TAP files an the PET

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ViperSan
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TAP files an the PET

Postby ViperSan » Sat Aug 12, 2017 4:38 am

So ...I finally repaired my PET4032 ...and my 8050 dual floppy ...
Now I want to get space invaders on it ..
I have downloaded a TAP file of space invaders for the PET ...dumped this to audio cassette with Audiotap ....
popped the cassette in a datasette attached to the PET ...and set it to load ..
the Load completes ...but the ML programme is not in the correct location in memory ...thus I cannot run it..
I'm assuming audiotap is generating an unsuitable header...probably for C64 or VIC
Is there a version of audiotap specifically for the PET ...or an easy fix to relocate the space invaders program in memory..
any help appreciated..
rgds
VS

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mrr19121970
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Re: TAP files an the PET

Postby mrr19121970 » Sat Aug 12, 2017 5:23 am

Why not play around with it in VICE 1st?

Can you post a link to the TAP file you are trying

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Re: TAP files an the PET

Postby mrr19121970 » Sat Aug 12, 2017 5:42 am

There is a version here http://www.classic-computers.org.nz/blo ... wnload.htm

that loads, but crashes after the 1st screen.

Using FinalTap you can extract the PRG. You need to correct the header in a HEX editor from 01 08 to 01 04 to get it to run (still crashes in VICE)

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Re: TAP files an the PET

Postby pixel » Sat Aug 12, 2017 5:51 am

ViperSan wrote:I'm assuming audiotap is generating an unsuitable header...probably for C64 or VIC

That's fortunately not right. Audiotap converts TAPs without any change of content.

Could a 'LOAD "*",1,1' do the trick and load it to the right address?
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ViperSan
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Re: TAP files an the PET

Postby ViperSan » Sat Aug 12, 2017 6:00 am

mrr19121970 wrote:There is a version here http://www.classic-computers.org.nz/blo ... wnload.htm

that loads, but crashes after the 1st screen.

Using FinalTap you can extract the PRG. You need to correct the header in a HEX editor from 01 08 to 01 04 to get it to run (still crashes in VICE)

When you say 'crashes after the first screen' ...I assume you mean after displaying the audio mod via parallel port screen ..
That is the same one I downloaded ...and it does just that ..
loads ...
displays the parallel port mod page for sound ...
then pressing any key results in a blank screen ..and crash..(presumably)
it just hangs..
rgds
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mrr19121970
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Re: TAP files an the PET

Postby mrr19121970 » Sat Aug 12, 2017 7:25 am

Download the PRG from zimmers. This works fine (doesn't crash after audio mod screen).

http://www.zimmers.net/anonftp/pub/cbm/ ... vaders.prg

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ViperSan
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Re: TAP files an the PET

Postby ViperSan » Sat Aug 12, 2017 7:32 am

mrr19121970 wrote:Download the PRG from zimmers. This works fine (doesn't crash after audio mod screen).

http://www.zimmers.net/anonftp/pub/cbm/ ... vaders.prg


..that is a PRG file which I will presumably need to convert to TAP ...
Could you outline how to do this please ?
rgds
VS

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mrr19121970
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Re: TAP files an the PET

Postby mrr19121970 » Sat Aug 12, 2017 7:41 am


norm8332
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Re: TAP files an the PET

Postby norm8332 » Sat Aug 12, 2017 7:47 am

Hmmm.. I used my 4040 drive since it could read 1541 disks. Then I made a PetDisk. It's like an SDIEC but for a PET. They can be built with plans on the internet or purchased. http://www.bitfixer.com/bf/petdisk and http://blog.tynemouthsoftware.co.uk/2015/06/pet-microsd-commodore-pet-sd-card-disk-drive.html

This works on a PET also for .TAP files: https://hackaday.io/project/1985-tapuino-the-20-c64-tape-emulator


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