SIMTEL (was Re: Source code for 805x line-by-line assembler?)

conjuring up a reasonably small and not too slow line-by-line assembler is not so trivial a process as translating code from one cpu to another, since the process is generally content-dependent. If I translate the MikBug-resident assembly code to 805x assembler, I'll have a cross-assembler, but still won't have what I want. The structure I've been after is more like the LILBUG, written for the 6801, or the BUFFALO, from the 68HC11, (one 'F' or two?) monitor from MOT, not that either of these is necessarily better than MIKBUG, but more that I simply know them and don't know the MIKBUG. The parser would probably be simpler, since the 805x instruction set involves mainly ADD, SUBB, ANL, ORL, shifts/rotates, and MOV instructions for anything hardware independent, with an additional character or the absence of one to define the addressing mode. Unlike the MOT processors, which have the destination inherent in the opcode, the 805x types habeI figured a table-lookup would provide a suitable approach, unless, and this is what I was hoping I'd encounter, someone has makes an already built version available. Naturally I can take a look at the code to see what can be gleaned from the techniques applied to the corresponding tasks there. One interesting debugger-related problem with the 805x and other architectures that don't allow writes to code space is how one would create an environment that permits setting breakpoints. Most of the debug environments I've seen do this by mapping the code and data space into a combined map, thereby allowing the two to reside in the same space, and, consequently, allowing code space to be written. Of course, it also allows a runaway program to corrupt code space ... <sigh> ... it seems there's always a "gotcha." I'm hoping to come up with an alternative to this, naturally, but I have to start somewhere, and that will require a line-by-line assembler, so one can use the mnemonics instead of having to learn the HEX codes for each instruction. Hopefully there's one already been done out there somewhere ... Dick ----- Original Message ----- From: "Douglas Quebbeman" &lt;dhquebbeman(a)theestopinalgroup.com&gt; To: &lt;classiccmp(a)classiccmp.org&gt; Sent: Saturday, March 23, 2002 10:44 AM Subject: RE: SIMTEL (was Re: Source code for 805x line-by-line assembler?) were