SWTPC 6800

william degnan billdegnan at gmail.com
Tue Aug 16 22:28:55 CDT 2016

I don't believe anyone else has ever posted an SWTPC - specific monitor
script like I posted on my site designed for the specific purpose of
feeding monitor commands to load TSC BASIC via text file.  You just have to
follow my directions exactly.  Doing so will change swtpc monitor prompt to
a > prompt.  Essentially what my script does is load a papertape stripped
with only the raw data.  Try it.

On Aug 16, 2016 7:21 PM, "Brad H" <vintagecomputer at bettercomputing.net>
> Okay this is where I was getting a bit confused -- I had gotten the
impression that S1 records were essentially what was punched out on paper
tape and that on loading back in, the teletype/paper tape reader was simply
typing all this in as if someone was sitting there.  Looking at your TSC
Basic file I see it invokes the memory examine and change function with the
M and then starts at an address and just keeps going?
> So when you had a program saved to a tape, these would have been S1
records encoded in Kansas City format?
> Is there a large collection of these loader files somewhere?  Or like a
definitive list of major software developed for the 6800?
> I'm hoping to learn more on how to program these things -- I'm assuming
there was an assembler people used rather than just modifying memory
> Thanks
> Brad
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of william
> Sent: Tuesday, August 16, 2016 10:12 AM
> To: General Discussion: On-Topic and Off-Topic Posts <
cctalk at classiccmp.org>
> Subject: Re: SWTPC 6800
> Brad,
> You don't type in S1 records at the monitor prompt.  If anything you'd
want to download a text file that simulates monitor commands to load
memory,  but it's a lot slower.
> I haven't been reading all of the posts in this thread, but have you
tried following something like the instructions here to download a tape, I
have documented how to use a terminal to download TSC BASIC into an SWTPC
using a laptop serial port (or USB to Serial):
> http://vintagecomputer.net/browse_thread_record.cfm?id=416&tid=2
> b
> On Tue, Aug 16, 2016 at 12:55 PM, Brad H <
vintagecomputer at bettercomputing.net> wrote:
> > Thanks Brent.  So when I hit the end of an 'S' record line.. is it
> > just a Line Feed I need to go to the next?  Or just type the next S
> > record right in behind it?
> >
> > Also curious about how you type S records at the monitor prompt.  I'm
> > reading and trying to figure out how to do that.
> >
> > Many thanks!
> >
> > Brad
> >
> > -----Original Message-----
> > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brent
> > Hilpert
> > Sent: Tuesday, August 16, 2016 9:29 AM
> > To: General Discussion: On-Topic and Off-Topic Posts <
> > cctalk at classiccmp.org>
> > Subject: Re: SWTPC 6800
> >
> > Yes, the monitor just sees bytes coming at it, it can't distinguish
> > whether they're typed or coming from a host/machine,  as long as the
> > byte sequence accords with the Motorola S record format.
> >
> > You can formulate your own S records and type them at the monitor, too.
> >
> >
> >
> > On 2016-Aug-16, at 9:09 AM, Brad H wrote:
> >
> > > Another question if I may -- for a short TXT loader file.. could I
> > > manually enter the information contained therein with my terminal?
> > > I'm just thinking for a quick memory test, etc -- it'd be six of one
> > > half a dozen of the other in terms of time to hook up a PC terminal
> > > and
> > send the file..
> > >
> > > If I were to hit L to put the 6800 into load mode, could I then just
> > > type out the contents of the loader file with the CT1024's keyboard?
> >
> >

Bill Degnan
twitter: billdeg

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