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Old 07-29-2007, 02:16 AM
Alan Norton
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Default Did Someone Say Z80? Hardware From the 70's

Here is a system from the 70's.

The Northstar Horizon S100 Bus Z80 Processor Microcomputer

The S100 Boards - 16 KB RAM, 8 bit 4 MHz Z80A Zilog Processor, Floating
Point Math, and Micro Disk Controller Boards

The Micro-Term Monitor and Keyboard

The Comrex Letter Quality Daisy Wheel Parallel Printer

The IP225 Dot Matrix Serial Impact Printer

http://www.pecos-softwareworks.com/n...r_horizon.html

--
Alan Norton - Pecos SoftWareWorks
Review of Foxconn 975X7AB-8EKRS2H Mb, IT Articles
Vista EULA's explained, building your first computer - ABIT AN8 SLI
http://www.pecos-softwareworks.com/



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Old 07-31-2007, 09:07 PM
Trimble Bracegirdle
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Default Re: Did Someone Say Z80? Hardware From the 70's

Ahhh ! those were the proper computing days..
But the Z80 was 16 bit (just sort of) not 8 .
(\__/)
(='.'=)
(")_(") mouse



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Old 08-01-2007, 02:11 AM
Ken Maltby
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Default Re: Did Someone Say Z80? Hardware From the 70's


"Trimble Bracegirdle" <no-spam@never.spam> wrote in message
news:46afa47d$1_1@mk-nntp-2.news.uk.tiscali.com...
> Ahhh ! those were the proper computing days..
> But the Z80 was 16 bit (just sort of) not 8 .
> (\__/)
> (='.'=)
> (")_(") mouse
>


QX-10 and Valdocs, have two of them in my attic next
to boxes of TRS-80 parts.

Luck;
Ken



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Old 08-01-2007, 03:56 AM
Pecos
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Default Re: Did Someone Say Z80? Hardware From the 70's

"Trimble Bracegirdle" <no-spam@never.spam> wrote in news:46afa47d$1_1@mk-
nntp-2.news.uk.tiscali.com:

> Ahhh ! those were the proper computing days..
> But the Z80 was 16 bit (just sort of) not 8 .
> (\__/)
> (='.'=)
> (")_(") mouse
>


Ahhh yes. Fun to be a programmer back then. Life was so much simpler.

I don't pretend to be any sort of expert on the hardware end. I
fortunately have all the manuals (I don't understand them fully, but I have
them).

Figure 2.0-1 in the Z80 and Z80A Technical Manual shows an 8 bit data bus
and a 16 bit address bus. The 'registers' may be accessed as 8 bit
registers or as 16 bit register pairs. I guess that's what you mean by
'just sort of'.

Thanks for the clarification.

--
Alan Norton - Pecos SoftWareWorks
Review of Foxconn 975X7AB-8EKRS2H Mb, IT Articles
Vista EULA's explained, building your first computer - ABIT AN8 SLI
http://www.pecos-softwareworks.com/



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