DOS ain't dead

MSA2 and TP7 overlays (Announce)

posted by Rugxulo , Usono, 02.12.2019, 20:47

> i modify MSA to have possibility compile overlays (something like
> dll: exe + symbol table) for DOS.

Apparently you use TP7 for that purpose, which I don't have. So I can't (easily) compile with "freeware" TP 5.5 because it lacks "pchar" (and other things). However, it does support overlays (but I'm not familiar with them at all!).

Anyways, actually I only wanted to mention this (N.B. the forum is getting confused with italics, so I renamed the var byte from "i" to "n"):

> CALLER.PAS
> procedure puts
> for n:=1 to ord(s[0]) do putc(s[n]);

I did put that one function in a separate file, just to prove a point. You can change "ord(s[0])" into "length(s)" (at least with TP 5.5), and the output .EXE has the exact same CRC32. My point is that it might be cleaner, clearer, and more portable to not assume the length is only a byte at offset 0. Compile-time calculations and constant expressions are useful indeed. Just FYI.

Complete thread:

• MSA assembler released under MIT - DosWorld, 10.11.2019, 13:44 (Announce)
  • MSA assembler released under MIT - tom, 10.11.2019, 19:00
    • MSA assembler released under MIT - DosWorld, 12.11.2019, 14:42
      • MSA assembler released under MIT - Rugxulo, 15.11.2019, 03:24
        • MSA assembler released under MIT - DosWorld, 15.11.2019, 16:38
      • MSA2 and TP7 overlays - Rugxulo, 02.12.2019, 20:47
        • MSA2 and TP7 overlays - marcov, 03.12.2019, 16:37
          • MSA2 and TP7 overlays - Rugxulo, 04.12.2019, 03:59
            • MSA2 and TP7 overlays - marcov, 04.12.2019, 10:41
              • Turbo Pascal overlays (overleden? ha!) - Rugxulo, 16.02.2020, 03:48
                • Turbo Pascal overlays - Rugxulo, 18.02.2020, 03:03
                • Turbo Pascal overlays & NASM Preprocessor - ecm, 05.03.2020, 16:42
        • MSA2 and TP7 overlays - rr, 03.12.2019, 21:34
        • MSA2 and TP7 overlays - Rugxulo, 14.12.2019, 13:28
          • MSA2 and TP7 overlays - rr, 14.12.2019, 23:42
            • MSA2 and TP7 overlays - marcov, 15.12.2019, 21:07
              • MSA2 and TP7 overlays - Rugxulo, 16.12.2019, 19:15
        • MSA2 and TP7 overlays - DosWorld, 15.12.2019, 21:42
          • MSA2 and one-pass assemblers - Rugxulo, 16.12.2019, 19:32
          • MSA2 compilation with GCC - Rugxulo, 12.02.2020, 08:18