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Released by :
XmikeX
Release Date :
7 December 2018
Type :
C128 Release
Proper release: 101%
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Credits :
Download :
Look for downloads on external sites:
Pokefinder.org
Production Info
Submitted by XmikeX on 7 December 2018
* FASTMODE FIX
The original Beyond Zork game does activate 2MHz fast mode, unlike the Trinity game. HOWEVER, Infocom made a mistake regarding fast mode activation. They completely forgot to blank the VIC-II chip. Instead of a properly blanked VIC-II display, Infocom gives us a messy VIC-II screen with bus-data being displayed as the C-128's VIC-IIe is prone to do at 2MHz. The normal procedure when engaging fast mode involves correctly blanking the VIC-II. The kernal fast mode function at $77B3 handles this perfectly, twiddling the proper bit at $D011 among other things.
With the VIC-II display blanked, as in this release, the VIC-II doesn't have to steal timing cycles from the processor as it normally does even maybe when stuck in 2MHz. As a result, the C-128 should run about 7 percent faster with the VIC display blanked off.
NOTE: The directories might look like crap or give no info when you read them. That's fine, the disk images are not corrupt. The game uses a C-128ism known as "sequential serial load" from Track1, Sector1, on up, and this is initiated by autoboot/boot handling from the C128 kernal.
NOTE: Beyond Zork was never converted to the C64. It was converted to the C128. It is the 4th and last C-128 game from Infocom.
NOTE: This game was tested (and works) on Z64K and VICE emulators. |
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