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| From | pH <wNOSPAMp@gmail.org> |
|---|---|
| Newsgroups | comp.os.cpm |
| Subject | Re: The ideal standalone Z80-based retro computer |
| Date | 2023-09-07 16:03 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <udcs8c$31t2h$1@dont-email.me> (permalink) |
| References | <0b23887c-d521-4424-8e62-8758cb92c763n@googlegroups.com> <72829363-c906-4557-ac1c-50a925bc1639n@googlegroups.com> <uc25h5$2chfn$1@dont-email.me> <udbhal$3qm$1@reader2.panix.com> <udc4kl$2udp3$1@dont-email.me> |
On 2023-09-07, dxforth <dxforth@gmail.com> wrote: > On 7/09/2023 1:50 pm, Jeff Jonas wrote: >>> Let's not forget the Z80 itself was a new processor >>> built upon an old design and became popular for that reason. >> >> Yes, no, kinda, maybe? >> 8080 compatibility definitely helped on the software side, >> running CP/M and such. >> >> But the Z80's hardware was tremendously easier to use, >> almost like silicon-chip Lego, thus becoming the favorite for embedded systems >> such as "smart modems", SCSI controllers, terminal servers. >> In a way, the Z80 peripherals were "the tail wagging the dog" >> because they were so popular, particularly the SIO dual-channel serial I/O chips. >> >> Z80 hardware features: >> >> +5 volts only, no +/- 12v >> >> single phase clock: no special clock generator required >> >> Z80 native peripheral chips self-arbitrated DMA and vectored interrupts via daisy-chain. >> No interrupt controller required. >> >> built in dram refresh cycle, making RAM interfacing easier. >> >> The Z80 signals were so direct and easy to use >> that they formed the basis of the STD bus (which was later extended). >> >> I/O address space was separate from the 64k memory address space >> due to IN, OUT instructions asserting the /IORQ signal instead of /MREQ >> >> and other things :-) > > I worked in telecom. Equipment originating from Europe (Siemens) tended to > use the 8085 while the Japanese (Ando) used the Z80. So not a great deal > of difference between them in that market. Unlike Zilog, Intel appears > to have lost interest in the 8080 line. I wasn't aware the 8085's 'undoc' > instructions were actually new instructions which Intel, in their wisdom, > chose to disown. What about Steve Ciarcia's (sp?) SB180 single board computer as featured in Byte Magazine (before it's demise). He had a column called "Circuit Cellar", I think. As I recall, though, it used a Hitachi chip of some sort rather than a Z80. Well, CP/M faded from the scene far too early in my opinion, but I still use jstar to satisfy my WordStar finger memory from thsoe days. pH in Aptos
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The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-07-25 02:30 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-07-25 04:39 -0700
Re: The ideal standalone Z80-based retro computer Phil G <philg@talk21.com> - 2023-07-25 06:18 -0700
Re: The ideal standalone Z80-based retro computer Phil G <philg@talk21.com> - 2023-07-25 06:48 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-07-25 07:10 -0700
Re: The ideal standalone Z80-based retro computer Douglas Miller <durgadas311@gmail.com> - 2023-07-25 07:20 -0700
Re: The ideal standalone Z80-based retro computer Roger Hanscom <norwestrzh@gmail.com> - 2023-07-25 11:05 -0700
Re: The ideal standalone Z80-based retro computer Bozo User <anthk@disroot.org> - 2023-07-30 18:53 +0000
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-07-31 00:11 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-11 05:26 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-12 00:16 -0700
Re: The ideal standalone Z80-based retro computer Bozo User <anthk@disroot.org> - 2024-04-05 22:00 +0000
Re: The ideal standalone Z80-based retro computer Douglas Miller <durgadas311@gmail.com> - 2023-07-25 07:11 -0700
Re: The ideal standalone Z80-based retro computer Adam Sampson <ats@offog.org> - 2023-07-25 19:34 +0100
Re: The ideal standalone Z80-based retro computer Udo Munk <udo.munk@freenet.de> - 2023-07-25 12:39 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-07-25 23:05 -0700
Re: The ideal standalone Z80-based retro computer yeti <yeti@tilde.institute> - 2023-07-28 05:01 +0000
