VOGONS


First post, by jim78b

User metadata
Rank Member
Rank
Member

hello everyones! i have a trouble. i owner of a schneider euro pc 8088 with a cgaout db9 pin, i have i monitor commodore 1084 s ,how i can the cable for connect my old pc to it?

i post specifications of monitor

1084S

Picture Tube: 14 inch (13 inch viewable), slotted triplet pitch 0.42 mm
Deflection: 90°
Monitor input sockets for RGB signals:
9-pin D: RGB Analog 0.7 P-P, 75 Ohm
DIN connector: RGBI Digital TTL Levels
Resolution: 640 x 200 lines, 640 x 400 lines interlaced
Characters: RGB, RGBI, 2000 characters, Composite, Seperated LCA, 1000 characters
Raster Frequency: 50 or 60Hz
Line Frequency: 15625 - 15750Hz
Sound Output: 1WRMS
Audio Signal: 1.0V P-P, 47K Ohm
Mains Voltage: 120 VAC, 60Hz
Power Consumption: 75W
Dimensions (H x W x D): 330 x 357 x 378 mm
Weight: 11 kg

Looking at the back of the monitor

Digital Analog
Pin Number TTL Mode RGB Analog Mode

1 Ground Ground
2 Ground Ground
3 Red Red
4 Green Green
5 Blue Blue
6 Intensity N/C
7 N/C Composite Sync
8 Horiz.Sync N/C
9 Vert. Sync N/C

my question is, i shall connect which pins from my pc db9 to my pin 8,9 my monitor? cga is a ttl signal?

CGA PINOUT

1 GND Ground
2 GND Ground
3 R Red
4 G Green
5 B Blue
6 I Intensity
7 RES Reserved
8 HSYNC Horizontal Sync
9 VSYNC Vertical Sync

Reply 3 of 15, by Markk

User metadata
Rank Oldbie
Rank
Oldbie

The euro pc has one internal 8bit ISA slot. If you get an ISA VGA card, even a 16bit one, it should work. A friend of mine has 2 euro pcs, and both of them have a vga card. That way you can connect it to a standard monitor.

Reply 5 of 15, by DonutKing

User metadata
Rank Oldbie
Rank
Oldbie

What model 1084S do you have. I have a 1084S-D2, it just has a 9 pin d-sub connector on the back of the monitor. You've already posted the pinouts in your OP and my manual agrees with that.

You just need a cable with a 9-pin dsub on each end, wired up identically on both ends - as you can see here http://pinouts.ru/all/CGA_pinout.shtml the pinout is the same on both the monitor and the video card.

You must also set the ANALOG/TTL switch to TTL mode and the CVBS/RGB switch to RGB mode if you have these switches on your monitor.

If you are squeamish, don't prod the beach rubble.

Reply 6 of 15, by jim78b

User metadata
Rank Member
Rank
Member

ok
you're so kind.
I have to make db9 cable as in the diagram of the CGA. both sides must have the same pin.right?
then I push all the 2 buttons ?

excuse my english!

i have a db9 cablei try to connect pc with monitor my image is as i connect a vga cable instable!!!

Reply 8 of 15, by DonutKing

User metadata
Rank Oldbie
Rank
Oldbie

Sorry I don't understand the question? I've said everything I know. I haven't tried this myself, just going off what the manual says.

If you are squeamish, don't prod the beach rubble.

Reply 10 of 15, by DonutKing

User metadata
Rank Oldbie
Rank
Oldbie

Well if that's the case all I can suggest is to check the cable has the same pinout on both ends, and that none of the wires or pins are broken. The buttons should be set as I described above, according to my manual.

If you are squeamish, don't prod the beach rubble.

Reply 11 of 15, by jim78b

User metadata
Rank Member
Rank
Member

ok it is right i don t see the image stable i get the service manual of my pci post image of db9 pinout. so you can help me?

Attachments

  • rgb.JPG
    Filename
    rgb.JPG
    File size
    24.3 KiB
    Views
    2662 views
    File license
    Fair use/fair dealing exception

Reply 15 of 15, by jim78b

User metadata
Rank Member
Rank
Member

i m sorry the cable doesn't work!! i have an idea ...if i Connect fron my pc h sync and v sync togheter to' composite pin of my monitor? this for the reason i see the image out of frequency....