Commodore 128 Trinity Imaged
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The Infocomm game Trinity was released around the time that the Commodore 128 computer became available, and was one of the games that took advantage of the new features of the machine, and required an 80 column monitor. This ZIP file contains disk images of several versions of the game.
Notes from the person who created the images:
First, I was using my ZoomFloppy and the OpenCBM NIBRead software, works excellently for protected disks in my experience.
This is on a "known good" 1571 connected via Serial "SRQ" mode. I had just imaged a few "sacrificial" floppies to test everything out, then moved on to imaging a bunch of disks for my VCF exhibit regarding GEOS. Everything seems to be working properly.
The copy of Trinity you loaned me seems to read properly using the nibbler, but I couldn't get it to boot in VICE C128.
So I moved on to my copy of the game (I have it, bought it new for my C128 shortly after it was released). I also had a successful read/nibble, but experienced similar issues booting it in VICE C128, but not exactly the same condition yours is causing.
Imaging the floppies a second time (even after cleaning the heads in the drive I'm using) cause the same data to appear in the emulator and DirMaster, so at least that's showing some consistency. LOL.
So something wasn't quite adding up, I did some research and I was able to find some D64 copies of the C128 version of Trinity on the internet. So it has been preserved, although I have no idea if the online version is hacked or modified in any way compared to an original floppy like you and I have. The TRINITY*.D64 files from this online version booted straight-away in VICE 128, and was able to play the game. I captured a screenshot of the first stanza and also included it in the attached Zip file. It's named "2019-03-23 23_04_15-VICE_ C128 emulator at 100% speed, 50 fps.png"
I continued digging into this, and looking at the directory in CBMXfer of both disks I found in the online archive (TRINITY*.D64) show the same seemingly corrupted directory entries as the images of your copy did (the same that appears when working with the resulting NBZ/NIB/G64 that I exported using NIBRead and NIBConv from your floppy). Interestingly, the directory contents of my version DIFFER from yours and the one I found online.
I initially was not sure if we are just seeing a scenario where the floppies themselves are no longer readable, or if there is something else going on. I started suspecting something with the emulator and the G64 files I've imaged. Since the D64 files found online seemed to work, I tried converting all of the imaged copies I made to D64 and lo and behold, they booted right up in the emulator!! SUCCESS ALL AROUND!!!
I was still perplexed as to why my version had a visually different directory from your copy and the one I found online.
I decided to boot each game in the emulator again, and run the Infocom interpreter "version" command. A-HA!!! That's it!
Mine is listed as:
"Interpreter 7 Version A
Release 11 / Serial Number 860509"
While yours and the one I found online are listed as:
"Interpreter 7 Version A
Release 12 / Serial Number 860926"
I have also included screenshots of the output of the "version" commands within the Zip file.
The Zip file I've attached here also contains a bunch of other files. Of the items I've imaged, there are 5 files each. The name of the files remains consistent, but the extension differs as follows:
NBZ - Compressed Nibbler file, this is the native output of the NIBRead program, which I then convert to NIB, G64, and D64 formats
NIB - Nibbler file, effectively an uncompressed "raw output" of the disk contents
G64 - A format similar to NIB and NBZ in ability to contain "raw data" but is supported in many Commodore emulators
D64 - A "lossy" older version of Commodore floppy images that doesn't support all of the protections, etc.
LOG - The output from the initial imaging to NBZ format created by NIBRead
The filenames are as-follows:
Trinity-Side_1 - Your copy of Trinity, Side 1
Trinity-Side_2 - Your copy of Trinity, Side 2
Trinity-Side_1-Try2 - Second attempt at reading your copy of Trinity, Side 1
Trinity-Side_1-Todd - My copy of Trinity, Side 1
Trinity-Side_2-Todd - My copy of Trinity, Side 2
And then the items I found online:
TRINITY1.D64 - C128 version of Trinity, Side 1
TRINITY2.D64 - C128 version of Trinity, Side 2
I still have no idea why the G64 versions won't boot in the emulator, but since they are the "more complete" copies from a raw data / magnetic flux content perspective, I think they are important to hang on to.
For playing in an emulator, it seems the D64 versions (either the ones I converted from the imaged versions or the internet one) are adequate.
I also moved on to comparing the resulting D64 files, the binary contents of both sides of your floppy in D64 format match the online version I found. This proves the online version is not hacked or modified in any way compared to an original disk. Mine naturally doesn't match on a binary level, as it's the older version of the game.
