a3000 vga port

[elpiloto]

hi,
i found a cheap a3000 that is in a very good shape, the psu was bad so im using a pc one, the a3000 works ok, but i pluged my lcd monitor into the vga connector of the a3000 and i cant see anything .... is there any jumper that must be moved to use the vga port?
with my old 1084s works perfectly

cheers
Hernan

[alexh]

There is the VGA out Enable/Disable switch on the back of the case (in between the VGA and Audio), but I'm sure you tried that already?

If it is a PAL A3000 you may need to switch to 60Hz (NTSC).

Many LCD's cannot handle the 50Hz output of a PAL A3000 VGA output.

[adolescent]

There is an enable/disable switch right next to the VGA port.  

[elpiloto]

yhea i tried that switch and the a3000 is on ntsc now, but still nothing  
 :madashell:  :crazy:

[adolescent]

Any battery damage?  Do you have another VGA CRT that you can try to make sure it isn't just a problem with the LCD?

[amigadave]

alexh wrote:
There is the VGA out Enable/Disable switch on the back of the case (in between the VGA and Audio), but I'm sure you tried that already?

If it is a PAL A3000 you may need to switch to 60Hz (NTSC).

Many LCD's cannot handle the 50Hz output of a PAL A3000 VGA output.

As alexh pointed out above, you may have to open up the case and change the jumper from a PAL display frequency to a NTSC display frequency as many LCD monitors can't cope with the 50hz refresh rate of the PAL frequency.  Also I hope you are not flipping the switch at the back while the Amiga is on.  I don't know if that can cause damage, but would not take the chance.

Good luck, A3000's are one of my favorite Amigas.

[AMC258]

You can and should flip the switch with the power on.  For this reason:  It's upside down from what you'd expect.  Enable is down, Disable is up.  So, try it both ways to make sure.  When I got my A3000UX, it had a blown fuse which was disabling the scandoubler.  Look for that.  Sorry, don't have the schematic handy.

[elpiloto]

hi all,
Thanks for the replys!!
As i sayed, i moved the jumper to NTSC mode, the psu of the a3000 is not the original from commodore, its a PC one (i dont know if the TIC signal have something to do with the vga port), i allready tryed with a crt monitor and i moved the switch that eneables the vga mode too and ..... nope, nothing on the screen.


oh by the way i have the original kickstart 2 disk, but i dont have the 1.3 for the A3000, is there any way to find it?
cheers
Hernan

[rkauer]

elpiloto wrote:
hi all,
Thanks for the replys!!
As i sayed, i moved the jumper to NTSC mode, the psu of the a3000 is not the original from commodore, its a PC one (i dont know if the TIC signal have something to do with the vga port), i allready tryed with a crt monitor and i moved the switch that eneables the vga mode too and ..... nope, nothing on the screen.

oh by the way i have the original kickstart 2 disk, but i dont have the 1.3 for the A3000, is there any way to find it?

 The tick signal have "almost" nothing to do with VGA signal (it is generated from the video frequency: Agnus PAL or NTSC).

 Check if the monitors you have can handle 50Hz of vertical frequency.

 Check your ROM (OK, not YOUR ROM, the A3000 one!) to see the version.

 1.4 ROM inside the A3000 means you need a super-kickstart disk or an HD with the rom image on devs: (more information about it over the net).

 1.3 ROM simply never exist in an A3000!

[elpiloto]

rkauer wrote:

elpiloto wrote:
hi all,
Thanks for the replys!!
As i sayed, i moved the jumper to NTSC mode, the psu of the a3000 is not the original from commodore, its a PC one (i dont know if the TIC signal have something to do with the vga port), i allready tryed with a crt monitor and i moved the switch that eneables the vga mode too and ..... nope, nothing on the screen.

oh by the way i have the original kickstart 2 disk, but i dont have the 1.3 for the A3000, is there any way to find it?

 The tick signal have "almost" nothing to do with VGA signal (it is generated from the video frequency: Agnus PAL or NTSC).

 Check if the monitors you have can handle 50Hz of vertical frequency.

 Check your ROM (OK, not YOUR ROM, the A3000 one!) to see the version.

 1.4 ROM inside the A3000 means you need a super-kickstart disk or an HD with the rom image on devs: (more information about it over the net).

 1.3 ROM simply never exist in an A3000!

but.......my a3000 when starts apear a kickstart menu, that says kisckstart 2.x hard disk or floppy and kickstart 1.3 hard drive and floppy, so i thin must be there some version of kickstart 1.3 for the a3000 ......

[rkauer]

elpiloto wrote:

but.......my a3000 when starts apear a kickstart menu, that says kisckstart 2.x hard disk or floppy and kickstart 1.3 hard drive and floppy, so I think must be there some version of kickstart 1.3 for the a3000 ......

 Maybe the last owner managed to use a kickstart switch in your A3000, but it never, ever had ROM 1.3 as standard.

 Anyway, using ROM 1.3 (35.xxx) don't gives access to the HD, so it is used for gaming purposes in floppy-based games and apps.

 More information over A3000 can be reached here.

 More about kickstarts here.

[rkauer]

 BTW quoting Amiga Hardware Database:

 Early A3000s have Kickstart 1.4 soft-boot ROM. It loads a ROM image (revision 2.04 or 3.1) from a bootable drive, reallocates memory with the 030's MMU and turns 512 kB Fast RAM into ROM. Kickstart 1.4 does not work with 040 or 060 processors because their MMU is different.

 Most A3000s shipped with Kickstart 2.04 ROM. Both versions can be replaced with a 3.0 or 3.1 one. The ROM timing circuit provides four different speed settings for output enable (90-345ns) and access timing (160-437ns).

 All A3000s shipped with DMAC 01 or 02, Ramsey 04 and Fat Buster 05, 06 or 07. Upgrading to DMAC 04 and Ramsey 07 solves many problems with some 040 processor cards, especially the A3640. Upgrading to Super Buster 11 enables Zorro III DMA which is required by some expansion cards, for example the A4091.

[elpiloto]

ok so i need the 1.4 image, any way to find it?

[Zac67]

There was no 1.4 ever released, it was only used as boot ROM for the Superkickstart machines (like yours). You'll need to put a Kick2.x or 3.x image where the boot ROM expects it; the A3k floppy set has some tool to read it from a Superkick disk, but you can use any image - A3k version needed.

I'm a bit in a hurry (going to work), hope that puts you on the right trail.  ;-)

[alexh]

elpiloto wrote:
As i sayed, i moved the jumper to NTSC mode

I am not sure that is enough, I think you must also change to NTSC in screen prefs?

but.......my a3000 when starts apear a kickstart menu, that says kisckstart 2.x hard disk or floppy and kickstart 1.3 hard drive and floppy, so i thin must be there some version of kickstart 1.3 for the a3000 ......

You DEFINITELY have kickstart 1.4 ROM chips inside your A3000.

This ROM allows you to load KS1.3 or KS2+ (including KS3.1) from hard drive or floppy drive.

There are official SuperKickstart (floppy) disks for KS1.3, KS2.04 and unofficial ones for KS3.1.

Do you have a hard drive? If you do then can forget about using floppy disks.

1)Rename your hard drive partition DEVICE NAME to WB_2.x (This must be done at the lowest level, not just change Icon name)

2)Copy the Superkickstart ROM image to your hard drive in the location DEVS:/kickstart

Where do I get a SuperKickstart 3.1 ROM image?

See your PM ;-)

For more information about making SuperKickstart floppy disks, and all thinks related to KS1.4 take a look here

http://aminet.net/package/util/misc/MakeSuperDisk