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| n8vem-gg-archive:html-2011:nov:msg00172 [2022/07/19 15:24] – Initial import from Wayback Machine | n8vem-gg-archive:html-2011:nov:msg00172 [2026/06/15 12:05] (current) – external edit 127.0.0.1 | ||
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| + | /* Imported from Wayback Machine | ||
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| + | */ | ||
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| + | ---- | ||
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| + | [[[msg00029.html|Date Prev]]][[[msg00199.html|Date Next]]][[[msg00171.html|Thread Prev]]][[[msg00174.html|Thread Next]]][[[maillist.html# | ||
| + | |||
| + | ====== Re: AT/Everex versus DK/Intel witing for 2x5 serial headers on SBC boards. ====== | ||
| + | |||
| + | ---- | ||
| + | |||
| + | * //To//: N8VEM << | ||
| + | * // | ||
| + | * //From//: Sergey << | ||
| + | * //Date//: Wed, 9 Nov 2011 09:43:27 -0800 (PST) | ||
| + | * // | ||
| + | * // | ||
| + | * // | ||
| + | |||
| + | ---- | ||
| + | |||
| + | < | ||
| + | Hmm, actually N8VEM SBCs (Z80 V1, Z80 V2, SBC-188) use following pins | ||
| + | on serial port header: | ||
| + | 2 - DSR | ||
| + | 3 - RX | ||
| + | 4 - RTS (SBC V2 only, NC on others) | ||
| + | 5 - TX | ||
| + | 6 - CTS (SBC V2 only, NC on others) | ||
| + | 7 - DTR | ||
| + | 9 - GND | ||
| + | |||
| + | Which matches DTK/Intel pinout. And I am using a flat cable I made | ||
| + | using IDC connectors without any problems. | ||
| + | |||
| + | Thanks, | ||
| + | Sergey | ||
| + | |||
| + | On Nov 8, 5:07 pm, "G. Beat" < | ||
| + | > Andrew – | ||
| + | > | ||
| + | > After reading the N8VEM Single Board Computer (SBC) instruction manual | ||
| + | > and other documentation, | ||
| + | > I noticed the wiring method selected for the IDC10 2.54 mm pitch pin | ||
| + | > header on the SBC | ||
| + | > that is used for wiring a DE9 RS-232 COM connector (port). | ||
| + | > | ||
| + | > Did you know that there are TWO industry conventions for this 2x5 | ||
| + | > header (RS-232) serial port wiring?? | ||
| + | > | ||
| + | > The N8VEM SBC adopted the AT/Everex convention for that serial header.http:// | ||
| + | > | ||
| + | > The DTK/Intel convention is the other approach. | ||
| + | > This convention is used by Intel for its motherbaord headers and was | ||
| + | > used by Steve Ciarcia and Micromint | ||
| + | > for their computer boards in late 1980s/early 1990s. | ||
| + | > I prefer this approach -- because NO soldering is required.http:// | ||
| + | > | ||
| + | > You create the cable with two 3M IDC connectors (2x5 female header; | ||
| + | > male DE-9) | ||
| + | > Then you properly orient you ribbon cable (10 wire wide) using the red | ||
| + | > tracer for Pin 1 . | ||
| + | > | ||
| + | > Intel motherboard usage (D845, SS2400)http:// | ||
| + | > | ||
| + | > The current N8VEM ECB document should note this difference (or mark | ||
| + | > convention) | ||
| + | > for next revisions / board runs. The Intel ss4200 wiki graphics could | ||
| + | > be used for clarity. | ||
| + | > | ||
| + | > Greg Beat | ||
| + | > Chicago | ||
| + | </ | ||
| + | |||
| + | ---- | ||
| + | |||
| + | * **Follow-Ups**: | ||
| + | * **[[msg00174.html|Re: | ||
| + | * //From:// "G. Beat" < | ||
| + | * **[[msg00175.html|Re: | ||
| + | * //From:// "G. Beat" < | ||
| + | |||
| + | * **References**: | ||
| + | * **[[msg00171.html|AT/ | ||
| + | * //From:// "G. Beat" < | ||
| + | |||
| + | * Prev by Date: **[[msg00029.html|Re: | ||
| + | * Next by Date: **[[msg00199.html|Re: | ||
| + | * Previous by thread: **[[msg00171.html|AT/ | ||
| + | * Next by thread: **[[msg00174.html|Re: | ||
| + | * Index(es): | ||
| + | * [[maillist.html# | ||
| + | * [[threads.html# | ||
