6502.org

Posted: **Wed Apr 20, 2016 6:14 pm**

I thought I would mess around with compiling my own version of MS BASIC going off of this page:

http://www.pagetable.com/?p=46

When I try to compile (Windows 10), I get these errors:

Code: Select all

> c:\tmp\cc65\bin\ca65.exe -D microtan msbasic.s -o c:\tmp\microtan.o

memory.s(139): Error: Range error (-9 not in [0..255])
inline.s(118): Error: Unexpected trailing garbage characters
inline.s(133): Error: Unexpected trailing garbage characters
poke.s(118): Error: Unexpected trailing garbage characters
float.s(777): Error: Range error (-4 not in [0..255])
float.s(1451): Error: Range error (-9 not in [0..255])
init.s(85): Error: Unexpected trailing garbage characters
init.s(443): Error: Unexpected trailing garbage characters

Apparently, I'm not the only one according to an Ubuntu user.

I'm more familiar with KickAssembler and never really worked with CC65.

Any suggestions on what I need to do? I haven't altered anything.

Thanks

Posted: **Wed Apr 20, 2016 7:07 pm**

cbmeeks wrote:

I thought I would mess around with compiling my own version of MS BASIC going off of this page:

http://www.pagetable.com/?p=46

When I try to compile (Windows 10), I get these errors:

Code: Select all

> c:\tmp\cc65\bin\ca65.exe -D microtan msbasic.s -o c:\tmp\microtan.o

memory.s(139): Error: Range error (-9 not in [0..255])
inline.s(118): Error: Unexpected trailing garbage characters
inline.s(133): Error: Unexpected trailing garbage characters
poke.s(118): Error: Unexpected trailing garbage characters
float.s(777): Error: Range error (-4 not in [0..255])
float.s(1451): Error: Range error (-9 not in [0..255])
init.s(85): Error: Unexpected trailing garbage characters
init.s(443): Error: Unexpected trailing garbage characters

Apparently, I'm not the only one according to an Ubuntu user.

I'm more familiar with KickAssembler and never really worked with CC65.

Any suggestions on what I need to do? I haven't altered anything.

Thanks

Maybe microtan needs to be in uppercase?

Also, the instructions indicate that there is more involved than just running ca65 on the file msbasic.s:

Quote:

First duplicate one of the cfg files, and add it to make.sh. cbmbasic2 is a good start, as you can quite easily test the resulting images in the VICE emulator – CC65 can even provide symbol information for the VICE debugger. Add a case in defines.s to define one of CBM1, CBM2, APPLE etc., because you need one flavour of platform specific code, and include your own defines_*.s. For Commodore BASIC, you also need to define CONFIG_CBM_ALL.

Posted: **Wed Apr 20, 2016 7:11 pm**

Those instructions, from what I can tell, are for creating your own version.

They also say to run the make.sh script. Since I'm on Windows, I just translated one of the commands and arbitrarily picked microtan. I also tried cbmbasic1.

I tried it in uppercase but it made no difference.

make.sh:

Code: Select all

if [ ! -d tmp ]; then
	mkdir tmp
fi

for i in cbmbasic1 cbmbasic2 kbdbasic osi kb9 applesoft microtan; do

echo $i
ca65 -D $i msbasic.s -o tmp/$i.o &&
ld65 -C $i.cfg tmp/$i.o -o tmp/$i.bin -Ln tmp/$i.lbl

done

** EDIT **

One easy fix is that it doesn't like the C style comments "/*...*/". So changing them to ";" removes those errors.

** EDIT 2 **

ca65 is clearly failing on assembling negative numbers. One of the examples is:

Code: Select all

        lda     #-9

I would have no idea what to put there instead. I'm not sure what the original intent was.

My assumption is that I could translate that to binary instead (%1111_0111) but not sure what to do on this one:

Code: Select all

        ldx     #TEMP1-FAC+1

It's evaluating to -9 as well.

Posted: **Wed Apr 20, 2016 8:26 pm**

Just adding 256 should sort out these negative numbers. The original code will have expected them to wrap within a byte-sized value.
Example: -1 is intended to be $ff. 256-1 or -1+256 is 255, which is $ff.

Posted: **Wed Apr 20, 2016 8:28 pm**

Duh.

That seemed to do the trick.

I changed one to

Code: Select all

        ldx     #-MANTISSA_BYTES + 256

and it worked.

Thanks!

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