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| From | "Morten W. Petersen" <morphex@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Linked lists, message passing |
| Date | 2015-07-05 22:39 +0200 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <mnc4ke$p61$1@speranza.aioe.org> (permalink) |
| References | (10 earlier) <mn89b4$kpb$1@speranza.aioe.org> <mn8as6$bgj$1@dont-email.me> <7o9gpa1isoir1he951j76jdc9185ohgejl@4ax.com> <mnbn5n$pgs$1@speranza.aioe.org> <bouipa58uspl6encmho5rg7ajnh1jvemq8@4ax.com> |
On 05.07.2015 21:30, Geoff wrote: > On Sun, 05 Jul 2015 18:49:47 +0200, "Morten W. Petersen" [...] >> As for building long-running things, 20 years is cool. Maybe my >> goal after building a simple CPU is to build a simple machine >> using just mechanical parts.. some day maybe, if I get the time. :) >> > > Yes, it was a fun project. 20+ years was more than I expected from a > wire-wrap layout but I am told the life expectancy of properly done > wirewrap connections is very long. IIRC, the clock was 4MHz on the Z80 > CPU. I drew the schematic on 1/4 inch ruled paper with a template and > pencil, there being no such thing as schematic capture at the time. It > was a DTMF controlled remote base and handled 4 radios. > > The successor, and much more ambitious design was done in Accel Tango > on a Pentium PC and was implemented on STD Bus with a card interfacing > each radio. A single Z80 CPU card ran up to 16 radio interfaces with > an audio cross-bar switch to allow co-located remote base operations. > The OS was a priority-scheduled real-time system with inter-task > messaging written in C with some assembler for the bit fiddling in > some of the I/O. The entire system fit into 8kB of EPROM and 32kB of > RAM. The plan was to upgrade it to Z180 but I ran out of energy when > the demands of the day job exceeded my capacity. I still have the Z180 > ICE I bought for the purpose. Like your mechanical project, maybe > someday... Hm, yes. I have a breadboard and some stash lying around, but after you mentioned wire-wrapping I looked up that and also found something called "fritzing". I think fritzing is the right place to start, then breadboard and then wire-wrapping when creating a more robust prototype. -Morten
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Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-19 05:49 +0200
Re: Linked lists, message passing Ike Naar <ike@iceland.freeshell.org> - 2015-06-19 06:51 +0000
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-19 09:08 +0200
Re: Linked lists, message passing Barry Schwarz <schwarzb@dqel.com> - 2015-06-19 02:08 -0700
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-19 14:11 +0200
Re: Linked lists, message passing raltbos@xs4all.nl (Richard Bos) - 2015-06-19 13:47 +0000
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-19 15:52 +0200
Re: Linked lists, message passing Robert Wessel <robertwessel2@yahoo.com> - 2015-06-19 22:07 -0500
Re: Linked lists, message passing raltbos@xs4all.nl (Richard Bos) - 2015-06-27 12:25 +0000
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-29 09:03 +0200
Re: Linked lists, message passing raltbos@xs4all.nl (Richard Bos) - 2015-07-03 17:28 +0000
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-07-03 22:16 +0200
Re: Linked lists, message passing Morris Dovey <mrdovey@iedu.com> - 2015-07-03 16:44 -0500
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-07-04 01:12 +0200
Re: Linked lists, message passing Morris Dovey <mrdovey@iedu.com> - 2015-07-03 18:50 -0500
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-07-04 09:39 +0200
Re: Linked lists, message passing Morris Dovey <mrdovey@iedu.com> - 2015-07-04 04:34 -0500
Re: Linked lists, message passing Bartc <bc@freeuk.com> - 2015-07-04 11:01 +0100
Re: Linked lists, message passing Geoff <geoff@invalid.invalid> - 2015-07-04 11:43 -0700
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-07-05 18:49 +0200
Re: Linked lists, message passing Geoff <geoff@invalid.invalid> - 2015-07-05 12:30 -0700
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-07-05 22:39 +0200
Re: Linked lists, message passing Geoff <geoff@invalid.invalid> - 2015-07-05 15:08 -0700
Re: Linked lists, message passing glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-06 01:05 +0000
Re: Linked lists, message passing Geoff <geoff@invalid.invalid> - 2015-07-05 23:55 -0700
Re: Linked lists, message passing "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-07-04 11:48 -0700
Re: Linked lists, message passing Morris Dovey <mrdovey@iedu.com> - 2015-07-03 18:51 -0500
Re: Linked lists, message passing G G <gdotone@gmail.com> - 2015-07-03 18:13 -0700
Re: Linked lists, message passing Richard Heathfield <rjh@cpax.org.uk> - 2015-06-19 08:12 +0100
Re: Linked lists, message passing "Morten W. Petersen" <morphex@gmail.com> - 2015-06-19 09:30 +0200
Re: Linked lists, message passing Richard Heathfield <rjh@cpax.org.uk> - 2015-06-19 08:59 +0100
Re: Linked lists, message passing Noob <root@127.0.0.1> - 2015-06-19 10:14 +0200
Re: Linked lists, message passing Richard Heathfield <rjh@cpax.org.uk> - 2015-06-19 09:40 +0100
Re: Linked lists, message passing Ian Collins <ian-news@hotmail.com> - 2015-06-20 15:14 +1200
Re: Linked lists, message passing jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-19 18:10 +0200
Re: Linked lists, message passing Richard Heathfield <rjh@cpax.org.uk> - 2015-06-19 17:32 +0100
Re: Linked lists, message passing Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-29 00:56 -0700
Re: Linked lists, message passing Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-29 00:49 -0700
Re: Linked lists, message passing Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 08:32 -0700
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