The console mode won't damage the monitor, but you can't read anything on screen. There is a program to give you a hires text mode, can't think of its name. We have our systems configured to run xdm so (if the sytem boots ok) you don't need the console.
This info courtesy of Javaan Chahl
(From the Editor)
Some of the last few sections come from the comp.sys.ibm.pc.hardware.video FAQ at URL: http://www.heartlab.rri.uwo.ca/vidfaq/videofaq.html (R)
The VN10KM is a small signal N channel enhancement mode mostfet also available from most electronics store.
IF the video card you are using is a standard VGA output: (Im using a diamond stealth 64 VRAM)
1: RED video 2: Green video 3: blue video 4: monitor id bit 2 5: Ground 6: red return 7: green return 8: blue return 9: NC 10: sync return 11: monitor id bit 0 12: monitor id bit 1 13: H sync 14: V sync 15: NC
I join all the "returns" together with the ground on the small PCB and use that as a common ground for the RGB cable to the monitor. You can use separate if you want to but you should join the green return and sync returns together. I did find some small shadowing if I didn't group them all together.
Just a note, when you set up your video card in Windows set it to 1280x1024x72|66 or whatever is closest I use a VR260 (1024x864) at 1027x768@66Hz (check with your manual DA or D4 are 72Hz) your VGA will not like this frequency so either disconnect it quickly or before you actually set the video card to this mode (i.e. put the OK as the active control in Windows and then connect the VR320 and hit return) My diamond setup gives me 10 seconds to do this adjustment When you exit you will probably have to select the 1280x1024 mode with your old VGA connected again and from then on every time you start Windows you will be able to view it in "big" colour mode. Note the vr320 will not work in DOS mode as it is not a multisync monitor so all you see when you boot up is garbage until Windows starts, I put "win" in my autoexec.bat file.
Note there is a danger here:
I had set up the monitor and for soeme reasonm it did not work so I couldn't see what was going on: my ol VGA wouldn't work and the VR wouldn't work either so I had to find the cards .ini files and edit by hand to get back to useable video!
For FreeBSD/XF86 the lines are:
#VR260 monitor is 70MHz 1024x864 #VR320/319 monitor is 130MHz 1280x1024 # Modeline "1280x1024" 130.81 1280 1312 1472 1696 1024 1027 1030 1063 +hsync +vsync Modeline "1024x864" 69.2 1024 1040 1168 1272 864 864 867 904 +hsync +vsync
The circuit to do this is as follows::
Notes:
+5.0V
|
/
\ VR1 (1k carbon mini pot)
33uF tantalum | ~0.3V DC in porch area
GREEN------+----||-----+-----------------+-----GREEN to monitor
| | |
+----||-----+ |
.1-.01uF ceramic |
|
gnd |
| |
/ |
\ 47k |
/ | _|
HSYNC---+----|-------\ | VN10KM or similar
| GATE |---CSYNC----+----|| small N channel
VSYNC---+----|-------/ / |_ enhancement MOSFET
/ | \ |
\ / |
/ 47k \ 47k |
| | |
gnd gnd gnd
HSYNC, VSYNC and CSYNC are grounded with 47k carbon resisitors
GATE=LS or HC types, HC preferred.
OR: for -ve logic sync and no hsync during vsync
NAND: for +ve logic sync and no hsync during vsync
XOR: for -ve or +ve logic sync and hysnc during vsync
Capacitors are optional, I dont use them
use XOR gate with DEC monitors and as a first shot with others, then OR gate then NAND gate.
Get a CRO an adjust porch levels to 0.3V and 0 level (sync level) to 0.0V
Sync-on-green combines the H and V sync into a composite sync signal (your video card like ATI may already have this capability) and then merges it with the video.
Video: .7 V p-p white it positive.
Sync: .3 V p-p sync tips negative.
The combination is either OR or XOR - which works better depends on characteristics of video signal and monitor.
Section "Files"
FontPath "/usr/X386/lib/X11/fonts/misc/"
FontPath "/usr/X386/lib/X11/fonts/75dpi/"
FontPath "/usr/X386/lib/X11/fonts/100dpi/"
RGBPath "/usr/X386/lib/X11/rgb"
EndSection
Section "ServerFlags"
EndSection
Section "Keyboard"
Protocol "Standard"
ServerNumLock
EndSection
Section "Pointer"
Protocol "microsoft"
Device "/dev/ttyS1"
EndSection
# Monitor configuration for Apollo monitors - 010700-001 19" 1280x1024 68Hz
# Use with care!! Do not use this configuration for other monitors
Section "Monitor"
Identifier "Mag"
VendorName "buggers"
ModelName "15"
BandWidth 100 # EDIT THIS!
HorizSync 20-90 # EDIT THIS!
VertRefresh 45-100 # EDIT THIS!
