CompuServe Messages

Griffith, The RKM, granted, is somewhat out of date (all three versions), but that info is readily available (at far less cost than a book), from Commodore, in the form of the 'Native Developers' package, for $20 for 4 (or 5) disks. These are complete autodocs, includes, fd files, etc. The kernel calls are most definitely not too slow for 19200 baud, though you will need more than a rudimentary understanding of the Amiga before you attempt something like that in a terminal program. (Hint: The text on your screen is nothing more than graphics, put there by the blitter, and if you are doing single character IO, the blitter setup time constitutes a large percentage of the total time taken to get the text there). As for interrupt driven, byte level IO to the 2090, well, I'm afraid that the 2090 will outrun any routine you might come up with to read/write, because it is a DMA device. I too thought at one time that the registers for the system calls were not documented. I was wrong. Check the autodocs in the RKM. Each call is documented in C terms, but does show the register usage. Y ..oops… slip of the finger… It will help a lot to know C if you expect to do any serious programming on the machine, even if it is in assembler, since much example code is in C. Don't feel bad though Griffith. Virtually all assmebly language programmers who have Amigas have had the same misconceptions regarding the documentation and the efficacy of the kernel routines. -larry