#Non-Interlace AGA
7 messages in this thread
I have an a1200 with 030 in it and its great. But when it comes to
word processing some things are missing. Greater non-interlaced
resolution would be welcomed. Are there video drivers available for
Amiga AGA to display lets say 800×600 in non interlaced resolution. I
tryed Moned3a to increase refresh rates and horizontal frequency, but
to no avail. So, are there anyonther drivers besides those that came
with WB3.0? (I know AGA can go beyond DBLntsc and Multiscan, so why
doesn't it have drivers for it?)
EK >>Greater non-interlaced resolution would be welcomed. Are there video
drivers available for Amiga AGA to display lets say 800×600 in non
interlaced resolution.<<
Nope.
While the AGA chips can due 140ns, 70ns, & 35ns pixels at speeds of ~15,
~24, & ~31 kHz, and can refresh from ~50 to ~110 Hz — it doesn't have the
17.5ns pixel speed needed for a 1024 VGA mode.
—
Limiting the screenmode's maximum height or width, allows you to increase
the refresh rate but reduces resolution.
There are also other graphic timing constraints, such as the sprites. The
DblNTSC & DblPAL drivers reduce the refresh to ~27kHz, increasing width.
If you use the VGA-Only flag, the monitor drivers are adjusted to be
closer to the VGA rate of ~31kHz, by reduces the screen width. If you use
MonED, you can reclaim part of the screens width, BUT you may notice that
the mouse pointer, and other sprites vanish before they enter the MonED
added overscan area, although the screen can use that area.
Check the Amiga Hardware libary for a text file called AMYBITS.LHA. It
contains some info about the Amiga's graphics. Some of the info may be
wrong (I wrote it).
—
There are a few user modified Super72 drivers floating around, that
increase the refresh rate anywhere from ~77, to ~95.
You can try this set of options in the ICON of the Super72 to make it
~95Hz, with a resolution of 832×512, but you may need to adjust the
Overscan also. WARNING! this could damage your monitor!
–
HBSTRT=0x009
HBSTOP=0x01F
TOTCLKS=0x84
VBSTRT=0x000
VSSTRT=0x0630
HSSTOP=0x017
HSSTRT=0x1E
VSSTOP=0x2A8
VBSTOP=0x10B5
TOTROWS=0x11B
–
you should have ALL the monitor drivers in your Storage/Monitors
drawer. Just move 'em over into DEVS:Monitors drawer – of course YOU
WILL NEED a multisync monitor to use most of 'em. Super72 at 800×600
looks very nice and narry a flicker on a Mitsubishi Diamondscan 1381A
– looking at one next to me on a 1200 w/CSA 12-guage in it. Also you
can get 640×480 and 640×960 and etc. etc. resolutions with various
AmigaDos 3.0 monitor drivers you should have somewhere in your
system. Now, the question is, does the software let you use those
resolutions , e.g. does your wordprocessor/desktop publishing program,
etc. let you use Super72 or similar graphics mode? Most graphic
programs DO, but I'm not sure on the publishing programs.
I use the new ViewSonic 15. Super 72 requires 24 Khz sygnal and my monitor
can't display that. Well I guess I am pretty much happy with 640×480. I use
FinalWriter and it lets me select any monitor thats in my devs drawer. ( I
can't wait until the AAA chip set comes out. Hopefully it will give better
resolutions and good speed.)
The Mitsubishi 1381's I've been selling DO handle Super72 (as well as
everything else I throw at them). I was AMAZED at the huge response
to my ad in the April Amiga World (MegageM ad in Infomarket section
in the back). I've been deluged with orders and I think we won't be
able to supply them much longer. The Amiga community seems to be very
hungry for monitors which really handle AGA properly without costing
more than the computer!
Daniel –
How would the 1381s work with the graphics cards like Picasso,
Spectrum, etc.? How do they compare with the NEC 3D? I'm very interested
in the $279 price, but I want to get one that I'll be able to use for a
while (a graphics card is in the future somewhere …). If you think
they'll work well for, say, up to 1024×768, and the dot pitch isn't too
bad, I'd like to have one. If you like, you can call me at (404) 552-1867
eves/wknds, (404) 246-8678 days. Thanks!
Harry
I use a 1381A with my Retina Board if that tells you anything. I haven't tried
Picasso or EGS Spectrum yet. But I use the Retina for 24-bit display at
768×480 (as we speak, so to speak, Retina is outputting FractalPro image
sequence being generated in the background at 768×480 resolution for later
conversion to a PAR animation for my FractalPro video 'FractalPro – The
Movie'). I think I've tried it at 1024×768 (one of FractalPro's 24-bit
resolutions available with Retina) but I can't remember. I usually use 768×480
for video reasons. I'll check it out. I've done a bunch of ADPro work with
24-bit output to the Retina at various resolutions, but just don't specifically
recall anything over 768×480. Good question so I'll try to get you an answer.