[LMH]Backpanel Layout

[ford@objs.com]

Daniel Seagraves wrote:

> Does this board layout look correct?
>
> SLOT    WHAT
> 0       CPU
> 1       8MB Memory Board
> 2       System Interface Board
> 3       NuBus Peripheral Interface (Is anything on this board other
>         than the SCSI control?)
> 4       LAN
>
> And if I add more memory, do I add it before the SIB, or after the LAN?

On an Explorer, the slots were normally ordered, from left to right, facing the front::

0) ethernet
1) option (e.g. DSP board (Odyssey) or color graphics processor)
2) NUPI
3) memory option
4) memory
5) SIB
6) Processor
7) Power Supply

but the boards in slots 0-2, and maybe 3, too, could be interchanged.  The
local bus ran from slots 6-4, or maybe 3.

In an Explorer II, there was no local bus, so the boards could be anywhere,
except that slots 6 & 7 were of a unique size with unique cooling, so the
processor & power supply went there.  You could put in 4 32MB memory
boards if you dropped the ethernet board.

Steve