Hi Stephen, Sorry to use your Fig Forth thread - I too have a Corsham 6809 system, with a SD card - I can not for the life of me figure out what files / how to put stuff onto the SD card to boot - either Basic or Flex/09.
If you had success down the Fig route that would also be great - but do you remember how to use the SD system? Kindest regards, Doug Jackson em: d...@doughq.com ph: 0414 986878 Follow my amateur radio adventures at vk1zdj.net On Sun, 24 Jun 2018 at 05:16, Stephen Pereira via cctech < cct...@classiccmp.org> wrote: > Hi folks, > > I know there's not much 6800 activity here, but I figure this would be > worth a try. > > Has anyone here ever seen or ever had fig-FORTH for the 6800 working? > > I have a SWTPC replica system from Bob Applegate / Corsham Technologies, > and I love it. It came with a complete 64K RAM, as well as the SWIBUG > monitor, and the monitor code has been extended by Bob/Corsham to interface > with an SD Card sub-system for floppy disk emulation. This provides the > original terminal access to the machine with the simple system monitor, and > also the FLEX OS for running programs. It is a blast to use. > > Recently, I took a look around and found the fig-FORTH listing as > originally published back in 1979, and also a Source Forge site that holds > an electronic copy: > > https://sourceforge.net/projects/asm...th_6800-stuff/ < > https://sourceforge.net/projects/asm68c/files/fig-forth_6800-stuff/> > > I've managed to get the source code to assemble with a cross-assembler > supplied by Bob/Corsham. It does not produce an exact copy of the original > code, because the code uses the JMP instruction pretty much exclusively, > and the assembler substitutes a relative BRA instruction sometimes. So my > code ends up being several bytes shorter because of saving one byte each > time a JMP is replaced by a BRA. That said, it appears to me that the code > matches up with the original listing otherwise. > > So my problem is this: When I run the code on my system, fig-FORTH seems > to sign on, and will accept input from the keyboard (double echos of each > key typed) but it then does not proceed to interpret the command entered. > The interesting thing I see by winding my way around in the code is that it > has already properly performed a bunch of setup and produces the initial > "Forth-68" sign on, and that has required it to already be using many of > the Forth commands that were defined by machine language. This indicates to > me that some of the command interpretation is working. The I/O from/to the > terminal is by calls to the system monitor I/O routines, and that seems to > be also working, despite the double echos of the typed characters. It just > does not proceed to interpret what is typed in at all. > > Of course, I have no idea if this code ever worked properly, or if I am > encountering early buggy code. So I'm looking to see if anyone else has > ever seen the fig-FORTH working on a 6800 system? Any pointers to good > working code? > > Thanks for listening! > > smp > - - - > Stephen Pereira > Bedford, NH 03110 > KB1SXE > > >
