28 Sep
2003
28 Sep
'03
8:08 a.m.
not sure if it's on-topic here, but anyway...
i have an ISA board marked 'Sanyo LAT-200A'. it contains
amd286 cpu, couple of headland chips, four SIMM sockets,
and two (even/odd) empty bios sockets. does anybody know
what it is, where to find bios images and how to use it?
28 Sep
28 Sep
10:24 a.m.
On Sun, 28 Sep 2003, trashcan man wrote:
not sure if it's on-topic here, but anyway...
i have an ISA board marked 'Sanyo LAT-200A'. it contains amd286 cpu,
couple of headland chips, four SIMM sockets, and two (even/odd) empty
bios sockets. does anybody know what it is, where to find bios images
and how to use it?
Sounds like a single board computer for a passive backplane. Finding a
BIOS probably isn't gonna be easy. You may be able to get it from the
company that made the board, or you might be able to copy the BIOS from a
286 motherboard that uses the exact same chipset.
Are there any markings on the board? What chipset does it use?
-Toth
9:51 p.m.
On Sun, Sep 28, 2003 at 05:24:36PM -0500, Tothwolf wrote:
hm. markings? besides 'Sanyo LAT-200A' there is '2EC4BIPB32100
revision 2' ('I' or '1', don't know). chipset is made by
Headland
Technology, three IC's are marked as: HT101A/B14A4924, GC113-PC
and HT102/B1A4000. there are also two sanyo chips: PH80C42A
and MB622160/16LT-DUAL.
what 'passive backplane' should do? provide power from PSU?
what will happen if i stick this into a normal pc?
not sure if
it's on-topic here, but anyway...
i have an ISA board marked 'Sanyo LAT-200A'. it contains amd286 cpu,
couple of headland chips, four SIMM sockets, and two (even/odd) empty
bios sockets. does anybody know what it is, where to find bios images
and how to use it?
Sounds like a single board computer for a passive backplane. Finding a
BIOS probably isn't gonna be easy. You may be able to get it from the
company that made the board, or you might be able to copy the BIOS from a
286 motherboard that uses the exact same chipset.
Are there any markings on the board? What chipset does it use? 
29 Sep
29 Sep
3:46 a.m.
what 'passive backplane' should do? provide
power from PSU?
what will happen if i stick this into a normal pc?
A passive backplan can be considered a bus, i.e. the bus interconnecting all
controllers. I have e.g. the parts for an ACER500D, which had 1 card with
CPU/memory/floppy disk/comport and printerport, one card for the video, etc.
If you stick it into a normal pc, you will have a disaster.
Nico
8:11 a.m.
At 05:46 PM 9/29/03 +0200, you wrote:
> what 'passive backplane' should do?
There's no active components on the "backplane". OK there mayu be a few
LEDs of something to show presense of power but no vital components vital
to the system. The S-100 backplanes are a good example. The CPU, system
memory, video circuits, I/O ports etc are all on plug in cards.
> provide power from PSU?
Usually but not always.
> what will happen if i stick this into a normal pc?
Both CPUs (and bus drivers, clocks, etc) will try to drive the buss
simultanously and one of them will lose in a spectacular way!
Joe
30 Sep
30 Sep
12:12 a.m.
On Mon, Sep 29, 2003 at 04:11:45PM -0400, Joe wrote:
ok, but can i safely assume that connector between this board
and backplane is a normal ISA bus and stick it into a strange ISA...
hm, splitter? (don't know the proper word, it has one male ISA edge
connector, two female ISA sockets and three decoupling capacitors)
with wires from PSU connected to the proper bus pins?
> what
'passive backplane' should do?
There's no active components on the "backplane". OK there mayu be a few
LEDs of something to show presense of power but no vital components vital
to the system. The S-100 backplanes are a good example. The CPU, system
memory, video circuits, I/O ports etc are all on plug in cards.
1:53 a.m.
There's
no active components on the "backplane". OK there mayu be a few
LEDs of something to show presense of power but no vital components vital
to the system. The S-100 backplanes are a good example. The CPU, system
memory, video circuits, I/O ports etc are all on plug in cards.
ok, but can i safely assume that connector between this board
and backplane is a normal ISA bus and stick it into a strange ISA...
hm, splitter? (don't know the proper word, it has one male ISA edge
connector, two female ISA sockets and three decoupling capacitors)
with wires from PSU connected to the proper bus pins?
9:20 a.m.
At 02:12 PM 9/30/03 +0200, you wrote:
On Mon, Sep 29, 2003 at 04:11:45PM -0400, Joe wrote:
ok, but can i safely assume that connector between this board
and backplane is a normal ISA bus and stick it into a strange ISA...
Yes you can assume that it's a standard ISA connector if it looks ike
one. There are some cards that have an extra connector but those will be
obvious.* BUT even if it has a standard ISA connector you can not just plug
it into a standard motherboard that already has CPU and memory. If you do,
you will be connecting the outputs of the memory, CPU etc on one board to
the outputs of memory, CPU etc of the other board. If any of the outputs
are not in the same logic state (hi or Lo), and it's a near certainty that
they're not, then they will try to force the other outputs and WILL burn up
something. I didn't see the first part of this thread so I don't know the
details of the card that you have. If it's a CPU or memory card, don't try
to use it in a computer with a motherboard! If it's an I/O card then it's
probably safe to use with a motherboard.
> what
'passive backplane' should do?
