Date: Wed, 05 Feb 1997 15:44:12 -0800
To: Richard Hughey <rph@cse.ucsc.edu>
From: Duane Strong <dstrong@cats.ucsc.edu>
Subject: Re: assembling HC11 code
X-Attachments: C:\UCSC\cmpe121\c\DS\example.s;
  C:\UCSC\cmpe121\c\DS\Vector.s; C:\UCSC\cmpe121\c\DS\a.bat;

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At 11:14 AM 2/5/97 -0800, you wrote:
>Posting it (or emailing it to me to add to the www page) would be
>great!! 

Adding to the web page would be best since people would have to cut the code
out of a posting. So here they are (attached). The vector table Vector.s has
to be re-assembled anytime it is changed (it only has a reset vector right
now) using:

X6811 vector.s

Otherwise a person would just say:
a myfile 
to assemble link and create a hex file from myfile.s


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;an example assemble program 

   .public __stext, __return  ;defined in vector.s

 	.psect	_text

   ;this is where your code starts on reset
__stext:       

   ;here is some code
   ldaa #7Fh
   staa 4000h
   jmp  __stext

   ;this is a stub routine for all unused vectors in vector.s
__return:
   rts

   .end
 

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;
; this is a default interrupt vector table for the M68HC11.  You should
; modify this as necessary for your application.  Make sure that the
; label for your ISR is prepended by an underscore (_) if the ISR is
; written in C.  Also make sure that you have included the label in a
; .external statement (see below).
;
	.external __return,__stext
;
; __return and __stext are both defined in the C runtime startup file
;
	.psect	_text
	.word	__return	; SCI
	.word	__return	; SPI
	.word	__return	; PA input
	.word	__return	; PA overflow
	.word	__return	; timer overflow
	.word	__return	; TOC5
	.word	__return	; TOC4
	.word	__return	; TOC3
	.word	__return	; TOC2
	.word	__return	; TOC1
	.word	__return	; TIC3
	.word	__return	; TIC2
	.word	__return	; TIC1
	.word	__return	; RTI
	.word	__return	; IRQ
	.word	__return	; XIRQ
	.word	__return	; SWI
	.word	__return	; Illegal opcode
	.word	__return	; COP fail
	.word	__return	; COP clock fail
	.word	__stext		; RESET
	.end

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echo off
rem - batch file for assembling/linking/hexing hc11 code
rem - change these to match your system
set ROM=0x8000
set RAM=0x2000

rem - check that the file name was supplied without extension
if exist %1     goto NOEXT

rem - assemble the file %1.s -> %1.o
x6811 -l %1.s
if errorlevel 1 goto ERRORS

rem - link it (and vector table too) -> %1.h11
lnkh11 +h -o %1.h11 +text -b %ROM% +data -b %RAM% %1.o +text -b 0xFFD6 vector.o
if errorlevel 1 goto ERRORS

rem - generate Motorola S-record hex format file for PROM burner -> %1.hex
hexh11 -s -o %1.hex %1.h11
if errorlevel 1 goto ERRORS

goto END

:NOEXT
echo Do not include the .s file extension please
goto END

:ERRORS
echo There were errors. Insert another quarter to continue...
goto end

:END
set ROM=
set RAM=

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