Differences

This shows you the differences between two versions of the page.

--- boards:ecb:backplane-505-6508:start [2018/11/24 15:32] – Initial import from Wayback Machine
+++ boards:ecb:backplane-505-6508:start [2026/06/15 12:14] (current) – external edit 127.0.0.1
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 /* Imported from Wayback Machine
    Original URL : https://www.retrobrewcomputers.org/doku.php?id=boards:ecb:backplane-505-6508:start
-   Snapshot date: 2018-11-24
+   Snapshot date: 2024-11-12
    Generator    : wayback-archiver
 */
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 ===== Introduction =====
-This is a 12-slot ECB backplane specifically designed to replace the backplane in the Siemens 505-6508 chassis unit, which can be readily obtained as a surplus item at a reasonable price. This give the builder the opportunity to place their ECB system inside a nice case.
+This is a 12-slot ECB backplane specifically designed to replace the backplane in the Siemens 505-6508 chassis unit, which can be readily obtained as a surplus item. This give the builder the opportunity to place their ECB system inside a nice case. Pictures on this page show version 1 whcih features different component placement and an on board regulator.
 ===== Hardware Documentation =====
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 [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:extbackplane6508-sch-002.pdf|Schematic: extbackplane6508-sch-002.pdf]]
-Manufacturing Files: {{[[lib:images:smileys:fixme.gif|FIXME}}]] Files were not part of old wiki {{[[lib:images:smileys:fixme.gif|FIXME}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:bkpl12-6508-002-gerber.zip|Manufacturing Files: bkpl12-6508-002-gerber.zip]]
-KiCAD Files: {{[[lib:images:smileys:fixme.gif|FIXME}}]] Files were not part of old wiki {{[[lib:images:smileys:fixme.gif|FIXME}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:bkpl12-6508-002-kicad.zip|KiCAD Files: bkpl12-6508-002-kicad.zip]]
 ===== Build Information =====
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 ==== Wiring Instructions ====
-EXTENDED BACKPLANE (12-SLOT) 6508 WIRING\\
-John Coffman (28-Jan-2014)
-!!! See the accompanying photo !!!
 yellow jumpers: install to complete the Interrupt and DMA priority chains. I omit them, since only Zilog Peripherals board uses them; no other N8VEM board does.
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 White rectangle: For all power connections, stuff these two components, C26 and C23.
-Using the 7805 regulator – unless you have all CMOS boards, no 1A regulator is going to be able to power 6-12 boards in this backplane. Even powering 4-8 boards, it will probably get burning hot. Use of a good heat sink on the 7805 regulator is recommended.
+===== Construction Notes/Suggestions =====
+Extended Backplane 12-slot rev. 1.0-002 23-Sep-2015 John Coffman <johninsd@gmail.com>
+The 12-slot backplane may be used stand-alone or with the Siemens 505-6508 chassis. If used stand-alone, say, mounted to a plywood backing, support should be provided at both ends of each of the DIN 41612 connectors.
+The RESET switch and 2-pin connector should not be used with older N8VEM boards which do not support the Kontron-compatible RESET operation. If the RESET switch or connector is used, then all boards should be set for “Kontron-compatible” RESET function.
+Suggested LED colors are : RED for +5v on power input; GREEN for +5v power switch ON; YELLOW for +12v on power input. The +12v is not connected to any pin on any of the 96-pin DIN 41612 sockets. The 1K current limiting resistor on the Yellow LED may be increased to as much as 4.7K to restrict the brightness of the Yellow LED. I suggest you try a couple resistor values to achieve brightness comparable to the Red and Green LED's.
+Additional decoupling is strongly recommended. Electrolytic caps chosen for their small size, in the range 100-470uF should be substituted for about 6-8 of the 0.1uF caps, both above and below the line of DIN connectors. The board is not marked for polarity, so be very careful to orient them correctly. Suggest use 6-8 x 220uF.
+Female 96-pin DIN 41612 connectors to use: (“x” denotes pin finish, gold or nickel) AMP 535090-x 0.130” short pins – best for this 12-slot (1/16” board thickness) AMP 535043-x 0.180” long pins (suit 8-slot backplane 1/8” board thickness) Either connector may be used with either backplane, but the long pins are unnecessary on the 12-slot backplane.
+Not all connector positions need be filled. Boards in the process of debugging will likely be inserted spaced farther apart.
-[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:photos:extbkpln-6508-wiring-img_0423.jpg|{{boards:ecb:backplane-505-6508:photos:extbkpln-6508-wiring-img_0423.jpg?640}}]]
+The 8-slot backplane uses 3/8” 4-40 pan-head screws & nuts (optional). The 12-slot backplane is 1/16” thinner, so a shorter screw may be used. The 96 solder positions make the use of nuts & bolts optional. (Metric size M2.5, of similar length.)
-===== Builder's Notes/Comments =====
+RetroBrew boards that plug into the Backplanes may use the following connector, or others: AMP 650913-x right angle, male connector.
-Please use this space to add any notes/comments on this board that don't fit into the above sections. (Periodically, these comments may be re-arranged to be better incorporated into a new revision of the wiki page.) Please sign your comments using the wiki “Insert Signature” feature! — //[[mailto:admin@retrobrewcomputers.org|Andrew Bingham]] 2016/02/27 13:01//
+I recommend this connector because it has tabs that may be soldered to the board mounting holes for physical stability. It does not need M3 or 4-40 hardware to solidly anchor it to the board.
 ===== Photo Gallery =====
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+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:545-8101-2.pdf|545-8101-2.pdf]]
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+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:bkpl12-6508-002-gerber.zip|bkpl12-6508-002-gerber.zip]]
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+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:bkpl12-6508-002-kicad.zip|bkpl12-6508-002-kicad.zip]]
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 [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:backplane-505-6508:extbackplane6508-brd-002.pdf|extbackplane6508-brd-002.pdf]]
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