Blizzard 1230 board - Jumpers and libs

[Hodgkinson]

Hi there,
Does anyone know what the jumper positions on a Blizzard 1230 MK-IV correspond to? For some odd reason the previous owner of the Blizzard 1230 board that I now have (68030+68882+64MB RAM) has somehow disabled the MMU, and I’m wondering whether closing the pair of jumper pins furthest away from the edge of the CPU (As they currently are) might cause this?
Should the card normally have no jumper links closed for normal operation with a 64MB RAM and 68882?

Also, I’m thinking of transferring this card to a different A1200. Are there any special libraries that are required for the 68030/68882/the 64MB of RAM to function at their best?

EDIT - Its a Phase 5 board, btw.

One last question – Any idea what the  "8MB RAM" jumper on a Blizzard 1200/4 RAM board supposed to do? I thought this board only had 4MB of RAM? Would it be for an add-on RAM card?

Thanks,
Hodgkinson.

[Hodgkinson]

Hmmm. Thanks for the site!

Sysinfo reports the MMU as "not in use" or somthing like that. Hence im wondering wether it could of been one of the jumper links - But the jumper pair I have just mentioned relates to the RAMSPEED according to the manual.

I think i'll just go and try removing it and see what happens.

Hodgkinson.

[Hodgkinson]

No difference. Sigh.
Sysinfo does report the MMU as "NOT IN USE".

Any idea wether a 6860 Zorro bus board might have a function for disabling the MMU by some means, or if OS3.0 might happen to not support MMUs? (Now im guessing...)

Thanks,
Hodgkinson.

[Hodgkinson]

Hmmm...(Again)...
Dont you need a MMU for your PCMCIA port to work correctly when >4MB of RAM is installed?
Im wondering wether the MMU "Not in use" might explain why the PCMCIA port on the tower is being crippled. Shouldn't the MMU remap the memory to prevent this from happening?

Oh, btw, re the Sysinfo screen shot - Yes, the FPU status appears just as it is shown (Not sure about other properties or the second screen shot, though).

Hodgkinson.

[Hodgkinson]

What if the 64MB of memory is on the accelerator board? Could the MMU (In the 68030 on the same board) sort it out???


Thanks for all the replies,
Hodgkinson.

[Hodgkinson]

The Blizzard board that I have IS a Phase 5 board - I've just checked.

Thanks,
Hodgkinson.

Could somthing on the board be faulty?

[Hodgkinson]

The mobo's fine too, I dismantled the tower to change the mobo and there was no difference.

I can only assume that there might be a jumper that needs setting on the 6860 PCI board (Or the accelerator's got a problem - I mean the Blizzard 1230 board here...). Anyone know where there might be info for the jumper settings on the 6860 board?

Hodgkinson.

[Hodgkinson]

the 6860 PCI board...
Yeah, just making sure that everyone knew which board I was on about (Its sometimes called this on hardware databases).

Sounds like i'll have to take the accel board and put it into my basic garage A1200 and see what happens to the PCMCIA port and networking.

Thanks again,
Hodgkinson.

[Hodgkinson]

I’m back!

I tried the '030 68882 64MB board in my garage A1200 and it works fine. Card prep can see and prep a 1MB SRAM card as disk, which can then be formatted without errors.
Must be something to do with the 6860 board in the A1200T causing the PCMCIA issue (The other common point here is the right-angled PCMCIA adaptor that I use in my tower, but I've had it out and re-soldered all of the connections - I might of laid the tower on its side and unscrewed the base once to insert the SRAM card directly just to make sure - Btw Its a Micronik tower).
Oh, and the MMU is still displayed as "NOT IN USE" under Sysinfo on the garage A1200 WB3.0.

Since I use my garage A1200 for all the serious stuff and the A1200T for games, I might just leave the '030 board in the garage A1200. Gives a real boost to emulation programs, too (Anyone want to comment on this decision...?)

Thanks for all your help,
Hodgkinson.