a3000 vga port

[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!

[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.