please =
? From=20
what I've ready it looks like the object code with some sort of checksum =
after=20
so many bytes. </FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>Any pointers gratefully received.</FONT></DIV>
<DIV><FONT face=3DCalibri></FONT> </DIV>
<DIV><FONT face=3DCalibri>As an example, my object files =
resemble the=20
following :<BR></FONT></DIV>
<DIV><FONT face=3D"Courier New" size=3D1>* M50745 ASSEMBLER V.1.0.A=20
* =
&=
nbsp; =20
P. 001</FONT></DIV>
<DIV><FONT face=3D"Courier New" size=3D1></FONT> </DIV>
<DIV><FONT face=3D"Courier New" size=3D1>E SEQ. LOC. =20
OBJ.. ....*....1....*....2....*....SOURCE=20
STATEMENT....5....*.<BR> 1 =
=20
=20
;<BR> 2 =20
=20
.PAGE<BR> 3 =
=20
=20
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;<BR> &nb=
sp; =20
4 =
=20
;;;;;;;;;;; SERIAL=20
OUTPUT =20
;;;;;;;;;;;;;;;;;;;;<BR> 5 =
=20
=20
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;<BR> &nb=
sp; =20
6 =
=20
;<BR> 7 =
=20
P2P3FR =20
=3D $ED <BR> 8 =
=20
=20
P3D =3D $EF<BR> =
=20
9 =
=20
SIOR =
=3D $E8<BR> =20
10 =
=20
;<BR> 11 =
=20
=
=20
*=3D $E080<BR> 12 =20
=20
;<BR> 13 =20
TSO:<BR> =
14 =20
E080 2FED =
=20
SEB 1,P2P3FR ; SCLK,SIO=20
MODE<BR> 15 E082 2FEF=20
=20
SEB 1,P3D ; SCLK OUT=20
MODE<BR> 16 E084 4FEF=20
=20
SEB 2,P3D ; So=20
MODE<BR> 17 =
=20
;<BR> =
18 =20
E086 A955 =
=20
LDA #$55<BR> 19 E088 85E8=20
=20
STA SIOR<BR> 20 =20
=20
;<BR> 21 E08A=20
EA  =
; =20
NOP &nbs=
p; ;=20
OUTPUT START<BR> 22 E08B EA=20
=
=20
NOP &nbs=
p; ;=20
DELAY FOR SIOR EMPTY<BR> 23 =
=20
=20
;<BR> 24 E08C A9AA =
=20
LDA =
#$AA<BR> =20
25 E08E 85E8 =20
STA SIOR<BR> =20
26  =
; ;<BR> =20
27 E090=20
EA  =
; NOP<BR> =20
28 E091 EA =20
NOP<BR> =20
29  =
; ;<BR> =20
30 E092 3FED =20
CLB 1,P2P3FR<BR> =
31 =20
=20
;<BR> 32 E094 60=20
RTS<BR> 33 =20
=20
;<BR> 34 =20
;</FONT></DIV>
<DIV><FONT face=3D"Courier New" size=3D1></FONT> </DIV>
<DIV><FONT face=3D"Courier New" size=3D1>ERROR COUNT 0000<BR>TOTAL =
LINE 0034 LINES<BR>COMMENT LINE 0015 LINES<BR>OBJECT =
SIZE 0021=20
BYTES</FONT></DIV>
<DIV><FONT face=3D"Courier New" size=3D1></FONT> </DIV>
<DIV><FONT face=3DCalibri>Thanks,</FONT></DIV>
<DIV><FONT face=3DCalibri>Tim.</FONT></DIV></BODY></HTML>
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