Vic20 Multipart games

Bricks · Newbie Joined: 25 Oct 2002 Posts: 1

Anyone know how you get multipart Vic20 games to run in an emulator like Vice?

I can get the loader part to run but then the Vic20 has an error 'file not found'.
The files I've got are *.prg. Vice doesn't seem to let me attach these as tape or disk images.
Attaching as cart images doesn't do anything either.

Thanks in advance.

SexyWayne · Posted: Fri Oct 25, 2002 8:50 pm Post subject:

download a dedicated vic 20 emu, vice is more orientated to c64 emulation, i think the vic 20 & 128 were thrown in as added extras IMHO

bacon · Posted: Sat Oct 26, 2002 8:37 am Post subject:

What you have are probably the dumped contents of cartridges. VIC-20 carts frequently had two 8K ROMs in them, which were mapped to $6000 and $a000 in the VIC's memory map.

What you need to do is make sure you have the VIC-20's memory fully expanded (32K), so that there is RAM in the area where the files are loaded.
Turn off true drive emulation and set drive 8 to use a directory in you filesystem instead of a disk image. Put the .prg files in that directory.

Load the first part with LOAD"<FILE1>",8,1.
Enter the command NEW.
Load the second part with LOAD"<FILE2>",8,1.
Do a soft reset of the VIC-20 emulator (alt-r). The game should start.

If you want to you can use StarCommander or c1541 (comes with VICE) to put the files in a disk image so you can attach that instead of using the filesystem. The procedure for loading will be the same.

This is not a fault of VICE. Loading these games on a real VIC-20 is done the same way.
_________________

Bacon
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Das rubbernecken Sichtseeren keepen das cotton-pickenen Hands in die Pockets muss; relaxen und watschen die Blinkenlichten.

Garak · Posted: Sat Oct 26, 2002 10:31 am Post subject: Re: Vic20 Multipart games

Bricks wrote:

Anyone know how you get multipart Vic20 games to run in an emulator like Vice?

I can get the loader part to run but then the Vic20 has an error 'file not found'.
The files I've got are *.prg. Vice doesn't seem to let me attach these as tape or disk images.
Attaching as cart images doesn't do anything either.

That's because .PRG files are _not_ disk images, tape images, or cart images but is a standard Commodore program file. You can't "attach" a .prg.

You didn't say which version of VICE so I'll give 2:

- WIN Vice

Do not "Attach" anything: disk, tape, or cart
Click on "Settings" menu
Click on "Device Settings"
Click on "Drive 8" tab
Click on "Directory" and enter path to where your .PRG files are located
then click "OK" you should now be able to do a LOAD"$",8 and see your PRG file. It may look a bit garbled so do a "Shift"+"Commodore key" to switch sets.

- DOS Vice

Click on "Attach Image"
Click on "Drive 8"
Select directory PRG is in (it won't show in the listing)
press "ESC" to go back
You should now be able to do a LOAD"$",8 and it will show. Switch PETSCII sets if necessary to be able to read filename clearly (this is due to Win/DOS letting filename be in small or cap letters now)

This will work to load a PRG file into any of the DOS/WIN VICE emulations BTW.

Now, for the VIC 20 - the VIC 20 has a very interesting memory scheme and it changes depending on what ram expansion is available. Your program may not run right if, say, you have 8K expansion selected if it was meant for 4K expansion. The only way is to keep playing with the ram settings till it works.

Good luck!

Garak
_________________

Proud to be "predictably pedantic".
"Business is war, I don't believe in compromising. I believe in winning." - Jack Tramiel
"Frammin' on the jim-jam, frippin at the krotz." - The Wizard of Id

Garak · Posted: Sat Oct 26, 2002 10:38 am Post subject:

SexyWayne wrote:

download a dedicated vic 20 emu, vice is more orientated to c64 emulation, i think the vic 20 & 128 were thrown in as added extras IMHO

The VIC-20 VICE emulation is pretty much the only advanced one for the PC platform as is Power VIC for the MAC. The same with the C128 emulation. There not thrown in extra's either, but they do have a lower priority then the C64 emulation. They have to do it this way or people start to complain about it.

Garak
_________________

Proud to be "predictably pedantic".
"Business is war, I don't believe in compromising. I believe in winning." - Jack Tramiel
"Frammin' on the jim-jam, frippin at the krotz." - The Wizard of Id