Re: Blizzard MapROM jumper

[Ruben van Staveren <ruben%luna.net@localhost>]

On Mon, Dec 14, 1998 at 11:22:16AM +0200, Laurent Papier wrote:
> Hi,
> I just wonder how NetBSD support the Blizzard MaprOM jumper.
> On Blizzard board with MapROM jumper on, the hardware automaticaly
> copy the ROM in 512Ko of 32 bits FastRAM.
> Is NetBSD aware of those 512Ko ?
> 

NetBSD 1.3.2 (ENTERPRISE) #0: Sun Jul 19 22:14:25 CEST 1998
    
ruben%enterprise.verweg.com@localhost:/ZIP/usr/src/sys/arch/amiga/compile/ENTERPRISE
Amiga 1200 (68060 rev.1 CPU/MMU/FPU)
real  mem = 49807360 (6080 pages)
avail mem = 45326336 (5533 pages)
using 316 buffers containing 2588672 bytes of memory
memory segment 0 at 66000000 size 2f80000
memory segment 1 at 0 size 200000


perl -e 'print 0x2f80000;' -> 49807360

I have 48mb of fast installed:

expr \( \( 16 + 32 \) \* 1024 \* 1024 \) - 49807360

524288

Well, there is your proof, the maprom jumper just chops of 512K of your memory:
That is how the blizzard works. 

Nothing to do about it, and with memory prices dead cheap, it should not be your
concern :)


More important is to add new support for exotic hardware, like PCMCIA ethernet
drivers. at least to me.

Regards,
        Ruben


-- 
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