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-19 10:47 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-19 22:02 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-20 01:19 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-20 11:36 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-20 12:40 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-20 13:03 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-21 00:08 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-21 01:03 -0700
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-21 03:01 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-21 03:11 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-21 20:31 +1000
Re: The ideal standalone Z80-based retro computer ladislau szilagyi <ladislau_szilagyi@euroqst.ro> - 2023-08-21 05:09 -0700
Re: The ideal standalone Z80-based retro computer Tadeusz Pycio <tapy@wp.pl> - 2023-08-22 02:34 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-22 21:17 +1000
Re: The ideal standalone Z80-based retro computer Tadeusz Pycio <tapy@wp.pl> - 2023-08-22 04:44 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-22 05:23 -0700
Re: The ideal standalone Z80-based retro computer Tadeusz Pycio <tapy@wp.pl> - 2023-08-22 05:56 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-22 06:07 -0700
Re: The ideal standalone Z80-based retro computer "rwd...@gmail.com" <rwdeane@gmail.com> - 2023-08-22 10:00 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-23 03:36 +1000
Re: The ideal standalone Z80-based retro computer Tadeusz Pycio <tapy@wp.pl> - 2023-08-22 11:41 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-23 16:10 +1000
Re: The ideal standalone Z80-based retro computer Chris Syntichakis <csynt8bit@gmail.com> - 2023-08-24 23:37 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-25 20:39 +1000
Re: The ideal standalone Z80-based retro computer Chris Syntichakis <csynt8bit@gmail.com> - 2023-08-26 00:29 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-27 08:48 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-28 21:35 +1000
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-24 11:51 -0700
Re: The ideal standalone Z80-based retro computer "fridtjof.ma...@gmail.com" <fridtjof.martin.weigel@gmail.com> - 2023-08-26 09:40 -0700
Re: The ideal standalone Z80-based retro computer Roger Hanscom <norwestrzh@gmail.com> - 2023-08-26 14:39 -0700
Re: The ideal standalone Z80-based retro computer Zbig <zbigniew2011@gmail.com> - 2023-08-26 16:03 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-08-27 12:20 +1000
Re: The ideal standalone Z80-based retro computer Greg Holdren <greg.holdren@gmail.com> - 2023-08-26 18:52 -0700
Re: The ideal standalone Z80-based retro computer jeffj@panix.com (Jeff Jonas) - 2023-09-07 03:47 +0000
Re: The ideal standalone Z80-based retro computer jeffj@panix.com (Jeff Jonas) - 2023-09-07 03:50 +0000
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-09-07 19:20 +1000
Re: The ideal standalone Z80-based retro computer pH <wNOSPAMp@gmail.org> - 2023-09-07 16:03 +0000
Re: The ideal standalone Z80-based retro computer yeti <yeti@tilde.institute> - 2023-09-07 18:03 +0000
Re: The ideal standalone Z80-based retro computer pH <wNOSPAMp@gmail.org> - 2023-09-08 21:29 +0000
Re: The ideal standalone Z80-based retro computer Roger Hanscom <norwestrzh@gmail.com> - 2023-09-08 08:51 -0700
Re: The ideal standalone Z80-based retro computer pH <wNOSPAMp@gmail.org> - 2023-09-08 21:31 +0000
Re: The ideal standalone Z80-based retro computer Bill McMullen <mcmullenbill0@gmail.com> - 2023-09-08 16:47 -0700
Re: The ideal standalone Z80-based retro computer "mrgcm...@gmail.com" <mrgcms2001@gmail.com> - 2023-09-19 08:35 -0700
Re: The ideal standalone Z80-based retro computer pH <wNOSPAMp@gmail.org> - 2023-09-20 03:04 +0000
Re: The ideal standalone Z80-based retro computer "pbi...@gmail.com" <pbirkel@gmail.com> - 2023-09-19 23:22 -0700
Re: The ideal standalone Z80-based retro computer "mrgcm...@gmail.com" <mrgcms2001@gmail.com> - 2023-09-20 12:51 -0700
Re: The ideal standalone Z80-based retro computer dxforth <dxforth@gmail.com> - 2023-09-09 10:34 +1000
Re: The ideal standalone Z80-based retro computer andrei-n <andrei.nesterov@gmail.com> - 2023-08-29 09:08 -0700
Re: The ideal standalone Z80-based retro computer yeti <yeti@tilde.institute> - 2023-08-29 16:29 +0000
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