lr-vice and Vic-20, Plus/4, C128, and Commodore Pet

rkoster

I got the Commodore PET working. It involved source code work to support it as a libretro core, though.

My fork of lr-vice with support for PET is here: https://github.com/raphkoster/vice-libretro

git clone https://github.com/raphkoster/vice-libretro.git
make clean
make EMUTYPE=xpet
sudo cp vice_xpet_libretro.so /opt/retropie/libretrocores/lr-vice

Then add it to es_systems.cfg:

  <system>
    <name>pet</name>
    <fullname>Commodore Pet</fullname>
    <path>/home/pi/RetroPie/roms/pet</path>
    <extension>.crt .d64 .g64 .prg .t64 .tap .x64 .zip .vsf .CRT .D64 .G64 .PRG .T64 .TAP .X64 .ZIP .VSF .p00 .P00</extension>
    <command>/opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ pet %ROM%</command>
    <platform>pet</platform>
    <theme>pet</theme>
  </system>

then create /opt/retropie/configs/pet, (I just copied the c64 folder) and put this in emulators.cfg:

lr-xpet = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-vice/vice_xpet_libretro.so --config /opt/retropie/configs/pet/retroarch.cfg %ROM%"
default = "lr-xpet"

I haven't figured out controls or anything, but games boot. Keyboard seems rather wonky -- punctuation is all weird. Might just be a default setting to a different language. I don't want to submit an upstream pull request until it gets banged on some more, though. Maybe someday we can have C128, Vic-20, Plus/4, and PET as full installs in RetroPie. :)

@BuZz, I've had no luck so far in getting libretro upstream to notice my pull requests. Is there a channel to use other than github?

rkoster

Turns out that the original PET keyboard doesn't have numbers on the top row! Only the numbers on the numpad work. That explains what I was seeing.

There are some models that used the "business keyboard"; 4032B is one example that does have number keys, though much of the punctuation is in different places. I bet the B models specifically mean that keyboard.

Also, the later models seem to default to 80 column; you probably don't want to use them for games for that reason.

paradadf

@rkoster join them on discord and tell them about your PRs. Sometimes they are too busy/distracted than don’t really pay attention.

rkoster

The PET support has been merged upstream.

To get all these additional machines, though, would involve getting RetroPie to add them to the build script the way they are for the regular Vice emu, I think?

mitu

@rkoster It might be just as easy as adding them to the runcommand menu - is that what you're referring to ?

rkoster

@mitu The lr-vice scriptmodule only compiles the C64 core. The way Vice works is that you compile each of the different machines separately. So the scriptmodule would need to compile Vic-20, Plus4, C128, and now Pet.

The standalone Vice scriptmodule already installs all of them, I think.

mitu

The following patch should do the trick:

--- a/scriptmodules/libretrocores/lr-vice.sh
+++ b/scriptmodules/libretrocores/lr-vice.sh
@@ -22,7 +22,8 @@ function sources_lr-vice() {
 
 function build_lr-vice() {
     make -f Makefile.libretro clean
-    make -f Makefile.libretro
+    make -f Makefile.libretro 
+    make -f Makefile.libretro EMUTYPE=xpet
     md_ret_require="$md_build/vice_x64_libretro.so"
 }
 
@@ -31,6 +32,7 @@ function install_lr-vice() {
         'vice/data'
         'vice/COPYING'
         'vice_x64_libretro.so'
+        'vice_xpet_libretro.so'
     )
 }
 
@@ -42,5 +44,6 @@ function configure_lr-vice() {
     chown -R $user:$user "$biosdir/data"
 
     addEmulator 1 "$md_id" "c64" "$md_inst/vice_x64_libretro.so"
+    addEmulator 0 "$md_id-xpet" "c64" "$md_inst/vice_xpet_libretro.so"
     addSystem "c64"
 }

rkoster

Yes, but you may as well add

make -f Makefile.libretro EMUTYPE=x128
make -f Makefile.libretro EMUTYPE=xplus
make -f Makefile.libretro EMUTYPE=xvic

since they also all work.

tomi7711

Hi!

Try yape if you like Commodore Plus/4. On Raspberry Pi3 works perfectly.

https://github.com/calmopyrin/yapesdl

shift

Has anyone managed to make Cartridges work for Vic-20? With Vice there is the possibility to add the -cartgeneric parameter, but I tried with lr-vice and it doesn't work.