CompuServe Thread

Alberto – The following information was given to me last Spring by a friend who works at Supra. The text is his, not mine. ——————————— AmigaDOS version and CPU (68000 or accelerated 68000/020/030/040) – vs – Amiga to modem baud rate (not modem to modem baud rate) 1.3 1.3 2.0 2.0 68000 accelerated 68000 accelerated —– ———– —– ———– 9600 19200 19200 38400+ (57600 may work, but hasn't been fully tested.) A non-accelerated Amiga running AmigaDOS 1.3 can usually run 19200 if the active screen only has a single bit-plane. Running programs in the background may cause problems if the program disables interrupts. (At 38400 baud turning off interrupts for 1/4 of a milli-second will cause data to be dropped.) Some hard disk interfaces can cause problems with high speed modems, it seems they disable interrupts long enough to drop a character. (NOTE: The Supra Series III SCSI driver code does not have this problem.) Some really slow hard disks (ie. the really cheap Seagates) may also cause problems, when used with some hard disk interfaces. We are still looking into modem problems caused by hard disks and SCSI controllers, there isn't a list of what works and what doesn't. ———————————— Note: For you purposes I believe that AmigaDOS v1.2 is the same as v1.3. My understanding is that the only difference between v1.2 and 1.3 is that 1.3 could auto-boot on a hard drive. I am running AmigaDOS v2.04 and have a SupraFAXmodem v.32bis, which works flawlessly. I can comment that communication will be slower if you are running anything else in the background that use much CPU. [ MORE ]