ModeLine "Apollo" 125 1280 1312 1504 1696 1024 1027 1030 1080
EndSection
Section "Device"
Identifier "Diamond Stealth 64 DRAM (Trio64)"
VendorName "buggers"
BoardName "unknown"
VideoRam 2048
Option "dac_8_bit"
EndSection
Section "Screen"
Driver "accel"
Device "Diamond Stealth 64 DRAM (Trio64)"
Monitor "Mag"
Subsection "Display"
Depth 8
Modes "Apollo"
ViewPort 0 0
Virtual 1280 1024
EndSubsection
EndSection
#### Apollo FAQ - monitors info
I compiled this info a while ago from an HP source plus bits and pieces I picked up. There are frequent questions about the monitors (esp. frequency) so maybe this, or part of it, could go in the FAQ. (I've mailed this out many times already, it would be easier to just refer people to the FAQ.)
Russell Ayling | Internet : rayling@xwdev.pandc.rta.oz.au Roads and Traffic Authority | Phone : + 61 2 218 6945 260 Elizabeth Street | FAX : + 61 2 218 6099 Surry Hills, NSW, AUSTRALIA 2010 |
Part numbers: 007284R 15" 1024x800 60Hz 008398-001R 19" 1024x800 Northern hemisphere 008398-005R 19" 1024x800 Southern hemisphere 010700-001R 19" 1280x1024 68Hz Northern hemisphere 010700-004R 19" 1280x1024 68Hz Southern hemisphere 010700-005R 19" 1280x1024 70Hz Northern hemisphere 010700-006R 19" 1280x1024 70Hz Southern hemisphere
Note: 1280x1024 "F" graphics cards support 68Hz and 70Hz by jumper selection. (A 70Hz monitor will run at 68Hz, but the image will be slightly narrower than the screen display limits.)
15" 1024x800 19" 1024x800 19" 1280x1024
-------------- ------------ -----------------
Size 16" 20" 20"
(15" diagonal (19" d.m.) (19" d.m.)
measure)
CRT type Matsushita Matsushita Matsushita
38JFG36X/B 48JFJ50X/B J2P36X
Dot trio
pitch 0.31mm 0.32mm 0.26mm
Phosphor Medium Medium Medium short
persistance P22 persistance P22 persistance P22
Electron gun: Precision inline
Convergence: Self convergence
Deflection angle: 90 degrees
Deflection yoke: Matsushita Type SST
Following specifications apply to the 15" and 19" 1024x800 monitors:
Resolution 1024x800 (noninterlaced)
Scanning frequency range Horizontal 50.2 kHz (+/- 500Hz)
Vertical 47 to 80 Hz
Blanking time Horozontal 4.713 usec maximum
Vertical 828.83 usec max (15")
831 usec max (19")
Retrace time Horozontal 3.713 usec max
Vertical 600 usec max
Video amplifier
bandwidth +/- 3dB form 50Hz to 70MHz minimum
pulse rise and fall time 5 nanosec (max) measured from 10% to 90%
differential tilt not more than 3% on blanking waveforms
video polarity Positive for Peak Luminance of the CRT
video gain no perceptible change at any brightness
setting when a 15nsec pixel is written
adjacent to a 60nsec bar
Degauss
duration < 15 sec
type Automatic at power on
X-Ray radiation < 0.5 MR/H
Horozontal frequency Duration: 19.794 usec (50.519 kHz)
front porch 0.942 usec
sync 1.88 usec
back porch 1.88 usec
blanking 4.71 usec
display area 15.084 usec
Vertical frequency Duration: 16.67 usec (60.0 kHz)
front porch 79.176 usec
sync 79.176 usec
back porch 673.0 usec
blanking 828.83 usec (15")
831 usec (19")
display area 15.841 usec (15")
15.839 usec (19")
Note: Apollo 1024x800 color graphics boards use a horozontal frequency of 50.519 kHz, vertical frequency of 60Hz
usec = microseconds Part numbers: 007284R 15" 1024x800 60Hz 008398-001R 19" 1024x800 Northern hemisphere 008398-005R 19" 1024x800 Southern hemisphere 010700-001R 19" 1280x1024 68Hz Northern hemisphere 010700-004R 19" 1280x1024 68Hz Southern hemisphere 010700-005R 19" 1280x1024 70Hz Northern hemisphere 010700-006R 19" 1280x1024 70Hz Southern hemisphere
Note: 1280x1024 "F" graphics cards support 68Hz and 70Hz by jumper selection. (A 70Hz monitor will run at 68Hz, but the image will be slightly narrower than the screen display limits.)
15" 1024x800 19" 1024x800 19" 1280x1024
-------------- ------------ -----------------
Size 16" 20" 20"
(15" diagonal (19" d.m.) (19" d.m.)
measure)
CRT type Matsushita Matsushita Matsushita
38JFG36X/B 48JFJ50X/B J2P36X
Dot trio
pitch 0.31mm 0.32mm 0.26mm
Phosphor Medium Medium Medium short
persistance P22 persistance P22 persistance P22
Electron gun: Precision inline
Convergence: Self convergence
Deflection angle: 90 degrees
Deflection yoke: Matsushita Type SST
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