Linux Commodore 64

linux_commodore_64.md

Use cc65 just like for NES https://gist.github.com/lucasw/53ece8eed3b99beb6215b42cc686d1a7

Emulator

vice emulator- not in ubuntu repo, need to build from source- on sourceforge:

Need some old autoconf tools (and xa65 cross assembler) to build it:

sudo apt-get install autoconf byacc flex libreadline-dev libxaw7-dev texinfo xa65

(If no libreadline-dev will get configure: error: The Xaw port needs Readline error out of configure.

svn checkout https://svn.code.sf.net/p/vice-emu/code/trunk vice-emu-code
cd vice-emu-code/vice
./autogen.sh   # can only run in-source
./configure --prefix=$HOME/other/install
make
make install

USB Joystick support

This reports no usb joystick support:

INPUT
-----
Joystick support            : yes
Mouse support               : yes
Lightpen support            : yes
Linux style joystick support: yes
BSD style joystick support  : no 
Digital joystick support    : no 
USB joystick support        : no 

In configure.ac I see

  AC_CHECK_HEADER(libusb.h,
                      [AC_DEFINE(HAVE_LIBUSB_H,1,
                        [Define to 1 if you have the <libusb.h> header file.])
                      usb_header=yes])
      if test x"$usb_header" = "xyes" ; then
        AC_DEFINE(HAS_USB_JOYSTICK,,[Enable emulation for USB joysticks.])
        JOY_LIBS="-lusb"
        HAS_USB_JOYSTICK_SUPPORT="yes"

But it isn't getting triggered. I do have libusb.h in /usr/include/libusb-1.0/libusb.h, libusbhid.h or usbhid.h aren't available.

http://retrocomputing.stackexchange.com/questions/2606/usb-joystick-support-building-vice-from-source

Ignoring that for now and continuing on:

Build packages missing

make
...
/bin/bash: xa: command not found
Makefile:1268: recipe for target 'psiddrv.h' failed
make[3]: *** [psiddrv.h] Error 127
Makefile:2103: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
Makefile:1862: recipe for target 'all' failed
make[1]: *** [all] Error 2
Makefile:606: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1

sudo apt-get install xa65

make
...
Making all in c64
Warning: zero segment ($0004) start address doesn't align to 256!
Making all in cart
...

/home/lucasw/other/vice-emu-code/vice/missing: line 81: makeinfo: command not found
WARNING: 'makeinfo' is missing on your system.
         You should only need it if you modified a '.texi' file, or
         any other file indirectly affecting the aspect of the manual.
         You might want to install the Texinfo package:
         <http://www.gnu.org/software/texinfo/>
         The spurious makeinfo call might also be the consequence of
         using a buggy 'make' (AIX, DU, IRIX), in which case you might
         want to install GNU make:
         <http://www.gnu.org/software/make/>

sudo apt-get install texinfo

Out of source build

cd ..
mkdir build_vice
cd build_vice
../vice/configure --prefix=$HOME/other/install
make
...
Making all in c64

Run cc65 examples

cd cc65/samples
make
x64

left click smart-attach disk/tape...

Select plasma (no file extension). Then the emulator should have keyboard focus, type 'run'- it will appear all capitals but don't hold down shift.

ca65 assembly for the c64

https://www.reddit.com/r/c64/comments/5zcaa3/learning_c64_assembler_with_vice_on_ubuntu_where/?st=jdd7t22z&sh=2f0c2f71#bottom-comments

This is meant for ACME, does it work in ca65?

* = $801
; this is a sample BASIC program required to start our code
!byte $0c,$08,$0a,$00
!byte $9e ; sys
!text "2068 :-)"
!byte $00,$00,$00,$00

*=$0814

; our code starts here
lda #$00
sta $d020
sta $d021
rts

export PATH=$PATH:~/other/cc65/bin
ca65 -t c64 test.s

It doesn't like the ! lines

http://www.lemon64.com/forum/viewtopic.php?t=54221&sid=3393e1629d9a21e54c9adb8564d79b6f

.byte $01,$08
.org $0801
   .byte $0c,$08,$d0,$07,$9e,$20,$32,$30,$36,$34,$00,$00,$00,$00,$00   ; Basic "SYS 2064"

; our code starts here
lda #$00
sta $d020
sta $d021
rts

cl65 -O -t c64 -o test2 test2.s
ld65: Warning: /home/lucasw/other/cc65/cfg/c64.cfg(45): Segment `STARTUP' does not exist
ld65: Warning: /home/lucasw/other/cc65/cfg/c64.cfg(45): Segment `INIT' does not exist
ld65: Warning: /home/lucasw/other/cc65/cfg/c64.cfg(45): Segment `ONCE' does not exist
ld65: Error: /home/lucasw/other/cc65/cfg/c64.cfg(15): Start address of memory area `BSS' is not constant

ACME

svn checkout https://svn.code.sf.net/p/acme-crossass/code-0/trunk acme-crossass-code-0
cd acme-crossass-code-0/src
make
cp acme ~/other/install/bin/

acme 
ACME - the ACME Crossassembler for Multiple Environments
  Copyright (C) 1998-2017 Marco Baye
This is ACME, release 0.96.4 ("Fenchurch"), 22 Dec 2017
  Platform independent version.
ACME comes with ABSOLUTELY NO WARRANTY; for details read the help file.
  This is free software, and you are welcome to redistribute it under
  certain conditions; as outlined in the GNU General Public License.
Dedicated to the wisest being I ever had the pleasure of reading
  books of (currently spending some time dead for tax reasons).
The newest version can be found at the ACME homepage:
  http://sourceforge.net/p/acme-crossass/

Usage:
acme [OPTION...] [FILE]...

Options:
  -h, --help             show this help and exit
  -f, --format FORMAT    set output file format
  -o, --outfile FILE     set output file name
  -r, --report FILE      set report file name
  -l, --symbollist FILE  set symbol list file name
      --labeldump        (old name for --symbollist)
      --vicelabels FILE  set file name for label dump in VICE format
      --setpc NUMBER     set program counter
      --cpu CPU          set target processor
      --initmem NUMBER   define 'empty' memory
      --maxerrors NUMBER set number of errors before exiting
      --maxdepth NUMBER  set recursion depth for macro calls and !src
  -vDIGIT                set verbosity level
  -DSYMBOL=VALUE         define global symbol
  -I PATH/TO/DIR         add search path for input files
  -Wno-label-indent      suppress warnings about indented labels
  -Wno-old-for           suppress warnings about old "!for" syntax
  -Wtype-mismatch        enable type checking (warn about type mismatch)
      --use-stdout       fix for 'Relaunch64' IDE (see docs)
      --msvc             output errors in MS VS format
      --color            uses ANSI color codes for error output
      --fullstop         use '.' as pseudo opcode prefix
  -V, --version          show version and exit

Now try the example from reddit again

acme -f cbm -o test.prg test.s
x64 test.prg

It successfully turns the the background black.

Cycle the border and background colors rapidly:

ldy #$0a
ldx #$00
start:
sty $d020  ; border color
stx $d021  ; bg color around text
inx
dey
jmp start
rts

hexdump -C test.prg
00000000  01 08 0c 08 0a 00 9e 32  30 36 38 20 3a 2d 29 00  |.......2068 :-).|
00000010  00 00 00 00 00 a0 0a a2  00 8c 20 d0 8e 21 d0 e8  |.......... ..!..|
00000020  88 4c 18 08 60                                    |.L..`|
00000025

how to recompile and reload within x64 without restarting it completely (though it is plenty fast to restart completely).