SCI, which Sierra referred to as both the "Script Code Interpreter" and later "Sierra's Creative Interpreter", is a p-machine style virtual machine for executing platform-independent, object-oriented code.
SCI was designed for 16-bit little-endian computers, although there were later attempts to create 32-bit versions, LSCI and SCI3. SCI was exclusively used by Sierra On-Line, Inc., to run its computer game series, with titles like Leisure Suit Larry 2-7, Space Quest 3-6, King's Quest 4-7, Quest for Glory 1-4, and several others.
The SCI engine in ScummVM is based on the code of the FreeSCI project, used with permission.
SCI was initially created in 1988 by Jeff Stephenson to replace AGI. The first game using it was King's Quest IV at the same year of its creation, which was simultaneously released with an AGI edition for lower-end machines.
- Show priority and control map in original interpreter (SCI1/SCI11)
- search for A9 06 00 74 05 in original interpreter, replace with all 90h (NOP)
- Change days in Gabriel Knight 1
- vmvars g 7bh x - where x is the day number
- Break into debugger immediately on VM start
- Run ScummVM with --debugflags=onstartup
Error loading resource 999.pal message with original interpreter
King's Quest 7
- resource.cfg has to include this:
directory = .\
videoDrv = VESA.DRV
soundDrv = ADL.DRV
audioDrv = DACBLAST.DRV
joyDrv = NO
cmd = KQ7DOS
mouseDrv = NONE
memoryDrv = NONE
minMemory = 1600k
language = 1
minCPU = 386
CD = yes
- start the game using sierrah -o resource.cfg
Space Quest 6
- Just start the game using "sierra -o". That will fix it (happens at least with SQ6 DOS included in the Space Quest Collection).