There's no active components on the "backplane". OK there mayu be a few
LEDs of something to show presense of power but no vital components vital
to the system. The S-100 backplanes are a good example. The CPU, system
memory, video circuits, I/O ports etc are all on plug in cards. hm, splitter? (don't know the proper word, it has
one male ISA edge
connector, two female ISA sockets and three decoupling capacitors)
with wires from PSU connected to the proper bus pins?
In the PC industry those are usually called riser cards. They plug into
the motherboard and stick up and you can plug several standard PC cards
into them. The PC cards will then lay parallel to the motherboard instead
of perpendicular as in the orginal PCs. That style system is called NTX.
But to answer your question, yes you can make you own passive backplane
using a riser card. Some backplanes have the keyboard and reset signals
routed through them but most of the CPU cards for those systems can get the
keyboard signals via the backplane or through some kind of wiring adapater
that runs directly from the CPU card to the keyboard port in the case.
BTW where are you located? I have some extra backplanes here (Florida).
I can probably send you one.
*FWIW a lot of the passive backplane systems use cards with an extra
connector similar to the old VLB cards. They call it PICMIG. I don't know
the details of it.
Joe
12:25 p.m.
*FWIW a lot of the passive backplane systems use
cards with an extra
connector similar to the old VLB cards. They call it PICMIG. I don't know
the details of it.
It's the PCI extension.
PICMIG = PCI Industrial Computer Manufacturers Group
a consortium of over 500 individual industrial computer product vendors
established
in 1994. Its' mission is to extend the PCI standard, as approved by the PCI
Special
Interest Group (PCI SIG), for computer systems such as passive backplane
PCI/ISA
and the CompactPCI Eurocard form factor.
http://www.trentonprocessors.com/support/picmg.html
At 05:20 PM 9/30/03 -0400, you wrote:
At 02:12 PM 9/30/03 +0200, you wrote:
On Mon, Sep 29, 2003 at 04:11:45PM -0400, Joe
wrote:
ok, but can i safely assume that connector between this board
and backplane is a normal ISA bus and stick it into a strange ISA...
Yes you can assume that it's a standard ISA connector if it looks ike
one. There are some cards that have an extra connector but those will be
obvious.* BUT even if it has a standard ISA connector you can not just plug
it into a standard motherboard that already has CPU and memory. If you do,
you will be connecting the outputs of the memory, CPU etc on one board to
the outputs of memory, CPU etc of the other board. If any of the outputs
are not in the same logic state (hi or Lo), and it's a near certainty that
they're not, then they will try to force the other outputs and WILL burn up
something. I didn't see the first part of this thread so I don't know the
details of the card that you have. If it's a CPU or memory card, don't try
to use it in a computer with a motherboard! If it's an I/O card then it's
probably safe to use with a motherboard.
> what
'passive backplane' should do?
There's no active components on the "backplane". OK there mayu be a few
LEDs of something to show presense of power but no vital components vital
to the system. The S-100 backplanes are a good example. The CPU, system
memory, video circuits, I/O ports etc are all on plug in cards. hm, splitter? (don't know the proper word, it
has one male ISA edge
connector, two female ISA sockets and three decoupling capacitors)
with wires from PSU connected to the proper bus pins?
In the PC industry those are usually called riser cards. They plug into
the motherboard and stick up and you can plug several standard PC cards
into them. The PC cards will then lay parallel to the motherboard instead
of perpendicular as in the orginal PCs. That style system is called NTX.
But to answer your question, yes you can make you own passive backplane
using a riser card. Some backplanes have the keyboard and reset signals
routed through them but most of the CPU cards for those systems can get the
keyboard signals via the backplane or through some kind of wiring adapater
that runs directly from the CPU card to the keyboard port in the case.
BTW where are you located? I have some extra backplanes here (Florida).
I can probably send you one.
*FWIW a lot of the passive backplane systems use cards with an extra
connector similar to the old VLB cards. They call it PICMIG. I don't know
the details of it.
Joe
>
>
4 Oct
4 Oct
7:32 a.m.
thanks for info, everyone. :-)
On Tue, Sep 30, 2003 at 05:20:29PM -0400, Joe wrote:
[..]
obvious.* BUT even if it has a standard ISA connector
you can not just plug
it into a standard motherboard that already has CPU and memory. If you do,
you will be connecting the outputs of the memory, CPU etc on one board to
the outputs of memory, CPU etc of the other board. If any of the outputs
are not in the same logic state (hi or Lo), and it's a near certainty that
they're not, then they will try to force the other outputs and WILL burn up
something. [..]
that's bad. this hardware went through hands of _very_
incompetent people.
details of the card that you have. If it's a CPU
or memory card, don't try
to use it in a computer with a motherboard! If it's an I/O card then it's
probably safe to use with a motherboard.
it's 'all in one' - cpu, memory, i/o.
[..]
BTW where are you located? I have some extra
backplanes here (Florida).
I can probably send you one.
thanks, but it's not a good idea. first, as noted above, i doubt
if it's working; i'll try to power it up anyway, when i have some
more time. second, transport to poland would cost too much; one
can find this kind of equipment relatively easily, and passive
thing seems hard to fry, anyway.
7519
days inactive
7525
days old
9 comments
5 participants
participants (5)
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mail.list＠analog-and-digital-solutions.com -
nico＠farumdata.dk -
rigdonj＠cfl.rr.com -
tothwolf＠concentric.net -
trash_tmp＠poczta.onet.pl