First post, by nfitzkee
Hello,
I'm having difficulty with graphics when using DOSBox 0.74 in Tandy mode on my PowerBook G4 (Running Mac OSX 10.4.11). Specifically, I use machine=tandy to hear the 4-channel audio on old Sierra AGI games. This has worked fine on my PC, but recently when I tried doing it on my Mac, I get vertical scrambling when the game loads (an example is attached for Kings Quest 1). The scrambling also appears for other games as well (e.g. Railroad Tycoon running in Tandy mode).
I downloaded DOSBox 0.73 and the problem is also present there. As I mentioned, the games seem to run fine on the PC version of DOSBox (using machine=tandy), and the text mode (i.e. the DOS prompt) shows no problems. The video issues go away on the mac when running in svga_s3 mode.
Below I have included what I think are the relevant lines in my dosbox.conf file. This is the simplest resolution/scaling I can think of, but the defect appears for higher quality settings as well.
[sdl]
fullscreen=false
fulldouble=false
fullresolution=original
windowresolution=original
output=surface
autolock=true
sensitivity=100
waitonerror=true
priority=higher,normal
mapperfile=mapper-0.74.map
usescancodes=true
[dosbox]
language=
machine=tandy
captures=capture
memsize=16
[render]
frameskip=0
aspect=false
scaler=none
[cpu]
core=auto
cputype=auto
cycles=auto
cycleup=10
cycledown=20
[dos]
xms=true
ems=true
umb=true
keyboardlayout=auto
[autoexec]
MOUNT C "/DOS Volume"
C: