trying to design my first micro- looking for "prior art" (6100and6809)
ajp166 at bellatlantic.net
Fri Dec 2 23:35:13 CST 2005
>Subject: Re: trying to design my first micro- looking for "prior art" (6100and6809)
> From: woodelf <bfranchuk at jetnet.ab.ca>
> Date: Fri, 02 Dec 2005 22:11:11 -0700
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>>There are other CPUs like 8085, Z80 and relatives with sims around for them.
>>Never minding 6800 and 6502s. So its a matter of taste.
>The 6100 makes a nice basic PDP-8 but remember the 8 requires paper tape
>for the basic system.
And thats a problem because??? If your using a TTY then tape is already there.
Building a reader is trivial, I've done it. If you arr the kind that cant
well you still want the interface to match up as you use a PC as PT:. Most
will opt for the latter as there are a lot of "tapes" on line.
The biggest limitation with the 6100 is 4k of memory. I have an
Intersil Sampler and it's fun to use but 4KW is a big problem. Then
it's build an EMA (in ttl it's not bad) or find a 6101 MEDIC which has
the EMA in it.
>>In all cases having a sim for the target machine will make design work and
>>software more real and less dreaming.
>I find it the other way around, sims seem less real than hardware
>sitting on board even the design
>is never finished. A magnetic tape drive and old I/O does seem to feel
>like a massive computer
>even if todays equivelant fits on a stick of chewing gum.
Yes, but if your developing software a sim allows you to do that while waiting
for a part or whatever. I have the same general complaint as it's not real
hardware and I cant test my construction. Often I can test the logic or
develop test or driver programs.
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