vintagecomputer at bettercomputing.net
Tue Aug 16 18:20:08 CDT 2016
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 addresses?
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of william degnan
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
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):
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!
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brent
> 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?
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