MegaST 1.5

MegaST 1.5: Falcon EmuTOS with hard disks on SCSI, also on slow SD cards

Falcon030

• EmuTOS with "Hard disks on SCSI" now also works with slow SD cards (#34, upstream: emutos#81): the longer SCSI time limit of 1.4 (at least 1 second, 12.8 KB/s) was still too short on a tester's MEGA65, and installing Signum stopped again with "Your output device is not receiving data". The EmuTOS in the zip (atarist/tosfalc.img) now allows every SCSI transfer at least 10 seconds and 1.6 KB/s (tools/emutos_scsi_timeout.py). With it, @Joe3f00ff installed Signum from 3 disks on two SCSI disk images and copied a 3.6 MB folder across partitions and disks without an error. Copy the new tosfalc.img to your SD card.
• How fast the hard disks are: his stopwatch gives about 31 seconds for copying 1 MB (1 MB read and 1 MB written, about 33 KB/s each way), the same on SCSI, on IDE and with Atari TOS 4.04 and the ICD driver. The SD card path of the core sets the speed, not the driver. The IDE message reported with 1.4 came from a setup with "Hard disks on SCSI" on.

Updating

• Copy atarist/tosfalc.img from the zip. The settings files are unchanged: atarist/fccfg, atarist/fcmount and atarist/fcnvram of 1.1.6 to 1.4 stay valid. From a version older than 1.1.6, copy the new fccfg and fcmount from the zip.
• If you chose another TOS with "TOS:", select the "TOS:" line and press Space so the Falcon uses tosfalc.img again.
• Core files: MegaST-R6-v1.5.cor (R6) and MegaST-R3-v1.5.cor (R3 and R3A, ST only). The Falcon030 needs the R6. The cores only differ from 1.4 in the version number.

Files

MegaST-v1.5.zip: both core files, README.txt, atarist/ (EmuTOS for the ST and the Falcon, settings files, NVRAM) and extras/ (FASTRAM.PRG, falcon128.img).

Problems, ideas, things that work: issues.