Which SCSI to use on A2000 ?

[orcish75]

Hi Dougal,

I have a very similar setup to yours, except I have an '030 GVP accelerator. If you want to use 68000 mode then you'll have to use the SCSI on the GVP HC+8 as you can't use the memory or the SCSI controller on the '040 board in 68000 mode.

If you're never going to use the 68000 mode then remove the HC+8 card and use the SCSI on the '040 card, it is a lot faster than using the HC+8 card as it DMA's directly into 32-bit RAM.

If you do want to use the 68000 mode, then you'll have to set the RAM on your '040 card to high, outside of the Zorro II space otherwise you'll get a conflict. It took me while to get my setup running nicely in this configuration so let me know if you do want to do this and I'll give you some tips.

Cheers

[orcish75]

Definitely sounds like a memory conflict. I'm not sure which jumper on the '040 board sets the memory to extended (outside the zorro II space) on my '030 GVP board I think it was jumper 12. I'll check when I get home tonight and let you know.

I have been checking the net for any info but haven't come across anything yet. This site has some jumper settings for the '040 card but not all unfortunately. http://www.l8r.net/install/technical.shtml

Cheers

[orcish75]

Yup, the 16MB on the '040 card will always be 32-bit, but the 32-bit RAM can also reside in the 8MB Zorro II space. The jumper setting on the '040 card will move the 16MB 32-bit ram above the Zorro II space so that it doesn't conflict with the ram on the HC+8 card. The RAM on the HC+8 can only ever reside in the Zorro II space.

Did you get a manual with your '040 card? If so, it should have the jumper setting to move the 32-bit RAM to be extended RAM (above the Zorro II space)

Cheers

[orcish75]

Hmm, OK, then perhaps the '040 only has 4MB ram in the Zorro II space and the rest as extended. Set the jumpers on your HC+8 to 2MB RAM and let's see if the A2000 boots properly.

Cheers