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Perilous Pit by Blaby

Posted: Tue Nov 27, 2012 10:57 pm
by daelectron
This seems to be a reasonably strong .wav file of the cassette Perilous Pit by Blaby. It works fine on my Dragon 32. Unfortunately it does not seem to work on xRoar. What am I missing?

http://www.acornelectron.co.uk/Perilous_Pit.zip

CLOADM (ENTER)

to load.

I have taken a .wav of each side of the cassette just in case. I get an ?OM error at line 255. But listing 255 gives nothing.

Re: Perilous Pit by Blaby

Posted: Tue Nov 27, 2012 11:30 pm
by robcfg
I get an "I/o Error in 255", which is that XRoar cannot recognize some bits right and it fails when loading.

I'll try to check it this weekend along with your Emperor Must Die wav files.

Keep these dumps coming! ;)

Re: Perilous Pit by Blaby

Posted: Tue Nov 27, 2012 11:58 pm
by Alastair
Ditto "IO error" (input/output) here rather than "OM error" (out of memory).

Re: Perilous Pit by Blaby

Posted: Wed Nov 28, 2012 1:08 am
by zephyr
This one was easy to recover. The entire game is written in BASIC, and compiled with SPRINT.

Re: Perilous Pit by Blaby

Posted: Wed Nov 28, 2012 11:28 am
by robcfg
That was fast!

Great work! ;)

Re: Perilous Pit by Blaby

Posted: Wed Nov 28, 2012 8:29 pm
by Alastair
robcfg wrote:That was fast!

Great work! ;)
It certainly was, it looks like I missed the boat with my offering but I did eventually succeed in getting it to load.

I got it to load in XRoar with the "-no-tape-fast" option so it is likely that something in the recording was tripping XRoar up in fast tape mode. Combined with the "-tape-rewrite" option I've managed to produce both a wave file and a .CAS file that work in XRoar in normal mode.

DaElectron, for future problem tapes you may find the following XRoar options useful:

-no-tape-fast (disables tape acceleration)
-tape-pad (enables tape padding - though not useful in this case)
-tape-rewrite (enables the rewriting of everything read from an input tape to an output tape)

For example, to create the new "Perilous Pit" tape images I started XRoar from the command line with:
xroar -no-tape-fast -tape-rewrite
used Ctrl+L to select "Perilous_Pit_Side_A.wav", Ctrl+W and typed in "Perilous_Pit.wav" (or "Perilous_Pit.cas" - the extension is important), then CLOADMed the game in the normal manner (at this point you can hold down the F12 key to speed things up). After the game finished loading I quit XRoar so as to prevent anything else being written to the output file.

Re: Perilous Pit by Blaby

Posted: Thu Dec 20, 2012 3:29 pm
by samplefiend
Many thanks for uploading this game! I've been looking for a working file for years and I've never seen a copy on ebay either. I used to love this game for some reason back in the day although it got a terrible review from Dragon User. :-)

Cheers,

Craig