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--- n8vem-gg-archive:html-2011:may:msg00153 [2025/11/30 00:55] – Initial import from Wayback Machine
+++ n8vem-gg-archive:html-2011:may:msg00153 [2026/06/15 12:05] (current) – external edit 127.0.0.1
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+/* Imported from Wayback Machine
+   Original URL : https://www.retrobrewcomputers.org/n8vem-gg-archive/html-2011/May/msg00153.html
+   Snapshot date: 2025-11-30
+   Generator    : wayback-archiver
+*/
+----
+[[[msg00179.html|Date Prev]]][[[msg00187.html|Date Next]]][[[msg00181.html|Thread Prev]]][[[msg00151.html|Thread Next]]][[[maillist.html#00153|Date Index]]][[[threads.html#00153|Thread Index]]]
+====== EDM-80 a Z80 project board ======
+----
+  * //To//: N8VEM <<n8...@googlegroups.com>>
+  * //Subject//: EDM-80 a Z80 project board
+  * //From//: Zilog_RatsNest <<esch...@pcrescue101.com>>
+  * //Date//: Fri, 6 May 2011 11:44:09 -0700 (PDT)
+  * //User-agent//: G2/1.0
+----
+<code>
+Sorry if this is a bit off-subject ... I could use a hand with this
+Z80 based SBC - I've been trying for over 6 Months to gather
+additional information.
+It is called an EDM-80.  Initially my take on it is an "Educational
+Development Module" used for courses in Computer Science classes.
+It is a Z80 based SBC w/several edge connectors supporting the Bus &
+Parallel Ports and has a full 25 pin RS-232 connector on board.
+CURRENTLY it does not work properly - I am working on a "TEST BIOS"
+for it.  So far I can get it to access the ports and spit out some
+useful data to prove the board is OK.
+I can only assume the original BIOS it came with has a problem.  The
+serial port just keeps spitting out garbage like it was stuck in a
+loop.  My logic analyzer seems to support my initial findings.
+It is powered by a single +5vdc @ 800-1200ma (a single 7805 regulator
+won't work long)
+I would like to acquire more information on this particular SBC and
+any ADD-ON components and software (ROM code) it might have originally
+come with.
+So far ... the information I have developed from the hardware
+documentation and the EPROM state it might have a video controller
+board and runs as a smart terminal (for a lack of better words).  The
+ports are addressed similar to a CP/M style system.
+Anyone hear of this unit?
+Thanks for your consideration,
+Ed
+</code>
+----
+  * **Follow-Ups**:
+    * **[[msg00151.html|RE: [N8VEM: 9838] EDM-80 a Z80 project board]]**
+      * //From:// "Andrew Lynch" <lyn...@yahoo.com>
+  * Prev by Date: **[[msg00179.html|Re: SBC V2 Build Successful, BIOS Question]]**
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+  * Previous by thread: **[[msg00181.html|Re: SBC V2 Build Successful, BIOS Question]]**
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+  * Index(es):
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+    * [[threads.html#00153|**Thread**]]