A4000T not giving video output from my Cybervision64 Card

[patrik]

@Vlabguy1:

Are you using the output connector on the CV64 and not the input connector for its autoswitcher?

Btw1, the card worked before the reinstall, so it is very very unlikely that it has gone broken and about 99.999999% probability that the software is wrong.

Btw2, the original disks contain CyberGraphX v2 which is very outdated and should not be used.


/Patrik

[patrik]

As it worked before and the second card didn't make any difference, it can be rather safely assumed that the card is working correctly.

The output port is the one closest to the rectangular hole in the backplate.

It is not hard to get a card like this to work.

With a clean 3.1 installation, it is just a matter of running the CyberGraphX 4 install and after the reboot you should be able to select a CV64 screenmode from the Prefs/Screenmode program to get some output from it.


/Patrik

[patrik]

The A4000T video module does not have anything to do with the CV64. Only the original A4000T AGA video output depends on the video module. That should make sense by common logic reasoning!

Are you 100 percent sure you are using the connector closest to the rectangular hole of the CV64's backplate?

What is the mode you are trying to use called exactly and what horizontal and vertical frequencies does it have (can be read to the right if you when it is marked (one click on it) in Prefs/Screenmode)?

What model/make is the monitor you are using for test?


/Patrik

[patrik]

@Pierre:

Removing these files and directories will remove both CyberGraphX and Picasso96:
ENVARC:CyberGraphX
ENVARC:cybergraphics
ENVARC:Picasso96
ENVARC:Sys/screenmode.prefs
SYS:Prefs/Presets/monitors
LIBS:cgxsystem.library
LIBS:cgxvideo.library
LIBS:cgxbootpic.library
LIBS:cybergraphics.library
LIBS:cyberintuition.library
LIBS:cyberlayers.library
LIBS:vilintuisup.library
LIBS:Picasso96
SYS:Prefs/CGXMode
SYS:Prefs/CGXMode.info
SYS:Prefs/CyberGraphX
SYS:Prefs/CyberGraphX.info
SYS:Prefs/Picasso96Mode
SYS:Prefs/Picasso96Mode.info
SYS:Prefs/PVS
SYS:Prefs/PVS.info

Not all files/directories will exist in your system, but just keep going through the list from start to end.

Also, in SYS:Devs/Monitors you need to remove a file which is called something like CyberVision64, CV64, CVision64, Picasso96, P96. When you find it, also remove its .info file.

A reboot afterwards is required.

Btw, in which way cant you switch resolutions? Sometimes bad software will make it impossible for workbench to change resolution (it cant close the screen). The only way then is to select a resolution, save and then reboot. You will then have the new resolition at next boot. Try disabling everything in your WBStartup and User-Startup and then see if you can switch resolutions then.


/Patrik

[patrik]

@Pierre:

You don't need to reinstall your system.


@Vlabguy1:

If your motherboard was toasted, you would not come as far as being able to select a CV64 screenmode. And when on the subject - how in the world would you have managed to fry it by reinstalling the os?

Btw, what processor card do you have? If you have the stock Commodore 040-card, make sure you have 68040.library in LIBS:, if you have say a Phase5 040 or 060-card, make sure you have their 68040/68060.library in LIBS: installed correctly - see this thread.

If the libraries are not ok, the most odd things can happen as they help set the cpus caching policies etc. correctly.


/Patrik

[patrik]

@Vlabguy1:

1. There is no video output part of the motherboard, which the CV64 depends on in any way.

2. As you have a 060-card, you MUST install the 68060.library correctly, or else the OS3.1 will think you have a 040 and try running it with the 68040.library. This is NOT supplied with OS3.1, and there should be a disk bundled with your card containing this.

As 3.1 does not know of 68060.library, there should also be a "dummy" 68040.library with the 68060.library on the disk, which should replace the Commodore 68040.library. Its only task is to load 68060.library when the OS asks for 68040.library.

So in short - there should be a disk bundled with your card, containing two files called "68040.library" and "68060.library". Just copy those two files to LIBS: and reboot.

If the 68060.library is not correctly installed, much will act wierd and it is very very possible that the graphics card will be affected.

3. Does the monitor you have connected to the CV64 remain in powersave mode or similar when selecting a CV64 screenmode with Prefs/Screenmode, or is it "active", albeit with a black picture?


/Patrik

[patrik]

As I said earlier, it sounds very wierd that it should be a hardware issue, when it worked before the OS reinstall.

Anyhow, it is also very wierd that it wont work on your A4000T.

The fact that the CV64 is found working, and recognized by CyberGraphX (else no screenmodes would appear), suggests that if something is wrong, it must be a very minor fault.

The only hardware-issue the A4000T generally suffers from is that the powersupply connectors to the motherboard can overheat, so you should inspect these for burnmarks. If you wont find any, they are fine.

Some things you should try though are:
1. Do a "list LIBS:68#?" in a CLI and verify that 68040.library just is a few kB in size, much smaller than 68060.library.
2. Try another CPU-card. Don't forget to set the INT/EXT (should be marked with "I" and "E" and numbered J100 and J104) jumper-pair correctly, it depends on the CPU-card. C= A3640 (stock A4000 040) needs them set to EXT (E) and C= A3630 (stock A4000 030) needs them set to INT (I) for example.


/Patrik